HVACR Videos Q and A livestream originally aired 12/16/19 @ 5:PM (west coast time) where we will discuss my most recent uploads and answer questions from the Chat, YouTube comments, and email’s.
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NEW YOUTUBE HVACR TOOLS CHANNEL LINK https://www.youtube.com/channel/UCO-nk0rPOkp_tCS5diKpa-Q/
Affiliate Links
Commercial Refrigeration book link https://amzn.to/2YF4jU1
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To support my channel please visit
Support the stream: https://streamlabs.com/hvacrvideos
and or my Patreon page here https://www.patreon.com/Hvacrvideos
For Optimizing my videos I use Tube Buddy
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Please consider subscribing to my channel and turning on the notification bell by clicking this link https://goo.gl/H4Nvob
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For any inquiries please contact me at hvacrvideos @gmail.com
Mailing Address
HVACR VIDEOS
12523 LIMONITE AVE.
#440 - 184
MIRA LOMA, CA. 91752
Intro Music : Pilots Of Stone by Audionautix is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/...)
Artist: http://audionautix.com/
Ah, it's time to chill out and get ready for a mediocre. Qa live stream if you're old enough grab yourself your favorite adult beverage and if you're not stick with apple juice, put your feet up and relax. If you have any questions, feel free to ask them in the chat and now, let's queue up the intro music, hey everybody. How are you guys doing this evening? I bet you that I find myself crit critiquing myself and I say like the same thing, every single time.
I start the day, everybody it's kind of like a mr. Rogers or something like the same thing every single time, except for I'm not a creeper. But I guess you guys don't know that but anyways. How are you guys doing? Hopefully you guys are all doing well, it's pretty cold out here in California, man.
I you know. I almost didn't want to go to work today. Cuz it was like 35 degrees. So you know, I feel bad for you guys to have to work in colder weather than that, but I'm joking, but I mean you know we really don't know what cold is here in Southern California.
You know it's uh, it's very interesting, our normal temperatures. Today I was working in an extreme area where it was like 35 degrees, but normally like down at my house. It was in the 50s, so it's kind of funny how we we and moan about the weather, but you guys in the Midwest and the north and back east. You know you guys are freezing and we're over here in our 50 60 degree, weather so kind of funny, but hello to everybody that is in here.
I see a lot of people saying: hey how's it going. Do me a favor, as Justin has already said. I'm sure, but let's uh, let's put your guys's questions and capslock okay. As usual, I got a bunch of stuff.
I want to talk about and I'll try to get to your guys's stuff. If I don't answer your question feel free to put it in the chat again, you guys aren't gon na piss this off just keep putting it. In till I either say I'm not gon na answer it or someone else tells you. You know the moderators tell you that we're not gon na get to that question or something so we'll definitely try to get to them.
Also, I just want to start out by saying thank you so very much for coming into the streams, as you guys usually do a lot of you guys a regular. Some of you guys are new guys for the new guys. You know I do these streams to answer the questions that I get when I upload my videos so we'll try to yeah. I couldn't imagine that Ike nope nope, I mean.
I know what 19 degrees feels like, but I mean still sucks, but anyways yeah, exactly mayhem. Refrigeration, yeah I'm a little ways away from the yucca but yeah it was pretty. I was up in Victorville today, which is kind of a ways away from Yucca Valley, but it's in the high desert kind of like Yucca Valley, so yeah I was pretty cold they're. So anyways released two videos this last week I actually was on on track and actually got two videos out like normal.
The first one was a the front. Doors are too hard to open. It was an air balance call that was a very interesting one, because I wasn't able to address the problems head-on. I wasn't able to fix what I wanted to fix: okay because of some budget reasons and stuff like that, but I had to get the restaurant operational in order to get the restaurant operational, I had to adjust some outside air dampers on some air conditioning units and Then also dues, just some general PM work, okay, because this particular customer had paused their preventative maintenance for a little while and they're gon na be starting him up soon from my understanding. But of course we got a service call that the customers coming into the restaurant. Couldn't open up the doors, they had a negative air pressure on that building? Okay, so that meant that the exhaust fans were pulling too much air and we weren't putting enough make-up air back into the building. I've explained air balance a million times, but it made for a crazy negative air pressure in that building and it was actually to the point - and I do believe I didn't do these calculations myself. But someone had commented on one of my videos and I believe that they said that from the the pressure reading the negative air pressure.
Reading that I had, they were like estimating that there was thirty seven pounds of force pulling those doors shut, and I do believe that that kind of sounds accurate. Again I didn't do those numbers, someone had done them for me. I don't know how they did those numbers, because I'm not that smart but hey, but you know 37 pounds of force that seemed about right, because I almost had I went to go open the building door at first and I couldn't open it. Then I had to lean back and put my weight into it and then the door opened and then whoosh she got that rush of air.
You know so it was a trip, but so in that situation we had exhaust fans that had loose belts. I tightened all those up then the balance got worse. Then we had a make upper unit that wasn't working properly. I had to make a temporary adjustment to that, but I couldn't tighten the belt up a hundred percent because the the bearing and the motors going bad and when I tightened up the belt it started making this god-awful ticking sound that I was worried about.
