Do so, ah, it's time to chill out and get ready for a mediocre q, a 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 yo. What is up everybody? Hopefully you guys are doing. Well, i'm looking to see.

Oh no okay, so nobody got the movie. So in the beginning of this stream right when i launched it, i was playing a movie in the background and it's the first person to send me an email before the end of the stream. Okay, the first person to send me an email before the end of the stream um that gets the correct answer: uh i'll, send them a beanie, but you got to give me the right answer so so far, i've had one two two people guess and they they Both guessed weakened at bernie's and it was not weakened at bernie's. It's funny that two people guessed that, but no that was not the movie that i had playing in the background.

So i'm gon na go ahead and unpin the uh the thing in the top real quick. Let me remove that and uh. Hopefully you guys are doing well, i'm doing okay over here. It's definitely slowing down as far as work goes we're getting like kind of hitting a wall.

Um. Oh snap, mark miller got it right. It was valley girl, that's right, mark! You got it. So i was playing valley girl.

In the background, mark miller was the first person to send me an email so mark. Do me a favor, send me an email with what type of beanie you want, cuffed, meaning that it has the the little flap thing on it. Or do you want non-cuff? That's just a straight beanie. Send me an email uh in the same thing that you sent right now with your address and what kind of beanie you want and i'll get it sent out to you so yeah.

You were correct, mark miller, it was valley girl, playing in the background, and so i showed a couple scenes with nicholas cage. So all right, so um yeah we're slowing down a little bit over here um. It's interesting, though, because i was talking to someone recently. I don't remember who i don't know if it was one of my friends or what but we're slowing down a little bit.

And but it's weird because it's kind of my own fault, like i don't want to take on new customers, because we just get so busy and inundated with our existing customers. But the problem is: is that we're hitting a wall and they're all getting really slow? Um earnings weren't as good for one of them and they cut spending down and it's just like a mess. So it's it's kind of interesting how we're slowing down right now. But honestly, this is my favorite time of year, the time of the year when we can just like chill out and not be so stressed, all the time um you know because, like i, i just get so busy sometimes and i just enjoy being able to take A couple days off or get off early like today i worked half a day.

I went and ran a walk-in freezer service call. Then i came home and i was like man i like that. I really dig that and some of my guys like it, we try to keep them all busy as much as possible. I mean we have work, it's just we're not all getting 50 hours a week right now um, but it's just an interesting dilemma to have.

But again most of it's my fault like i don't pursue new customers, because i'm kind of lazy - and i just don't like how crazy it gets when we do get busy. So it's just one of those things again call me a bad business owner, whatever you want to do, um, hopefully everybody's doing well, i see a lot of familiar faces in the chat right now. Um. I will address a question that i had um shoot.

I already lost it uh. Oh sorry, your screen name crash for taz gaiman. You had asked if i have a somewhere that you can send something yeah. I do have a p.o box.

It's listed in the bottom of every one of my youtube. Videos it'll also be listed in the show notes of this live stream. Is my p.o box information? So if there's something you want to send your feel free, the po box is there um. So let me see for some reason, this is kind of lagging right.

Now. My uh, my chat, is not moving very fast huh. I wonder what the dealio with that is, but oh well, um got a couple things i want to cover as usual and then uh we'll get to some of your guys's questions too. So let me hit refresh on this because my chat is frozen for some reason, so give it a second it's coming up right now and then i'm sure it'll be moving around um there we go now it's moving around to where i can see it.

So hopefully you guys are doing well where you're at i'm. Looking at the chat right now seeing what i'm missing uh thoughts on sterling engines for cooling uh, i don't have any thoughts on that. One glitter fart! That's an interesting screen, name: um how's it going! Oh yeah, everybody everybody - hopefully you guys, are all doing well, i'm just looking through seeing what kind of stuff i'm missing in the chat. Um.

Let's see uh jcc3279 asks how my crazy lab is doing, and then you said that you have four dogs, two labs and two beagles so yeah for those that don't know i got a new puppy. Uh we've been we're in full-fledged puppy stage right now. I think he is three months old now or something i don't know whatever it's been crazy. A lot of sleepless nights is what it is, because we cage train him right um, so he sleeps in his cage in our bedroom.

But then we have to take him out like three times a night. It's like having an infant again, you know, and it's like, oh my gosh, that i don't even half the time i get up. It's like muscle memory getting out of bed and walking him to the place where we take him to the bathroom. Actually, i walk them through my office out.

I have a slider right here and i walk them out into a little area. I have on the other side of the slider and that's kind of like the area we've been taking in the bathroom trying to you, know, train them and stuff and man what a trip. What a trip having a puppy is again. I totally forgot how much work it is um.

Let's see what part of a system is most likely to have vibration and pressure temperature dependent leak hole. So what part of a system is most likely to have a vibration pressure temperature dependent leak hole? I don't really know if i understand that question, but if i was to say what part of the system has vibration issues, i would say uh at the compressor, the refrigeration lines coming in and out of the compressor depending on. If it's an old semi-hermetic. We would add vibration eliminators to the discharge in the suction line.

