Step by step description of a residential indoor TXV replacement. Featuring James Hill .
Read all the tech tips, take the quizzes
and find our handy calculators at https://www.hvacrschool.com/

Okay, so I was in the middle of doing a recovery and realized that this is the perfect time to do. My first video here we are in the middle of a recovery, I'm replacing a thermal expansion valve on the indoor units you see. I've got my rig set up here, I'm close to being done with my recovery. Seven pound 13 ounce factory charge, plus whatever they may have added for the line set, see I've got my fan.

Blowing on recovery tank helps, keep it cool, so it doesn't overheat. Turn off my pump, we're also going to be removing this filter dryer and replacing of the 3/8 inch copper stem and moving that filter dryer to the indoor unit. So I'm gon na go ahead and get this recovery finished and get my nitrogen flowing and then we'll get that extending that liquid line dryer, add it there and move on to the next part. Okay, so we finished our recovery.

We pretty much hit the nail on the head. 7 pounds. 13 ounces act. Recharged I've got everything.

I need to go ahead and pull out my liquid line. Dryer got my stem. That's gon na go in its place, got my turbo torch with the proper head on it, and importantly, I've got my bucket o rags to keep everything cool and we're gon na get that thing changed out. We have gotten our old one out and we have installed our stem.

We even closed off the condenser coil and did a quick leak check on it, just so that I can go ahead and put it back together and move on to the upstairs portion of this job. I have my trusty TXV got my evacuation stuff on deck. Can't we we're gon na get this condenser put back together and then we're gon na go upstairs and start working on the TX beef. We are upstairs third floor of a condo building.

Actually, here we are looking at our evaporator coil with our faulty TXV. I lucked out on this one the TX B is all bolt on. I won't be doing any soldering up here, so we're gon na go ahead and get this thing swapped out and go. Do ourselves a pressure test and get our evacuation started.

So I'm gon na go ahead and swap this thing out and we'll pick it up from there. We've got our new expansion valve in there all pretty and shiny got our bulb on. I will probably go ahead and throw some foam on that. I know Linux doesn't usually require to phone them because they say the bulb is not in the air flow, but I say, couldn't hurt all t -- xv with the old washers.

We did put new washers in everything of course, and now we're gon na go downstairs. We're gon na hook up some nitrogen we're gon na pump this puppy up and let it sit for a few and then we're going to get on with our evacuation. Okay, kids, so something I forgot to make mention of on my last clip was that after surveying the situation upstairs, I decided that it was too confined to space to put the dryer filter up there. So I went ahead and put the dryer filter out here.

It is still outside the condenser, so the machine will be easier to service. Next time the circuit has to be opened as long as it doesn't involve the condenser. We can just pump it down to do what we got to do. I was real careful not to burn the ends of my dryer filter so that corrosion shots be a problem.
We're going to finish getting this thing wired together, I can go ahead and pressurize it now and get my evacuation going, and we will pick it up from there. Alright, kids, so we've moved on to the evacuation portion of the job, took a few minutes to read through my true-blue evacuation tools book just make sure I was hooking everything up correctly got my hose hooked up there rig because the convince her wall was in the Way, I couldn't get the hose to go on right there. I did test, however, to make sure I could get the Schrader valve back in once I'm done with this process. I also make sure to pull the Schrader valve out of here as not to impede and see my micron gauge going on right there, as well as my app for said, micron gauge right here.

You're gon na see we're approaching 20 minutes we're down to 20 400 microns, and this thing is just flying right along. We did drift in nitrogen from the time I opened the machine until the time started the evacuation, so I expect it to go pretty quickly. I also purge the nitrogen to the system to make it opaque, so we're gon na go ahead and get this thing evacuated and then we're going to go in here and we're gon na use. The leak check decay test that this app also has to see how we did with our brazing to make sure there's no leaks once we're done with all that we go ahead and get it charged up and see what she says: I'll, try and get some of The decay cast on video as well.

Okay, do the time constraints. We've had to cut this one, a little short. I went ahead and got the evacuation done. Let it sit for 10 minutes.

We stayed below without, and everything was good there. I went ahead and put my factory charger 3 on back into the machine. I've had the machine running for a good, 10 or 15 minutes. Now it's a little chilly out here, but I think this warm enough to get things correct, as you can see there that my sub pool right on the head super heat continues.

So that was about 30 else looks good. As you can see. That's my intake and discard here on fire love. My field piece rig makes the job so much easier.