So I went ahead and loosen the belt up, but I had to compensate for the makeup with the outside air dampers on the air-conditioning units plus the outside air dampers, where most of them were all disconnected, so we weren't pulling any fresh air through there. So this leads to a whole list of questions you know and in a whole different group of things. Okay, so why, in the first place where all the the economizers disconnected or the outside air dampers? Well, you know here I mean it pretty. Much is the same everywhere, but here in Southern California we have economizers and it's actually code that we install economizers on units that are like five tons and bigger, I think, or 2000 CFM s or more airflow, 2,000 CFM's or more of airflow. I believe we have to have an economize around the unit now, but a lot of times. Customers don't want to fix the economizers, because the return on investment isn't really there. They don't see it alright, because we, you know, we do use the economizers, but at the same time they're pretty expensive to fix, especially when they're really old ones, so a lot of the times the customers they don't want to fix them. So when you have an air conditioner, that's not working, they just want you to disconnect them.
I hate doing that, but you know I've had to do it too, because sometimes customers don't want to don't want to pony up to fix the economizer so I'll, replace them. Okay, so in my situation I had multiple economizers that weren't working, so what I did was I manually opened up the dampers just to bring in fresh air to temporarily balance out the building. Mind you up temporary okay, because I can't let it stay like that and in fact, they're gon na probably complain about some cold dining rooms. Now, because or they're gon na complain that their gas bill is gon na go up, because I opened up some of those economizers, probably thirty, forty percent to balance out the building.
Well now we're gon na be bringing in all that cold air and the heaters are gon na, be running like crazy to try to compensate for all that cold air. So you know there's a give-and-take from everything. So it is a temporary situation, because once this - and this customer is good about fixing things it's just, they got to play with the numbers. There are corporations, so you know when they do.
You know start spending again, then I'm gon na put in some quotes and we're gon na go in there and fix that make up air unit and then we'll go down and throttle almost all those ACS down and just pull like fifteen percent or ten percent outside Air through each one of those ACS, you know and we'll pull the majority of it through that make up air unit, but sometimes you got to go in there and just kind of do what you got to do to get them operational. You know because they, basically I I could imagine if there was 37 pounds of force again I didn't do that number. That was what someone else did, but if there was 37 pounds of force how many people came up to their building and walked away because they couldn't get the door open old people. You know that was a trip.
So I see a question right now and I'm gon na answer. It uh I Simon games. You said what was my worst experience with phosgene gas well, first off the technical term, phosgene gas, I'm not super smart, but I believe it only occurs with chlorinated refrigerants. I think so I believe that there's a there's another term for the the toxic chemical that comes from the flame, touching other gases too, but I have had situations with phosgene gas. I was working in a restaurant one time, and this was let's, let's preface this. This was pre-1991 and this was a long time ago before EPA laws, or you know the the Montreal Protocol. Whatever that fancy, you know whatever, when you could still legally vent refrigerants. Okay, you get what I'm saying there.
This was a long time ago. This actually was when I was coming up in the trade, and I didn't know any better, all right. I know better. Now you don't invent refrigerants, but again this was pretty nineteen.
Whatever the year was that you could invent refrigerants. Okay and let's just for to make this safe, it wasn't me this was a story. I heard about someone else that was venting some refrigerant, while they were working on an ice machine and that person happened to be standing on top of a six-foot ladder and when that person was doing that certain thing again, not me some other dude alright and he Shouldn't have been doing this when that person was doing that that venting of the refrigerant that person was venting it in the restaurant and as he was coming down from the ladder. He started to notice that all the cooks in that restaurant were coughing and choking and that person was way up a high on that ladder.
Well, that refrigerant fell to the bottom of the kitchen and it made its way over to a flame, and then it created a phosgene gas, and that was not a good situation. Okay again, that was a story I heard about some other technician and yeah. The person that was standing up on the ladder was above the toxic gas. So as they came down that person started, coughing ran over opened up all the doors and cleaned the kitchen out.
You know and kind of vented it or you know, cleared the air that way people could breathe, but that was a dangerous situation that I had heard about. So there's there's been other times too, where I've been working on a walk-in cooler fixing a leak, and sometimes you have trapped refrigerant in the oil on a pump down system or in other situations. You have yeah, I just pretty much trapped oil in the refrigerant and as you're, trying to braise a leak or something like that. You could be in the walk-in cooler and a lot of times when you're in it.
You don't realize what's going on, if you have the doors shut around you, so you need to be very careful about asphyxiation because you could be in a walk-in working and having toxic chemicals that are a result of your torch, hitting that refrigerant and creating toxic gases And you could be breathing that in and if you ever get that stuff in your lungs, it really doesn't feel good for the next three days. It really hurts the bottom of your lungs because it sits in there and then you start choking it up. It's not good, so you got to be very, very careful about that and again you know you that's why again, I've learned a lot since I was a brand new technician and I've learned that you know you want to be purging with nitrogen when you're brazing and Different things like that, because it helps to reduce some of these things, but it also is difficult to purge with nitrogen or braise with nitrogen. When you have a pump down system, it can be very difficult to properly purge the refrigerant through the system. When you have a pump down system so sometimes it may be a better situation to go ahead and recover all the gas. So, let's see what else do I got going on in here um? Let me see alright, I'm gon na go ahead and get to some more of my topics here: okay, so the next video that I did so I talked about the air balance. Oh and I wanted to cover something too. So the the title of that video was the front doors are too hard to open.