Um, that's the most common places that i'm going to see vibrations, possibly in the condensing unit or rack, or something like that because of a fan motor vibration. But really there shouldn't be massive vibrations, causing shaking of refrigeration lines, something's, usually going on um. You know like a vibration, eliminator on a compressor. I mean that's really there for worst case scenarios in normal operation.

It shouldn't be shaking all crazy. You know there might be some damage inside of it something's out of balance or something like that. Um, let's see i'm looking through the chat. How was my halloween halloween was fine.

I got kids, we just hung out. Had some friends come over barbecued out in front of the house and set up chairs and stuff and the trick-or-treaters came and my kids went trick-or-treating and my kids are getting a little bit old for it, but they still did it and they still had fun. So it's cool, it was nice. It was a nice nice evening.

Um. Where is my dog, i'm sure my wife will come and bring him in. I asked her to bring him in here in a little while um jjmn asked where's my dog and he says caps. Just to get attention, i actually prefer caps lock.

If you guys have things that you want to get to my attention. The best thing to do is caps lock. So that way, i see it uh questions, comments or things you want me to address, make sure you put them in caps lock. That way.

I try to see them that way, i don't always see them, but um. If i miss anything, feel free to send me an email at hvacs, gmail.com, so um, let's see what else uh. I already answered that one all right: cool yeah, if you guys haven't already, please smash the thumbs up button. It definitely helps out the stream.

Okay um. Just helping youtube to realize that i'm here they play with the algorithm all the time, so it really does help out um yeah. Referring to rub out points, i would say really um places. You know where lines are not properly supported as close as possible to the condensing unit.

That's going to be the most common places for rub out points, because those are the most apt to have vibration. It's always possible in the evaporator. If you have an out of balance, fan blade or something like that, the evaporator might be vibrating, but if your system's set up properly, whether it be refrigeration and air conditioning, it's supported in multiple places in vibration, eliminators, rubber, clamps, different things like that. You have things that that kind of absorb vibration, for you, um kangaroo god, sent you here joel says that well right on man, kangaroo god's, a cool guy he's in here quite often so um.

All right am i familiar with condair steam, humidifiers you're, having an issue with the wiring, the humidistat jon stewart. No, i am not whatsoever familiar with condare uh humidifiers never even worked on a humidifier, so i'm in the land of no humidity at all. Here in southern california, i mean i imagine, that there is some people that have humidifiers, but it's not really a thing that we deal with very much plus i'm on the commercial side. So if i was doing hospital work and stuff like that, i would probably be working with humidifiers, but i don't so um how much work is it to replace the floor in a walk-in like the one this week, it's a lot of extensive work, so in order To replace i've, never done it, but i've seen it done many times.

I would sub that out to a general contractor and let him do it, but you have to completely dry the box out the walls and everything like that. So it's going to be about a probably best case scenario: a two-week process, worst case scenario: people might try to do it in a couple days, but in order for it to cure and for everything to be installed properly, you really should shut the entire system down Dry out the box put heaters inside there warm up the box to a pretty warm temperature kind of dry out the moisture. Let it stand clean it up, rip the floor out, set a new floor down diamond plate. The floor then seal it up and you need to find the source of what caused the damage to the floor.

So, when you're dealing with walk-in freezers, that's what he's asking about whenever you're defrosting, walk-in, freezers or drainage issues or they're cleaning, walk-in freezers, they never want to get water on the floor, especially if it's a raised floor. Okay, there's two different types of walk-ins: you have a raised floor where they put it on just a normal, concrete pad and nothing special about the pad, and then they put a six inch floor with insulation, usually like a polyurethane insulation or something like that, and then You'll have the surface that you walk on right. Well, in that situation, you have to be very, very careful not to get water on the floor, because it only has so much water resistance. It does have sealants and things on it, but it's only so water resistant.

Eventually, if you left enough water on that floor, it would seep down underneath the floors and then it freezes and lifts up and causes just catastrophic damage to the floor of the box. So it's so important when we're working on walk-in, freezers and walking coolers that we really pay attention to where the water's water's going. Even if it's a walk-in cooler on a raised floor, you don't want to get water underneath it. You want to be so careful about that because it just causes problems all right, i'm just kind of going through the chat right now.

Seeing what we got in here, let's see jm mn says, wants to know. If i need a three-phase contactor for over 240 lines, you see writing on contactors found that they break all lines of over 240 volt now carrier doesn't use three-phase contactors on package units for most of their modern units. You don't necessarily need a three-phase contactor. I mean always pay attention to your local electrical code, but if you have three phase, if you disconnect one phase, then you're gon na do something called single phasing.

So then it would only be energized on two phases and uh that would cause catastrophic compressor damage right. But if you disconnect two phases right, if you pull two phases out of the picture and there's only one phase in there, then it's fine, it will be energized. So there's always a leg sitting at that compressor, that's hot, but it's not gon na hurt anything at all and then uh carrier what they do and train and a couple other manufacturers will use a two-pole contactor to save money in the past. I used to think it was like a crankcase heater, but i've been educated on that and it was not.

I had some people reach out to me and uh kind of talked to me about it and absolutely is not the people that were. I was talking to about it was joe shearer and eric mele uh. Both of them have youtube channels on youtube. I don't have the information form right now, but they're two cool dudes and we were talking about it.