So we got this TX be changed everything's back up and running correctly. I hope you guys enjoyed my first video I'll, try and make one of the outdoor TXV. I'm getting ready to go, do as well.

23 thoughts on “How to replace a txv”
  1. Avataaar/Circle Created with python_avatars Rell Nelz says:

    I saw no steps, only talking

  2. Avataaar/Circle Created with python_avatars Nicholas Grispino says:

    It helps to actually show what you're doing in a how-to video…this video is pointless.

  3. Avataaar/Circle Created with python_avatars Sinless Kain says:

    Very nice well-put-together video. I learned a lot today

  4. Avataaar/Circle Created with python_avatars Robert Cherry says:

    Soldering? Did you mean soft solder? That is would you have brazed in TXV or soft soldered the txv ?

  5. Avataaar/Circle Created with python_avatars Angel Rosado says:

    Awesome video btw what’s the going rate on replacing one with drier filter as well

  6. Avataaar/Circle Created with python_avatars J P says:

    Nice!

  7. Avataaar/Circle Created with python_avatars Juan Morales says:

    did i see blue house in hight pressure valve

  8. Avataaar/Circle Created with python_avatars jose rodriguez says:

    Dame should of just changed the whole if it was in warranty that coil looks like it’s about to go bad

  9. Avataaar/Circle Created with python_avatars 1990s Railfan says:

    My wife was home when an HVAC company came out to look at our system. She said it would cost $2,500 to replace the TXV. Does this sound right?

  10. Avataaar/Circle Created with python_avatars JCstudios says:

    Blair Witch Project 2? Service area Ottawa??

  11. Avataaar/Circle Created with python_avatars gangsnowman1 says:

    You couldn't pump the system down at all? Why replace the filter drier if it wasn't exposed to atmosphere. Seems like way more work than it could have been.

  12. Avataaar/Circle Created with python_avatars ck kendrick says:

    How much does it cost for the txv, i got a quote of $850

  13. Avataaar/Circle Created with python_avatars Brad Estes says:

    So much for “how to”

  14. Avataaar/Circle Created with python_avatars K Comfort Systems HVAC says:

    Good video,,,bra,,,question why you chance the valve ? What wrong whit it ? Are you in Kanata ?

  15. Avataaar/Circle Created with python_avatars Clay Austin says:

    Step by step????? If this is your version of "step by step" I'd sure hate to see your abbreviated version. Service area Orleans??

  16. Avataaar/Circle Created with python_avatars Tc says:

    Fortunate that the coil was not leaking in the state that it’s in. Nice repair and going the extra mile to relocate that drier for the future.. respect

  17. Avataaar/Circle Created with python_avatars JustinP HVAC says:

    Is it me or does it seem weird hearing it called a dryer filter? This is the second video, different people, I’ve seen calling it in that order. I’ve always called it and heard it called a “filter dryer”. Just wondering what everyone else calls them and if they find it strange?!?

    Btw want to say great video! Always enjoy seeing how other people do things and maybe learn something new along the way!

  18. Avataaar/Circle Created with python_avatars AVR 1961 says:

    What is the tool you were using with your ipad for the vacuum part of the repair thanks

  19. Avataaar/Circle Created with python_avatars All4ChristNone4me says:

    How long was total evacuation time? I know it’s not about how long but was just curious. I’ve always found it took awhile to get below 500 when condenser is open to the line set. Unless I changed out the compressor. Are you in Barrhaven ?

  20. Avataaar/Circle Created with python_avatars Hozer HVAC says:

    Great video. Awesome tools. Lennox makes it impossible to use two hoses lol. I’m thinking of doing the same and just using one hose fr9m trublu

  21. Avataaar/Circle Created with python_avatars Running Coyote says:

    Either recover the refrigerant or perform a pump down. Remove said TXV and install new as well as a filter dryer. Perform a leak check. If everything checks out reintroduce refrigerant, and check delta T and charge. Done. Oh and don't forget to do a vacuum to at least 500 microns.

  22. Avataaar/Circle Created with python_avatars Gatlin Holland says:

    You didn’t cut the drier out?

  23. Avataaar/Circle Created with python_avatars Chuck DeArruda says:

    Super video, Thanks! Looking forward to many more. I really like your explanations of the procedures,,,, and love the evacuation rig and FieldPiece probes. Thanks!

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.