Now someone that was not in the trade, I believe they don't think they were in the trade, but they had commented about how damaged the Polli was and how it got stuck inside that belt. You got to be very careful about that. Okay, when pulleys get worn out or sheaves, the belts can get stuck inside of them and you can actually, you should be able to diagnose it by looking at the wear pattern on the belt Joe. Thank you very much man.
I really really appreciate it, so that was an awesome super chat, Joe thanks. Do me a favor guys hit the like button. I'd really really appreciate it. Okay, so one of the things that happens, though, is if you have a loose belt on an exhaust fan on an air conditioning unit on a make up.
Air unit. Loose belts are one of the biggest things that destroy pulleys. If you have a loose belt that rides inside that pulley for a very long time, it'll actually help to wear it down even faster. So that's why proper preventative maintenance is very, very important.
So in the last week, I've gone to multiple restaurants and I've had to change pulleys like crazy belts like crazy, and it's all been because people weren't doing proper preventative maintenance as maintaining the equipment and stuff gets worn out even faster when they don't maintain it. You and I both know that in a perfect world, everybody will maintain their equipment, and I mean you know, and the stuff will last for a very long time and have minimal downtime and minimal repairs. But you know one of the cool things about being an HVAC technician is there's typically no shortage of work because a lot of times people don't understand that you need to maintain their equipment. They seem to think that if you just stop a preventative maintenance for a couple months that it's gon na save them money when in the long run, it's gon na cost them more money.
But sometimes it might just shift some numbers around and push that expenditure into a new quarter which to a corporation is you know the biggest deal in the world because sometimes they just got to move numbers around to make shareholders happy so anyways we're going on a Financial thing, so all right, Matt Dillon, would I recommend a Goodman rtu unit. Okay, first off Goodman has a black eye in the industry because a lot of people don't like their products. First off I will say most air conditioners will work and they will work properly. If they are properly installed with proper ductwork, hey Chad, thank you very much for that super chat dude. That was awesome thanks so much. But so you know again. Goodman has a black eye and I'm not gon na, say the best air conditioning unit. I've pulled my hair out and been pissed off at Goodman units plenty of times before they are low-cost, but guess what Nathan? Thank you very much.
I dude you guys are awesome man. Thank you. Thank you. Yeah.
The stream things you guys are freaking amazing man, holy moly um, losing my train of thought. Thank you. So very much man, you guys are awesome. Iiii, don't even know what to say.
Thanks all right. I lost my train of thought there, but um. What was I talking about? That's funny uh. I lost my train of thought.
I guess I'll get back to it here in a few minutes. Okay, next question: I see how long have I been doing the job of dealing with HVAC? Do I do anything else before HVAC Samuel, Joe dude? Thank you man, so before air conditioning and refrigeration, I honestly grew up in HVAC I worked for my father growing up in the trade and for a brief time in my junior year of high school, I worked at a body shop and then the tail end of My senior year of high school, I worked at a body shop working on cars because I had an auto collision class in high school. These super chat's guys you guys are freaking awesome. So for a brief stint, I wasn't doing HVAC, but I honestly grew up from.
I mean as young as being in elementary school. I was sitting on my dad's bucket holding this flashlight for him now I may not maybe didn't understand the trade, but you know I grew up with it. It's in my blood. It always has been so all right.
Mayhem, I'm gon na answer this question for you good, you said: can I explain how I wired the key to therm 10 plus defrost? Typically, you just see the two wires going to the solenoid just curious, where you're pulling that third wire from thinks okay mayhem. So here's the deal in that particular situation and that was on my locking cooler, callback, video, where I wired in a key to therm, temp Plus defrost controller, and what I did Nathan dude. Thank you very much man, you're awesome. What I did was there was a hundred and fifteen volt circuit coming from a switch, so a power and a neutral wire going to the solenoid valve.
But then the power wire wasn't going. It wasn't connected to anything in the solenoid valve. The power wire was just running through the cylinder marks. Okay, we called it a junction box and it was running to the old thermostat. The old thermostat was a mechanical thermostat, so what I did was I grabbed that neutral wire or that ya the neutral wire from the solenoid valve coil, and I ran it over to the new digital thermostat. Then I took the power wire from the that was not hooked up to anything yet and I ran it in so now I had a powered thermostat, so I had power and neutral going to the thermostat and running the new one. All the time, then, I took a jumper wire off of that power wire and ran it to the common terminal within the thermostat and then out of the normally open terminal. I went back to the solenoid valve, so I know that probably didn't make sense to you, because this probably doesn't translate too much on a live stream.
But I just kind of made my own junction box using the solenoid valve coil and the thermostat okay dude. You guys are these super chats man, you guys, are awesome. Okay, all right, happy Monday! Thank you, seven, one, six appliance guy! All right! I'm gon na go ahead and get back to my list right here. So my next service - video - that I did I kinda already talked about it - was the walk-in cooler callback.
So I wanted to talk about that one. It was a little clickbait because it wasn't a callback, but I thought it was a callback and I got to tell you when I got that service called my butt puckered okay, because they called me. It's been two weeks or something like that, since I did the new line set replacement and that was where I did the line set replacement. It's been a couple weeks and then I get a service call saying: they're walking coolers at 50 degrees and I'm thinking.
Oh no there's a refrigerant leak, I'm sweating balls as I'm driving to that restaurant I was that was the most excited. I've ever been to see an ice step, evaporator coil the moment, and I grabbed and here's how I approached it. Okay, first off, even though I again you guys the super chats. Thank you so very much, even though my screen is going crazy, but yeah you guys are awesome.