No, it is so carrier uses a two-pole contactor. Simply to save money um, but there's nothing wrong with it. It's just you have to understand what you're working on is all um. Let's see um what i don't know what that means all right: um, okay, so i'm gon na go ahead and get on to my uh my list of things to talk about so um uh this this last week um.

I had two videos that i released the prep table, funk video, where i rebuilt a condensing unit and then the walk-in freezer door is all frozen both of those the walk-in freezer door was yesterday um. Let me see oh mark miller. I didn't realize that yeah, you did win last week, so yeah you're right i'll, give it to you again. You can give it to someone else, but i'll send them both to you um.

That's fine! I just read your email that came through mark miller. So that's cool man, um yeah, give it to one of your apprentices. That'll be cool. So just let me know - and i already have your address then mark miller so um i'll - try to remember uh.

If i forget, don't hesitate to. Let me know, i only sent you one, okay, um, because i did just send my wife, an email today asking her to send you the one, because i haven't sent out the one from last week, so um all right. Let me see what else we got going on in here, so it is hot in my office right now um. I got a bunch of questions about this on my video that i released yesterday on the walk-in freezer.

Why, in the heck, did they in or did they ship out a door that was wood on a walk-in freezer and many people said that just seems like a nightmare? That seems crazy and it is okay. The reason why they use wood is because it's easy to transport it's easy to install. I have seen people ship out polyurethane doors with with metal clad on each side and they actually majority of the time get damaged on install because people don't realize the proper installation process for those doors. That's my opinion on it.

I don't know why the manufacturers choose to send them in the wood. I would just imagine to make them more structurally sound, to be honest with you, so no, it's not the greatest idea to put a door on a walk-in freezer that has moisture issues. That's made out of wood because the wood's going to warp and all kinds of things, but it's really about how you install the door. Like i said in the video, i am not an expert.

I've just learned a lot of weird things and learned what works and what doesn't work when installing those doors i've done a bunch of them and they're always a pain in the butt they're, not my favorite things whatsoever to do. They are very tedious, very time consuming a lot of people. Ask me why, in the heck, am i installing a door? Isn't there people that do that kind of stuff? And there is, but when it comes to these customers a lot of the times they don't want to bring in other vendors, they want a vendor that can handle. You know, majority of the issues.

So if they see a refrigeration unit, they'll ask us to install the doors and i don't mind installing a door, but i won't replace an entire box. That is not my thing too. Many trades are involved in that and it's just a headache and i'm not an installation company, but a lot of refrigeration companies out there do uh unit installations like as far as a whole walk-in box, or something like that. It's just not something that i choose to do.

Okay, so i don't mind changing a door, putting hinges, putting gaskets, that's no big deal, but i'm not going to replace the entire box now and there's a lot of very important stuff that needs to happen. I'm going to tell you a story that i was, i don't do very much new construction and it's partially for this reason, but i've got burned way too many times on new construction work. So um i was doing i'm not going to name the restaurant name because they're still in existence today, but i was doing an install and startup for a brand new restaurant and uh the the the contractor that hired me was an air conditioning contractor. But he didn't do refrigeration work so his guys because he wanted to save money.

It was coming out his pocket. His guys installed the walk-in box, but he wanted me to install the refrigeration equipment in the box, so i did so installed the refrigeration equipment in the walk-in cooler, walk-in freezer uh a what do they call it, a a bakery walk-in where they a proofing wall. I don't know whatever just where they kept a bunch of bread and crap. I they had to walk in there.

I installed all the refrigeration, and i did all the ice machines. Then i did like 10 other installs on startup or whatever, and then one of them, though, what happened was their install guys. They called me out there after the place had been open for like three weeks and they're like we got a problem, there's ice all around the box like on the floors and everything, and what happened was when he set the floor before he would before he did. The walls he did not level out underneath the floor, so there was a concrete pad and it wasn't level and then, when he tried to put all the walls and the doors together, there was gaps and it wasn't sitting level and nothing would come together right and It was a walk-in freezer and i could go on the outside of the box and i could take a infrared, uh thermometer and i could look and just from the outside of the box.

You had cold air seeping from all the floors and everything, and this place was already operational fire sprinklers were in ductwork was in. I mean this whole place was built around these walk-ins right. Walk-Ins aren't easy to change when a building's existing that contractor ended up filing bankruptcy and they ended up not paying me too. That was a whole nother thing, but he ended up filing bankruptcy.

I'm sure it wasn't just because of that job, because i mean what did he really lose on that job? Maybe 40 grand or something like that and don't get me wrong. That's a lot of money, but usually that's not a bankrupt amount. You know. Usually, someone will recover from a loss like that for the most part, bigger contractors you know, but yeah he ended up filing bankruptcy after that mistake, and it wasn't my mistake he was like what did you do? I'm, like i didn't do anything i just installed the refrigeration equipment, your problem, because with your box that you installed you know, but it was all because he didn't level the floor right.

It was just a mess. Ah, all right, hello to everybody. My buddy ralph's in here how you doing ralph um, let me see uh, where do they keep the foot lettuce chris, i don't know what i don't know what you mean by that laska uh. Let me see why not fab up a temporary curtain in the walk-in, so i could keep it on and fix the door um.