Okay, so the moment that I walked in the restaurant, even though I thought it was a callback, even though the manager thought it was a callback to I immediately walked in and I treated him just like a normal person. I shook his hand. I asked him how he's doing asked him what was going on quizzed him and then I said, have you seen anything funny with the walk-in cooler and I said why don't you walk in there with me and the manager walked into the walk-in cooler with me and We both looked at the evaporator coil, and I saw that was frozen, solid and I said ah okay, and then I explained him. Alright, the only thing that would have been a callback was if the unit was low on refrigerant, and I said the fact that it's iced up top to bottom front to back more than likely indicates that it's not a callback.
But I said I'm still gon na go through it and I will be totally honest with you. If it is something that I did, I will take okay, my customers for the most part, I like to think that they trust me because I'm honest with them - and I I'm very upfront if I make a mistake, I pointed out, you know so it ended up. Not being a callback, the unit was iced up because the door wasn't closing, which is something that I've already told them about, so it just led from one thing to another. Okay, so I went ahead and installed a new thermostat. The thermostat itself wasn't bad, but the defrost clock was, but instead of putting a 200-dollar defrost clock on there. I put a two hundred and something dollar kita therm, temp, Plus defrost controller that had a new temp control and a defrost clock built into it. And then I relocated the sensor to a better location, to try to prevent the freeze ups as much as they were have, or you know often basically, and then I went ahead and talked to their facilities department and we already ordered a new door for that box. So we're gon na put a replacement bolt on door and get rid of that date.
We call them dairy doors, but that swinging door they're gon na that's gon na go away and they're. Just gon na have a standard, one-way, open door, so that'll be coming soon too. Usually I don't do the installs of the doors. Usually I have another guy doing because they're just tedious, time-consuming things but we'll see.
If I can't do one of these I've got a couple of those door installs coming up for a couple, different boxes, and maybe I can show one they're really not that difficult. It just takes time. So all right, let's see what else you guys I'll try to get to your guys's questions. If I, if I missed anything, throw a question in here again and I'll try to get to it, okay remember try to put your questions in caps lock.
So all right, let me see, do you make ok Lorenzo Clint? Thank you very much for that super chat. You guys are freaking awesome with these super chats. Thank you guys. So very much.
Okay! So do I make more or do the question is? Do you make more money as an installer or a technician Lorenzo? It really depends. I mean it really depends. You can make very good money as an installer, especially if you're a good installer. Now, I would say you know if you're going to the residential side - and I can't completely speak for the residential side - okay, but for the most part, if you're doing residential, if you're a service tech, you probably have a potential to make a commission.
So I guess there's the chance that you could make more if you're a service tech on the residential side, but you know I would imagine, on the commercial side you know good installers can probably make decent bucks. So I wouldn't say that either is better or worse. I actually heard someone talking today. I was listening to a podcast on the HVAC school I was with Brian or, and I can't pronounce his last name. It was a teacher. His name is Ty and I cannot think of his last name right now. I'm sorry dude he's a teacher in Las Vegas at nti. I believe anyways.
I was listening to a podcast between them too, and the the gas ty had said something really cool on brian's podcast. He said you know when people ask him which one's better installer a service technician. You know I'm paraphrasing what he said, but basically he said: there's not one. That's better! There's one! That's better for you and there's one that's better for someone else.
It's not that one's better than the other, because not everybody's made out to be an installer or a service tech, so someone may excel at doing installation and not so much dealing with customers and being a service tech, okay! So then, theoretically, that's a better job! For that person, so I wouldn't say that you can make more from either one it's hard to say I mean what makes you happy. You shouldn't be doing something that you don't like. So again, I'm going off on a tangent like I usually do and going way away from the question, but sorry about that, but all right, let's see what else yeah there are multiple facets. As twisdom says, right, there multiple facets to this trade and guys the sky is the limit.
You can do so much in this trade. Do you want to do super technological, scientific, refrigeration, working on crazy stuff? With weird blends, you can do it. You make really good money, you can work in restaurants like I do you can work in industrial. You can work in residential there's, nothing wrong with either one of them.
Just some of them are better for other people than they are for the you know. Then another person, basically so there's so many different facets of this trade and you you could literally work all over the world. You can work in a submarine. You can work, you know in Alaska, you could work all over the place.
So that's one really cool thing about this trade and guess what? If you learn this trade for the new guys that are watching this? If you excel in this trade, you will have plumbing skills, you will have electrician skills. You will have really good mathematical skills. You will have be an HVAC tech. You will be able to troubleshoot, you will have general construction skills, I mean you have to know so much to be an HVAC technician, but it is a very rewarding career.
All right now, there's some places, sometimes where some guys are bitter and miserable, but you can't just look at everybody, that's bitter and miserable and assume this is a horrible trade, because this job is what you make it: it's what you get for a give to it And it's what you take from it. Some people are afraid to move on from a situation. That's crappy so therefore they're bitter the entire time all right, but I'm not saying that people should just move on, but I mean you got to do what's best for you and your own okay. So let's see what else? Okay, Alexander, you said once you go through school, how would you get a job? If there's no companies near you well, first off you want to talk to the school all right. It really depends on where you live, but the HVAC trade I mean it pretty much happens everywhere. There's got to be some sort of a company near you, I mean you may have to drive a little bit, but you should be able to find some work. One way or the other you just got to get through school and the school should be able to help you with ideas to you know, look on, you know who advertises to fix the air conditioners in your area I mean looking who's fixing the air conditioners drive Around the neighborhood and look and see who what service companies are out there and you'll find out lots of information. So there's got to be a company around you make as much as you're willing to learn.
That's exactly correct all right, so I'm gon na go and get to some of my questions here. Okay, oh wait! Chad, you said: if I install a ketta therm, do you cancel out the defrost timer on the roof and the condenser? Yes, I did Chad and that's the reason why I installed a ketta therm was I went ahead and pulled all the pins out of the defrost clock. I was a little bit lazy and didn't unwire the defrost clock, which I probably should have done because that way nothing shorts out inside the clock, but yeah yeah. I am eliminated the defrost pins in the clock and then now I'm just using the the thermostat downstairs and I was able to control the solenoid valve directly with the thermostat now so that's perfect, that's the best kind of a defrost.
You can do the old school. The way that it was before was just an off cycle defrost, where it shut off the compressor. It had nothing to do with solenoid valve. So this is actually better that way, it actually closes a solenoid valve when it's in defrost.
So you don't have the potential of refrigerant migration, so it's it's much better. This way, all right. When will the HV a tool, HVAC tools, videos be posted, I'm looking at. Basically, my plan is to have my first or second video by the first of the year.
Is the plan so a couple weeks? I have the topics. I have the tools, I've been using them for a long time. I just need to sit down and make the videos, so my plan is somewhere around the first of the year to post the first videos on that channel. So that's the goal.
Have I ever gotten customers from my videos? No, I've had people email me and ask me, but I have not accepted any customers from the videos. Yet I've had maybe two potential ones, but I'll be honest with you right now, I'm so busy and it's hard for me to take on work right now. So I would love to take on more work, but I just haven't been able to we'll see as this fall or this spring comes, we'll see how it goes, maybe I'll, maybe I'll be able to take on another customer. It just depends on my workforce that I have working with me so manually control the defrost with the magnet. I guess you could do that too, with a solenoid magnet for sure. Alright, alright, let me go ahead and get to my list right here guys. I want to remind you guys something right now, as we come into the season not come in we're in the middle of the winter, we're in the middle of the heating season, guys recommend to your customers and make sure that you guys are doing the same thing Too, I can't stress enough how important carbon monoxide detectors are guys, if you guys, especially you guys that are working in the really cold climates I mean it can happen out here on the west coast, to where we have moderate temperatures, but carry your personal carbon monoxide. Detector with you I'm guilty of not carrying a personal CO detector, and I really should they're simple: you can buy one.
You can hang it on your key. You can hang it on your belt loop and just keep it on your person when you're walking around that way. You don't walk into a bad situation. Okay, I'm segwaying into, and also recommend that your customers upsell them guys write the residential guys.
There is nothing wrong with upselling carbon monoxide detectors. Okay, I don't like the word upsell, but I mean guys you're doing them a service right and you're protecting your own. Your put your you're looking out for them by talking them into carbon monoxide detectors, even if they go buy them themselves. Okay, if you're there doing a service call sell them new batteries, replace them.
I don't care when the batteries are replaced. Last just say: hey, you know what why don't you? Let me change those batteries on that carbon monoxide detector just to be safe, okay, guys and also pay attention to I'm, not a genius when it comes to carbon monoxide detectors. But I do know - and I have a lot of documentation that say majority of the carbon monoxide detectors that you buy at the big-box stores. They basically don't detect low levels of carbon monoxide, so they only detect like the the maximum thresholds.
So, theoretically, someone could be sitting in their house breathing in carbon monoxide and not even know it, because the the levels aren't high enough to set off their detector. So I'm sure again, I don't know the names of the brands, but I'm sure there's better carbon monoxide detectors out there that have lower level readings, suggest those one selim talk to your company. Talk to your customers recommend the ones to buy, protect them, protect yourselves and carry the personal ones with you, okay and, like I said, I'm guilty of not carrying a personal one. I have a handheld carbon monoxide detector, but um.
I I've taken it in and I actually have a video that I'm gon na I'm gon na tell you guys to look for and I'm gon na link it in here. Do me a favor just copy the link and watch it after the show. Let me see where's my video and I have a link right here, so I had a video where I had a service called potential carbon monoxide problem. I'm gon na bow Scott dude. You are awesome. Thank you very much. That is an awesome super chat. Man dude.
Thank you very much all right, so I made a video about a year ago or some change or something like that where I had high carbon monoxide levels and it was because of a negative air balance guys I had an I had a mechanical room that was Within the building envelope, we had a massive negative air pressure and we were pulling the flue gasses out of the the the the mechanical room right into the building and flooding the building with carbon monoxide. Luckily, nobody got hurt and because I would potential day the customer actually called me and said the gas company came out. I'm surprised the gas company didn't red-tagged the building and shut it down, but all they did was open up the roof, hatch and open up the back door and told him to call me so I walked in with a carbon monoxide detector. If you guys watched that video you'll see the levels it's going off the chart, and it was because they had a massive negative air pressure on that building and was pulling the flue gasses out of the the flue pipe and bringing them into the building.