It's just too much work when i'm doing a walk-in door replacement or something like that. It's just too much work to do that. A curtain's not gon na solve anything. A curtain is not because i was working from a walk-in freezer to a walk-in core.

There's too much of a temperature change right. There curtain isn't going to do anything except for slow down infiltration when people go in and out of the box and that's it, but it's not going to be a permanent solution. So all right, looking through the chat seeing what's going on in here, um all right. All right, if i ever get creative, run a set of lines from my computer cpu water block to outside and hook up a small, evaporative coil and fan to keep the room cooler.

Oh, i see what you're saying yeah get the heat out of my office yeah! That would be a smart thing to do, especially since my computer's just pumping out the heat. It's right behind me right now. Nothing is kicking, but by the way that computer is kicking butt man, we built that thing. It's nuts uh the specs on it.

I don't even have them, but um, it's crazy. What the specs we went in it was um, quite pricey, but uh. It's kicking butt man when i'm when i'm rendering my videos. I know this is probably chinese to a lot of different people, but when i'm rendering my videos, my last week's video was a 40 gig file um and it's barely using like 40 of my cpu 30 of my cpu, or something like that and then and it's Using my gpu to help it now, i change my editing software, so i'm able to upload 4k i'm able to uh i'm not able to stream 4k, but my camera is recording 4k.

So when it posts on youtube, it'll be 4k, but it's not streaming in 4k. So it's just kind of how it is, but no it's turning out really nice, so i'm still working out some kinks and the setups and stuff and i'm still learning adobe premiere pro, but so far so good and the stream time i mean the upload time and Stuff and the rendering time is doing really good too so my biggest bottleneck now is my internet speed, so that is my biggest bottleneck. All right, um ever have a gas valve only open halfway, not allowing ice to harvest on a manitowoc by the way uh yeah. I have had manitowoc uh harvest valves, not open all the way.

Uh be sticky, not closed, all the way yeah. It is a common thing and really it usually comes from people before you not using proper refrigeration practices when they're working on the system. That's the most common reason of sticky valves um. Let's see why do they have heaters in the walk-in freezer doors to um they'll have heaters on the door gasket so that way the door gasket doesn't freeze and then the door freezes shut.

So there's a perimeter heater. Just around the frame of the box and then they'll typically be a door heater for a door sweep or like a screed. That's underneath the door so that way that doesn't freeze, because the gasket opening and the the door sweep are the weak points and a a vacuum. Breaker has a heater in it too, which is an opening to try to relieve pressure inside the walk-in.

So that way it doesn't get stuck shut, but yeah they'll put a heater in there and it's just a very, very minut amount of current um, and it just keeps anything from freezing around the doors. All right do. I ever turn away work. Um example the the bug lowboy or just suck it up um, it's been a long time since i've turned away work.

Usually, what i'll do is, if it's like, really really nasty, then i'll demand that they deep clean the box before i go in there and work on it that kind of stuff, but it's not very often that i turn away work it's occasional here and there, like For instance, last week one of my customers sent me a work order for some lights above one of their regions, and it came through as a refrigeration thing, but so i denied it because it wasn't my issue as an electrician's issue, because it was literally a light In the drop ceiling like that kind of stuff yeah i'm going to turn away because that's not my thing. I don't have time to deal with that, and you know it's not that i can't fix a light. It's not that i can't deal with that. It's that once i start taking on things that are beyond my scope of work, it becomes difficult when i have to send employees to do that.

Stuff and they're not well versed in that kind of thing, and then it just leads to headaches. So i'm limited by my employees, abilities and and there's nothing wrong with that. I mean i can push harder and take on more work and have to take on more responsibility. But i choose not to because i've done it in the past to where i had to be the only person that could work for a particular customer, because they have a refrigerator that has over a million dollars of chemotherapy, meds and different things like that and for Liability, i was the only person that would work on it and they would call all the time.

So i ended up uh well that customer ended up letting me go, but it was kind of a blessing in disguise because it just was too much stress having to deal with it all myself, all the time so um and uh jason johnson says. Hopefully i don't have spectrum they suck yeah, i'm pigeonholed with spectrum. I have spectrum, i have their fastest plan, i get like a thousand down, but i get like i'm guaranteed 20 up. Lately i've been getting 40 gigs up for upload, but um.

I have no other providers in my area, it's a weird little area where i live, where i can only have spectrum. I wish i could get fiber in here, but i can't so um scott. Thank you so very much for that super chat. That is much appreciated.

Man, you don't need to do that, but i appreciate it man and i'm hoping uh scott. You need to reach out to me. Hopefully we're going to be able to hook up if you're still going to make it to the ihacky trade show. So hopefully we can talk or figure out a time to meet up or something so um anything to drink.

Joe is asking uh. I've got a um um. What am i drinking hold on? It? Is a i've been drinking this a lot. This is a local brewery.

I believe in san diego called ale smith and uh. This is a nut brown um. This is my. I like brown, ales they're, my favorite so um.

This is what i've been drinking lately super good um. I've always liked dark ills. Brown, ales bruno's, especially amber ales those are good um. I was drinking corona this weekend because i was i was making fajitas and stuff in the right situation.