Basically, so carbon monoxide detectors are a must, let me see, did anybody again? Thank you very much for that super chat, Scott. That was awesome. Dude. Did anybody get the there you go, twisdom went out the carbon monoxide levels right there.
So did anybody get the movie quote yet? Did it post it? Yet I don't know if I did or not. I always miss those things if they do all right um. So let me see what I got next on my list right here. Oh so in the walk-in cooler, video right one of the things I want to point out - and this is gon na segue into the next topic - okay, yeah - that would be share this video guys.
That would be awesome if you guys can get the numbers up to 300 people. That would be cool alright. So, in the the video where I had, the walk-in cooler call back right, it was a fake call back. I pointed something out when I was hosing the evaporator and defrost in it.
I'm always pointing out that I'm trying to think of the customers best interests. Okay - and I noticed that the delivery guy had brought the food into that walk-in and they said it directly on the floor. Yes, that's an inconvenience. Yes, it's not my problem, but as I was defrosting it I'm watching the water and I'm worried about those boxes getting wet.
Thank You Ike. I really appreciate it, but so I was worrying about the boxes getting wet to the point that I went and grabbed them and I stopped what I was doing. I went and grabbed the manager, and I said, hey bud, can you please have them move those boxes, because I don't want them to get wet, Midtown refrigeration. Thank you very much for that super chat. Dude. You are awesome. Thank you very much. So it's things like that that really build the trust with the customer Joe you're awesome, but is by you know, looking at the big picture and trying to think for the customer right and trying to look out for their products to try to make sure that the Boxes that they had said on the floor aren't gon na get wet from all the water.
It's the little things like that that I bring to the customers attention. Okay, so you know big-picture diagnosis. Now, when I say big-picture diagnosis, there's another really good thing that I someone asked me a great question: okay, and I got it written right here - let's see who was it that did it at that? Try to see who asked this! Okay, Jason Jason had asked me how far is too far with a big-picture diagnosis and that's a great question, because that does take a decision on your part. I could be there for days going through the unit.
You know I found a leak, but I need to look for another one. I found an electrical short. I need to look for another one, this motors, making a noise, this blades dirty this door is not working. You could just I mean Pandora's box right, so there is a point when it's too far right.
So I do look at the big picture and I try to put the customer in the decision-making process and try to say: okay, here's what I found. This is what I'm doing Jeff you're awesome bud. Thank you very much for that super chat. So I try to go to the customer and I try to say: okay, here's what I found you know and I try to ask them.
Do you want me to keep going? These are the big problems. I think we nicked it here, but there's some other minor stuff. Do you want me to keep going and I keep the customer in the loop at the same time to my situation? I'm an owner, but I look at you know: if you're working for someone you've got to call your supervisor, you got to call your boss and say: hey bud. Here's what I found this is what I did.
This is what the customer wants me to do. How much more time do I have how much further do you want me to go? You need to get your service manager, your boss, your owner, your office involved, and let them know, ask them: let them make those decisions. Okay, you know what that's about it and then you leave a blanket disclaimer on the invoice that hey. I fix these problems, but you know we got some other issues that I'd love to look into.
You guys should call us back and have us diet under that at a later time. Okay, so there is, there is a point at which you go too far with the big picture diagnosis, but you definitely want to keep your boss involved. Keep the customer involved and know when to stop here's how I operate at my company when my service techs go out to a job. I want to hear from them.
Basically, every 45 minutes. That's what I want them to do. I want them to call me every every 45 minutes. Let me know hey. This is what I found. This is where we're going just so we have an idea, okay and then they could say hey. You know what this is. What I found the units are all dirty.
It's gon na take me a couple hours to clean them. Then they don't need to call me back in 45 minutes, but I need to know what's going on so that way I can decide whether or not I need to send someone else or just let them be okay. Now, I'm not saying that my guys have to call me every 45 minutes when they're doing a preventative maintenance or something like that or or they're cleaning all the ACS. But I mean I just need to keep them in the loop and I suggest you guys do the same things with your companies to just keep someone in the loop.
Just let them know hey. I got here this units all iced up, it's gon na. Take me a couple hours to defrost: it boom you're good checking in a couple hours all right, just communicate. Communication is the biggest thing you can do when it comes to this trade and your company.
That will send you, the extra mile that will earn you extra money that will do everything for you. That will build your confidence or the company's confidence in you is just communication same thing with the customer too. Okay, all right, let's get to some more questions. All right, let me see I see that Ralph's in here my buddy Ralph is in here guys and I always give Ralph a plug, because Ralph is always willing to help everybody out.
Ralph works for Honeywell refrigerants and he's always willing to answer questions from when it comes to refrigerant, conversions and different things like that. If you're, trying to convert to r22 are from r22 refrigerant over to new ones or if you're dealing with the new laws that are coming into effect, where they're phasing out different refrigerants Ralph's the man to get ahold of, he knows the regulations and in fact, I'm Gon na be it's something: we're gon na work on for the new year and I've already communicated with Ralph and we're gon na get someone from from Honeywell and we're gon na have a conversation, hopefully, where we work, something out where they update us on the new Laws and new restrictions that are changing come the first of the year for a lot of different areas, so I'm gon na post, Ralph's email in here right now, if you guys have any questions, feel free to hit Ralph up, he's, always willing to help you guys Out, okay, all right, so a great question that I had was when I'm working in the condensers in the restaurants. What do I use to clean the greasy condensers and what do I use to keep the grease off the condenser? So, first and foremost, you've got to understand the requirements of the manufacturer of that particular refrigerator. Okay, what I highly suggest is make sure that they're - okay with this, but usually I will use a hammock style, filter media. Okay, it comes in a hammock roll. It's like blue fiberglass. You cut it to a 12 by 12 inch piece. You use a couple plastic straws.