I can drink the piss beer, but it has to be the right situation so and it has to have lime in it for sure um uh, chris young says it's also a snowball effect until you don't recognize your own company, and that is exactly true. Chris. We used to have a lot of technicians working for so right now. I'm i'm understaffed right now, but my max right now is five and that's at one point in time.

I think i had six seven, maybe eight technicians - i can't remember it. It was just out of control, the callbacks were through the roof. It was just headache after headache, uh, nothing but complaints and um. We downscaled a little bit.

Let go of a few customers and narrowed it down. So i would ideally like to have five technicians right now, um right now i have two technicians, a maintenance guy and an apprentice. So we have four trucks on the road um. I would like to get another one or two full-fledged technicians, but it's really difficult to hire experienced people and it also takes time to train apprentices.

So i'm currently training an apprentice, i'm doing really good and then eventually i'll probably hire another tech too, but yeah when it you don't want your company to become something you don't recognize for sure. So the 98 deville. Thank you so very much for that super chat. Man, that is much appreciated.

Thank you. That's that's! Really cool um jason johnson says he has 40 texts and can't take on new customers. It. You know it's just nuts.

I can't take on new customers. Either there was several customers. I get people that reach out because of the videos and i feel bad they've been reaching out for years. Uh, there's one guy local to me.

That's been reaching out for like two years he's been asking me messaging me and it's like i just can't. I just don't have the ability to take on new customers, it's just nuts, have i utilized uv lights and restaurant rtus? No, i haven't um, i'm not a big believer in in that stuff. I don't understand it. So it's hard for me to fathom the indoor air quality stuff.

I have installed some indoor air quality bipolar ionizers, but it was at the demand of the customer and trust me. I tried to talk him out of it. My customer came to me one of my good customers and they said i want bipolar ionizers installed in every air conditioner. Actually, he said he just wanted uv lights and we couldn't get them.

It was at the beginning of all the coveted crap and you just couldn't get them like you. Just they just didn't exist and then, like i told them, i said for a uv light to be functional in a package unit. That's like a 15 ton unit. It'd have to be a huge bank of lights to even do anything um and i was able to get bipolar ionizers and i explained all the well.

I explained the documentation that the manufacturer sent and gave the customer all the information. And then i tried to talk the customer out of it and i said: look my opinion was, let me come in. Let me fix all your economizers. Let's get fresh air in the building, we'll start exchanging a lot of air, we'll we'll put in merv 13 filters or i don't.

I don't think i wanted to do my 13 because that's a bit much, but i was like, let's put in really good filters, we'll do coil cleanings every month, all this stuff - and i said trust me i feel like that - would be better than putting in some Of these these air quality or air cleaner things that we don't know what they are, because i don't know again, i don't understand them. So it's voodoo magic to me. Um, i've had friends, my buddy clive, big clive's, trying to explain it to me and stuff, and i just i just don't get it um. So i don't know just not a believer um.

I i'm not saying i'll. Never believe i just. I just need science. You know i want.

I want um third-party uh write-ups on them. I want people that are completely unbiased to do a write-up on their and explain the benefit of these indoor air quality devices, every manufacturer out there. That makes an indoor air quality, whatever insert name of whatever kind of device. It is that i've done research on all their promotional information and all their scientific information was paid for or written by them.

So it's like no, no! No. We need a unbiased third party person doing an independent research case on that to let us know if it's true, you know, show us the science. Don't just show us what it does in a little glass jar. You know with an oversized bipolar ionizer in a small, tiny glass jar that doesn't tell me anything.

Tell me what it does when it's in in a building. You know moving air across it and all that fancy stuff. So um i'm not saying that they don't do anything, i'm just saying that i don't understand them and - and that doesn't mean a lot because i'm not the smartest apple on the tree. Okay, so i know that all right um, what do i think of inverter units? 410A, i mean it's.

The future inverter units are the future variable speed. Compressors are the way of the future, but in order for variable, speed and inverters to be efficient, they need to have a long life, because the expense, the the initial expense of a variable, speed, compressor with a drive or an inverter system on a residential system, is Really high, okay, the expense is really high, so it needs to last 15 to 20 years to really pay for itself. Okay and the repairs you know it needs to be installed properly. It needs to have proper power conditioning.

We need to have voltage, monitors watching the voltage watching to make sure we don't have highs and lows and peaks southern california we're notorious for bad dirty power. So, but i think that inverter systems are the future. I think they're awesome. I can think of so many places that a variable speed compressor would do me a serious benefit, or at least do my customers a serious benefit on some of my refrigeration racks, because i have racks that are basically compressor killers, because they're designed with let's just say Six to ten evaporators and the smallest evaporator might be 2000 btus, but the compressor might be a four horsepower compressor and there's times that every evaporator is satisfied, except for that one 2000 btu evaporator and you have a four horsepower compressor and it runs.

It runs really low, suction pressure, it short cycles and it gets no cooling back to that compressor because there's no, no, no, no load. You know - and i think those are compressor killers and that's where inverter technology really would help out on the refrigeration side. Is it would save these customers some serious money if it lasted so inverters, i think, are the future, though. So all right do i ever work on chillers smith's hvacr? No, i don't work on chillers um.

I do like commercial refrigeration and air conditioning, so uh cyborg sheik, set sheep said that everyone is biased and there's some truth in that statement. Um. There is some truth in that for sure uh, let's see what else we got in here um. Would i move to industrial refrigeration, it's interesting to me, but i wouldn't move my company to industrial.

I would have no business doing that. I'd have to learn industrial for a good. Five to ten years before i tried to start a business in industrial um, i mean you know it's interesting to me, though sure i mean supermarket. Refrigeration is interesting to me, but i would never work those hours, so i would love to get in there and work normal hours sure all day, long, um industrial, it sounds really fun uh, but um.

I wouldn't take my company into industrial. Now, let's see what else we got going on here, do i have experience using aftermarket bolt-on freezer doors chain of lakes, refrigeration and ac yeah? I do i've done a bunch of them. I just did it last week on my video on or yesterday's video. I did a bolt-on freezer door.

Um i've done many aftermarket ones from several manufacturers. I've done tons of them, um, yeah, they're, usually a band-aid, because majority of the time, the reason why the door failed is because of massive structural damage. That was the case in my video yesterday was there was massive structural damage and the door that i put on. There is literally polishing a turd, it's not going to last because they have to replace the entire box or replace the door pocket the whole frame assembly and the floor, which just seems stupid.

But you know that's the customer's deal. It's not my thing to because i don't do the work. Do i have a specific approach to inverter boards and compressors uh? No, i don't have a specific approach. I don't have a lot of experience, diagnosing inverter, compressors and boards.

You got to make sure you have a good high quality meter, you're going to want to lean on the manufacturer, check proper voltages, but but i don't have experience with them. I would just take common sense logic to him. Uh digital compressors are pretty nice, yeah jason johnson, i mean they are. If you understand how they work and stuff, i mean i have a couple trained package units that have digital compressors in them, uh and uh.

I haven't, i don't know how to deal with them because it's their it's all trains, proprietary stuff - and you know it's like not really a whole. I mean they work. You know i don't have a lot of diagnosing going on with them um all right, so i'm gon na go ahead and get to my list of things to talk about so um in my video yesterday a couple questions people were asking about why the walk-in freezer Door was made out of wood. I kind of already addressed that it's just in my opinion.

Just for structural reasons was the entire box made of wood and no okay. The entire box was polyurethane with metal, clad on each side and it's made in a factory uh. You know kind of like um. Well, you guys know it's just it's just metal and metal and foam in the middle right, but once that gets damaged, they'll oftentimes have you put bolt on doors and the ones that the customer provided me in this situation? Was a wood bolt-on door with you know a metal clad on top of the wood um, but no the entire box was not made out of wood.

So uh, let's see what else we got in here, i'm looking through the chat. Do i already answered that question? Uh by digital compressors, they mean a compressor with an unloader right, no, not necessarily cyborg sheep digital compressors. You have uh inverter, driven compressors variable, speed, compressors um, you know in old school i mean it's not old school, but uh old school. We would have a uh, a semi-hermetic compressor that had an unloader okay and it would literally blank off you know and and basically only pump out of so many valves out of the compressor right uh.

Nowadays you can have digital compressors or inverter, driven compressors uh. That can stage the compressor down via um uh. What do you want to call it uh, unloaders, right or a type of unloader? That is one way of doing it, but there's also inverter driven that actually slow down the motor in the compressor. So the the the pumping slows down so there's a couple different methods: you can do it, but you do have the multi-stage compressors.

That literally can stage down like 27 times or something like that and some of the residential crap. But then the new trend right now is inverter driven compressors they'll have an actual drive on them and you program the drive for certain parameters and it'll slow down and speed up the compressor depending on the load. So um, let's see when drinking a beer is beer, can cold cold enough um. Well, the beer that i drink right, which is the ale smith uh nut brown um, actually tastes better when it gets to about 45 degrees, so the flavor really comes out of it.

So i actually don't drink it really cold. If you're drinking piss beer - yes, it needs to be ice cold, so you can't even taste it and then you put lime in it. So that way, all you taste is the lime and the ice cold fluid. That's it! So you start a pm on an industrial site.

Tomorrow, eight make a pairs: five chillers, three boilers, eight rtus and a split and ductless. That's a eclectic mix of equipment right there, and that seems like a couple weeks worth of work depending on how the customer wants. The pm done uh jason johnson. Is it an actual customer, that's concerned about their equipment, i mean.

Are they giving you a couple weeks to do all that or are they literally just having you come in and wash coils and move on like? Is it just a really quick, you know blow and go or is it uh you know, tear down the chiller all that kind of stuff? Do it right um, it might even be a couple months. I mean that's a lot of equipment depending on how much the customer wants to involve in it and that's something to talk about too. You know. There's preventative maintenance can mean a lot of different things depending on what the customer wants.

If you have a customer like i used to do work for a hospital customer and they didn't care the cost, they just wanted it fixed and not being down. So they would schedule down time. You would have all the time in the world, and i mean they still wanted, quotes from you, but really cost wasn't an issue because they just wanted it fixed and operational to the customers that i deal with today are like restaurants and stuff, and you know they Want you to come in and maintain their equipment, but they don't want you splitting coils. They don't want you tearing things down, they don't want you open up every contactor.