You fold them in half. You push them into the condenser coil. You keep a filter on that condenser. But I we'll say one of the most important things.
If they don't do a regular preventative maintenance - and you put a filter on that condenser - that filter will plug up faster than the condenser coil if it had no filter at all. So keep that in mind, you don't want to piss off the customer when you go over there to do a main or to do a repair, and they don't do normal maintenance and you put a filter on there. Leave it up to them, keep them in the loop okay, because sometimes customers just like to let their condensers get dirty. So once you put a filter depending if it's a really greasy restaurant, that filter won't last a month, sometimes less than a month.
So if they don't do a monthly maintenance, you got to make the decision what's better. What do they want, because they're gon na be calling you back and you're gon na be pulling a filter off and putting a new one on that's great, but again keep the customer in the loop? Okay when it comes to the greasy condensers? What I like to use is my preferred: cleaner is the Viper HD by refrigeration technologies. It's a it's, a safe, cleaner, that's, not corrosive, and it's not gon na eat everything up. It does a good job of cleaning condenser coils.
Now, if you have a severely impacted condenser coil, what I'd highly suggest is the Viper Brite cleaner, it's very similar to the new Calgon blue, cleaner, but the Viper HD is a safe one. That's not corrosive the bright cleaner. That stuff will. My understanding is.
Is that stuff will eat stuff up? It's just like the new Calgon prefer not to use that stuff, because it really does a lot of damage. If you can use the Viper HD cleaner, your best, because if that stuff spills, it's not a big deal, it doesn't burn your hands, it's good stuff for refrigeration technology. I got no affiliation with them guys they just make really great products, and I like them, they happen to be local here in California. One of these days, I'm gon na go they've, invited me over there a few times to there.
They have a branch in Anaheim. California, where they that's their factory and they've, invited me over there. I just haven't had a chance, but I need to make an honest effort to get by there just to go, say hey to them cuz. I really do appreciate the products that they make so alright yeah.
I appreciate if you guys, hit the thumbs-up button. Okay, next question that I have is: oh great one: okay, so when we're coming to freezers, whether it be a reach-in freezer or a walk-in freezer. I had someone asking me a question yesterday and I was kind of helping someone through email and they had a reach-in freezer that wasn't working properly. Evaporator fan motors would not run okay. This one had a digital control, but digital or mechanical. Let's talk about evaporator fan motors on reach-in freezers, okay, majority of the freezers out there, they're gon na have some sort of a fan. Delay limit switch okay on the evaporator fan motors and what we're trying to do - and this is on a reach-in freezer. What we're trying to do is we're trying to eliminate the amount of frost and the amount of moisture that may build up or blow out of the evaporator coil when the unit comes out of defrost.
So what we do is we will delay the evaporator fan motors and turn the compressor on and get the evaporator coil. This is on a walk-in freezer or a reach-in freezer. We will get the evaporator coil, typically, not always, but typically down to about 20 degrees. Evaporator surface temp before we turn on the fan motors, the theory behind that is that when the unit goes into defrost, there's a lot of condensation and the condensation won't all necessarily drip off of the evaporator coil.
Okay. So when you turn the unit right back on and you turn the evaporator family doors on right away, that condensation will blow off of the evaporator and typically hit the wall and freeze instantly and create icicles and ice particles and little droplets of water all over the Ceiling. Okay, so that's why we want to put a fan delay on that unit. All right, there's also some other limit switches too.
There's heater safety, limit switches and defrost termination switches. Sometimes we might combine a fan, delay and a defrost termination switch into one three wire clicks on what we call it. Defrost termination fan delay switch, that's a very common thing to so. You have to understand how those work they typically break the the common wire on the circuit to the fan motor but anyways.
That's that's a visual. We got to show that on a schematic, maybe in a video or something okay, but you always want to pay attention. That's why, when a freezer typically starts up, the evaporator fan motor should not start right away. There should be a somewhat of a delay and then you'll notice the slightest bit of frost on the coil.
Then the fan should start up. Okay, that's proper operation on a freezer all right. Let's see what I'm missing down inside the the chat. If there's any questions make sure you guys are putting them in caps, lock.
Okay, I see a lot of cool people in here. My buddy Adams in here from the HVAC overtime so is Joe. Who else is in here. I see Bill curious, HVAC guy, there's a lot of cool guys in here guys all right.
What I recommend a Rheem or rude are to you. You heard bad things about them: Matt Dillon, um, I've installed one rude. It was a good unit. I did have a condenser fan, would or failure on it, but I mean other than that they have a great warranty. I have nothing bad to say about him. Um. You know I really have nothing bad to say. Even someone asked me about Goodman air loads.
I think that's what I lost. My train of thought when I was talking earlier was about Goodman. You know it's all about how you install the unit and it's all about the customer understanding that they're going with the lower end unit, if you're gon na go with a Goodman or maybe one of these other off brands Ameristar, you know those ones are lower. End units they are sure they make higher-end units too, but those are typically lower in units.