They just want you to be there for about five hours for the entire day. You know you can get nine package units done in five hours and all the refrigeration equipment. I mean you're, really not being able to spend a lot of time on equipment, but that's what the customer wants a lot of times. So um, let's see what else we got in here.

Ah 56 hours p.m. Nothing crazy! This go around next pm is 150, so yeah, okay, so 56 hours yeah. So what is that that is uh? 24, 40.. So yeah, that's not very much time at all.

So this is just a quick blow and go just to make sure it's operational, make sure. There's nothing critical happening. No crazy noises change filters in the package units um, rinse, coils off you know, you're not draining a a cooling tower or anything like that. It doesn't sound like not in 56 hours unless you've got 15 guys on that job.

Am i lysist licensed in electrical to do new installs, or do i just have training seth? No, i am a licensed refrigeration and air conditioning contractor i'm not an electrician, but we are allowed to do certain work um. Basically, i don't pull breakers or i don't install breakers and i don't pull new electrical from the breaker panel, but i will install electrical from the roof deck up. So if i have a package unit on the roof that needs new electrical and i have a junction box, you know i'll make new electrical connections in that and run new conduit to the unit. But i'm not licensed to do real electrical work.

No um all right have i ever done any hvacr commercial indoor grows no kyle b. I have not had an opportunity to do any grow rooms. Ironically, i live in california and we have like a majority of the grow rooms here, but no, i don't um plug trevor. Matthews compressor master class trevor matthews by the way is killing it right now.

So my buddy trevor matthews used to use used to work for emerson copeland uh. He left emerson, copeland on good terms, started his own thing. It's called refrigeration mentor he's all over social media. If you guys haven't seen him he's a great dude trevor and i actually are supposed to do a collaboration, it's all on me, trevor's been ready to do it since the day i asked him um, i just have been busy and haven't had an opportunity, but i've Got the perfect video where i already filmed it, you guys have already seen the video, but i want to do a compressor analysis.

I have all the parts here and i want to do it over video conference with trevor and figure all that stuff out, but trevor matthews is a cool, dude, refrigeration, mentor um. If any of the moderators can plug anything about trevor that'd be great. If someone can throw a youtube channel in there or something like that, that'd be awesome, trevor's, a cool dude um. Let's see miguel martinez, it says you're listening to me, while you book a surprise trip to italy for your 32 anniversary comp or congratulations miguel, that is awesome man, 32 years, so my wife and i are at 15, 16 years right now.

I think 16 years married and we're planning something really big for our 20th, which is coming up in a couple years. Um the plan is, if it all goes well, we're actually going to rent out the place that we got married at and do a big party there, not a wedding but like a big party, invite all of the now adults that were kids that were in my Wedding at the time, that's scary. We had like the ring bearer. I think the ring bearer at my wedding is like 19 now, which is just nuts, it's just crazy, but um, a bunch of the kids, and you know, families, that's the plan, at least in four years: we're gon na rent out the venue, um and and do A big giant party there so that'd be really cool, um yeah, john cruz.

You should trevor's a cool dude he's a really smart guy, too um. Let's see uh miguel martinez, i was going to joke around. You said you're listening to us, while you book a surprise trip to italy, so last week um, i think it was after the overtime show uh. I was a little bit out of it to say the least.

If you guys don't know, i do a show on the hvac overtime youtube channel with my friends on friday nights but anyways after the overtime show. I went to go book um my ahr hotel room and i booked the wrong hotel room. I wasn't really paying attention. I booked it through the wrong website.

It was really expensive. Uh i booked a hotel in vegas and what i ended up doing was. I ended up booking for new year's instead of the hr trade show. So that's why it was so expensive because i booked a room for new year's and my wife was like you should have kept the room and i was like no we're not going to vegas for new year's.

It's just nuts there. So um, let's see something here: real quick, looking to see if my family messed with the thermostat, because it's hot in here nope they didn't all right um. So i'm gon na go through my list of things to talk about right now, um. I already answered that questions for that one.

Let me ask that one steven asked me a question: what pressures a system should run and what superheat and sub cooling should he see and where should he check them? Okay and he's talking about a refrigeration system when it comes to anything that you're working on first off, you need to understand basic refrigeration principles: okay uh, when it comes to superheat and sub cooling, you need to understand, when they're relevant and when they're not a lot Of the times in refrigeration, we don't really use sub cooling very much, especially if it's a pump down system. If the system has an expansion valve with the receiver will typically charge via a sight glass. Unless it has a head pressure control valve, then you have to add extra refrigerant. I've talked about that in nauseam, but when it comes to superheat, you need to pay attention to two things.

You have compressor: superheating, evaporator, superheat, compressor, superheat, always trumps, evaporator, superheat. Okay, you need to have the minimum compressor superheat at a in a minimum compressor superheat at your compressor. You always want to lean on the compressor manufacturer, because that number will change um. You don't want superheat to be too low.