I mean you get what you pay for. So if the customers on a budget - and they want a little bit less bang for their buck, then you know you go with one of those units and just understand it's not gon na be a Cadillac, but at the same time you can get the most expensive Trained variable speed, communicating whatever Lennox variable, speed, communicating, carrier green speed and they can have problems too. It really boils down to the way that they're installed that's the biggest thing and following manufacturer's instructions, that's a big thing too. So you know everybody makes an air conditioner.
Every air conditioner will work it again. It just depends on how you install it and you kind of get what you pay for. So all right, let's see what else ever work on residential units or strictly commercial, I'm a strictly commercial technician. Is it bad to run a system with all the doors open on an art to you? Yes, it is very bad and it can affect the way.
So if you're doing preventative maintenance is on the units, you want to make sure all the panels are on. When you pull a blower panel off what you're actually doing is you're bypassing the ductwork and you're pulling the return air, typically depending on the design of the unit directly through the blower, and that blower is meant to have a certain amount of static pressure on it. So, at a certain amount of static pressure, the amperage is X, okay and when you pull the blower door off and you run the unit without the blower door on your static pressure will drop, your amperage will go up and you can run into over amp issues And different things like that, so you want to be very careful when you get into a lot of the big commercial equipment where we have motor protectors and circuit breakers, that are protecting motors and different things like that. You can actually trip a motor protector or trip a circuit breaker, because you ran the unit without blower door on same thing, with a outdoor air section by the compressor.
If you pull the cover off of that and in some situations you could bypass the condenser and you can cause the system to trip on high head pressure. So it's very important that, while the unit's operating it needs to be worked on by a trained service, technician that understands what panels they can take off. But you want to make sure that you're leaving the panels on while you're working on the system. Sometimes you might have to use smart probes or something like that, but you got to do that while you're troubleshooting and diagnosing okay, you know. Sometimes you got a block, a condenser opening off or something like that. So you can see the electrical, but you've got to keep the panel shut as much as possible. So all right, let's see what else trained Voyager are to you heat failure, any thoughts, twelve and a half ton, that's a hard one, but there's so many different things. The train units typically run negative pressure on their gas valves.
I mean there's so many different things. The the big giant transformer in there in the r2 unit is typically for the, I believe for the igniter I mean there's so many different things. I'd need more symptoms, feel free to send me an email at HVAC, our videos at gmail.com, and we can talk about it a little bit more. By no means am i a complete expert, but I can definitely lead you in the right direction.
So can you adjust a TXV with just checking the inlet and outlet temp? That's a great question. Chad and there are some manufacturers that there's, I wouldn't say manufacturers, but there are some methods of adjusting superheat on an expansion valve without actually getting system pressures. Now I have never done that. I have heard about it, but I'm not gon na say it's a good thing or a bad thing to me.
It doesn't quite make sense, but I have heard that okay, so it is something that I have heard. I would highly suggest putting the system doing proper superheat adjustment and checking it that way. But I do know, I can't quote the manufacturer, but I do know, there's a manufacturer out there that tells you to adjust the expansion valve via temperatures which yeah it's kind of a weird way, all right. So all right, I'm gon na, go and get to some more questions on my list.
Todd had asked me about charging a microchannel condenser for the winter charge. He was asking me his method was to block off the compare of phrasing, so I could be wrong. Okay and let's not chastise anybody, but this since this doesn't make sense to me, but I'm gon na go ahead and say it so his method, if I, if I remember right, was to block off the condenser to 210 degree, condensing tempore, something like that and clear. The sight glass at that condensing temple, he was blocking off the condenser and his thought was was that was how to properly charge the system for the winter charge, that a head pressure control valve needs for when it floods the condenser and no.
That is not a proper method that I know of to charge a microchannel condenser. So here's the problem when you block off the condenser and you raise the condensing tempest - you are all good and dandy, so long as your condensing temple, whatever it was, when you had the condenser blocked off the moment that you bring the piece of cardboard off your Condensing tempers gon na drop because you're allowing air to go through that condenser. Therefore, from that point forward, you are gon na be under charged on that system. The proper way to charge a microchannel condenser is obviously lean on the manufacturer. First call them and ask them what their methods are to charge it if you're working on a heat craft unit, they have a. If you open up their installation manual, they have a method of how they want you to add extra refrigerant, and it's like ounces. It's a very, very small amount. It's nothing like a tube and fin condenser.
Okay in mind you on a tube and fin condenser I'd recommend using the sport'ln 90-30 one method, but that will not work on a micro channel micro channels totally different, so lean on the manufacturer, but the easiest way to charge a micro channel condenser.
Life is what you make it. Such is also true in the HVAC/R skilled trade. I never have been afraid to venture into new areas of the trade. Most technicians are fearful of the unknown. They become complacent. They complain but do nothing proactive to resolve their gripes. The learning curve to comprehend an area of the trade outside of what any given technician is familiar with keeps many from venturing out to different areas within the trade. Again, they become complacent. Their complaints persist but they still choose not to venture out because they do not want to operate outside of their comfort zone.
Keep the intro 👍
I wish who ever gave this q and a a thumbs down would explain why. Chris you do an amazing job at helping all of us. Keep it up. Thanks.
Thanks for answering my questions because although im 17 and I really want to be a hvac guy/tech/mechanic im curious so im asking a lot of questions!
sorry chris I was working.