You always want to have at least a certain amount of superheat at the compressor. I should say okay because too little and you could damage the compressor too much and you could damage the compressor too, because most of our modern compressors are refrigerant cooled so meaning that the suction gas coming back through the suction line is required to cool off the Windings of that compressor, and if that suction gas is not cooling it off, if your superheat is too high, then if the insulation is missing off the suction lines and different things like that, then we have to figure something out. Okay, now you always want to pay attention to, like i said, the compressor superheat, always trumps, the evaporator superheat, of course, for a perfectly efficient system. You want perfect evaporator super heat, perfect, compressor, supre, but in some weird situations, especially on really short line sets, you may have to increase the evaporator superheat because you may have too low compressor superheat, because the line sets not very long - and you know it's not absorbing Very much heat from the evaporator to the condensing unit.

Okay, so always remember, compressor superheat is number one. Evaporator superheat is number two, but both of them are very important and if you adversely change one, it can affect the other one. So keep that in mind. Okay, so when it comes to what superheat should you have well, it really depends on what you're working on okay there's rules of thumb.

What i would highly suggest is this book right here: commercial refrigeration for air conditioning technicians. This is the fourth edition by dick wurst. You can find this on amazon, i'm pretty sure, there's a link in the show notes in my video for it um it's a great book and it's going to explain rules of thumb and basics about refrigeration. I would highly suggest if you guys don't have that book check it out and i got ta say thank you so very much to dick wurst, because in the forward of the book he actually gives me credit myself and brian orr for being uh like mentors or Whatever right and the online information we're giving it's really cool, i was really neat.

Yeah. Indian acknowledgements, i think, is what it is. Yeah uh he has me he spelled my name wrong, but he has me and brian orr and he gives thanks to it. So that was really nice of dick wars to do that, he's a really really nice guy.

I was very fortunate to be able to meet him at the last uh kalos training event, the hvac training symposium of which i'm really trying to plan on being at in person this coming year, uh again i'll talk about that more as time comes on um. So definitely check out that book, uh, commercial refrigeration for air conditioning technicians by dick wurst. So all right, let's get to the chat, see what i'm missing here: um hookers and blow in vegas vegas is gon na, be a a fun time for sure. So definitely is um see what else uh the channel is a master class okay, you're talking about trevor's channel, let's see um, oh so joe's saying that trevor has a master class coming up in two weeks for 500 bucks and four weeks.

Oh okay, right on! That's really cool i'll have to check that out for sure um see what else we got going on in here. How much of a difference of pressure should we have across high and low side carlos cervantes um? It really again depends on what you're working on and the refrigerant you're using okay. What you need to understand is how the manufacturer designed the piece of equipment you installed. We as service technicians can have rules of thumb, but it really is determined by how the manufacturer designed said equipment if we have a refrigeration unit that was engineered to do something specific.

You might have a really high evaporator td, but as a rule of thumb, uh basic, walk-in, cooler, basic walk-in freezer. Your evaporator td is going to be about 10 degrees. So that means whatever your box temperature is the the the you know: the desired box temperature um. Your evaporator saturation temperature should be about 10 degrees below the return air temperature of the evaporator when it's down to temperature.

So that's a good way to figure out what the refrigeration pressure should be. I'd encourage all of you guys if you're interested in finding out what pressure should be and stuff. You need to start looking at things in temperatures when you start looking at saturation temperatures, it doesn't matter what flavor of refrigerant you're dealing with, because you're just paying attention to temperatures. So if you know that your evaporator was designed with a 10 degree td, then insert flavor of refrigerant, just look at the saturation temperatures and boom.

I don't care what you know, because we have so many different flavors of refrigerant out there, that the pressures are going to change significantly from every refrigerant. It's too hard to remember all those, but it's not hard at all to remember saturation temperatures. If i know that i have a 35 degree, walk-in cooler right, we're maintaining 35 degrees in there and it's 35 degrees in there, my on average, i should have a 10 degree evaporator cd. So that means that my saturation temperature should be 25 degrees.

So i look at a pressure chart 404, a i'm looking at it right now: saturation temperature for 404, a at 25 degrees, is 62 psi. If i go over at 25 degrees for 404 is 62. 407 is 51, 407c is 43, i mean, and it goes all the way over. It's constantly changing.

But if we just look at the temperatures it makes things so much easier. So in refrigeration we have a habit of focusing on temperatures as opposed to pressures right and then so, when you're working on a condenser. If you have a really really old system uh, you know anything, that's um tube and fin uh. You know.

Typically, it's going to be 25 to 30 degree, condenser td and then micro channels, typically going to be 15 to 20 degrees, condenser td. But those are all rules of thumb and sometimes manufacturers change things right now. There's a big change coming out in the refrigeration industry, because we have this awef compliance that we now have to follow mandated by the department of energy and manufacturers are having to meet certain energy requirements just like when they implemented the seer ratings for residential air conditioning And commercial air conditioning they're doing it on refrigeration side. Now so now manufacturers have to meet certain energy efficiencies right and electrical consumption requirements right because they don't want them using a lot of electricity, so they're oversizing, condensers they're putting um.

You know different stuff to try to drop head pressure, they're, putting head pressure, control valves that bypass at really low pressures that basically say they're, never going to bypass and they're floating head pressure down because the higher the head pressure uh, the more electrical consumption so they're.