How to Replace a HVAC TXV with Piston

Рет қаралды 63,198

3 жыл бұрын

Welcome to HVAC with John Israel KZfaq Channel. On this channel I Bring you along on HVAC Service calls, HVAC Installs, HVAC Maintenance and pretty much anything else HVAC related. Enjoy and thanks for watching.

Пікірлер: 221

@PB-et9my 7 ай бұрын

I appreciate the logical yet professional approach to solving the problem. That's what most of us do that just want to get the job done, take of the customer and no go back a 100 times! You can solve a problem or service it over and over...

@Mwfrizzellandsons Жыл бұрын

I’m not an HVAC man. I just like to know how things work. Excellent video. Thanks.

@andrewtylerjr2342 Жыл бұрын

I say... Great Job! We've bought a new house one and a half years ago. The TXV has to be replace already. I think that the piston system would be a wonderful idea... Thank You for Sharing

@TedCookHVAC 3 жыл бұрын

Sometimes that tiny bit of efficiency sacrificed is well worth it for trouble free operation..... good video John !! Keep them coming.

@hugoayala6262 Жыл бұрын

Can I do the same with a duel fuel system? Since I’m having trouble to get a hp coil?

@Heavy_metal_rulez 3 жыл бұрын

I have done the same thing many times before when a txv fails. A piston is a much more simplistic metering device that can literally be trouble free. I wouldn't have changed the drier either. Good job John!

@raheemromious3746 21 күн бұрын

I'm new to the field (under a year) so this just saved me a lot of hassle especially since I might have to change out 2 tomorrow 😡

@frankgonz31 3 жыл бұрын

I wouldn't change the drier ether, it's just an in and out job.and when you have been doing this for awhile you know your stuff.great job .

@m0fr3sh90 3 жыл бұрын

The txv failing so quick and crappy drainline shows the installer was a hack. Why take a chance with leaving the dryer, 5 minutes to replace.

@UltraHydrophobiccoat 3 жыл бұрын

No, you can have dirty stuff there

@bobakleh1397 2 жыл бұрын

Agreed, if you leave the system open for a while then it can bring in some moisture. Even then, the filter drier will dry it out, and its a brand new drier. Forget that, look at that boogers on the braze. SMH.

@rodgraff1782 Жыл бұрын

From the looks of those braze joints, and burned up grommet at the indoor coil, one has to wonder how good the rest of the workmanship is. Maybe the TXV failed due to scale or contamination in the system. I would definitely change the dryer. Who knows what contaminants are inside that system,if you’re not the one who put it in?

@bobwhitfield9491 3 жыл бұрын

Thanks for the content bubba John I'm going through school in Vegas and I learn best from watching people do the job. I'm from the south so I can listen to you talk without getting distracted or annoyed! Hell yeah and thank you!

@thisisyourcaptainspeaking2259 3 жыл бұрын

Thanks for taking us along, good work.

@tonydelgrego2906 3 жыл бұрын

As always another great job and a new customer. Stay safe my friend

@waynehensley132 3 жыл бұрын

Nice job John, really enjoyed watching this

@rogergregory6512 3 жыл бұрын

Man I hadn't seen anything from you in awhile I didn't know if you were still alive. Glad you are.....

@jessetmuniz7834 4 ай бұрын

Great Job!! One thing I learned is that photos and videos. Is not always the same thing vs when you're live working on something. Then you have to proof to people something. Seen an issue or something in front of you with your eyes, live vs a video. But Thank you so much for this great video for showing us how do it.

@barron267 Жыл бұрын

Thanks. I’ve hear of this being done but it’s good to actually see it because it’s my only option on a job this week.

@shine-cg9uf 3 жыл бұрын

Great video and thanks for sharing very informative n helpful .👍👍

@TheLenaweeTrekker 3 жыл бұрын

Oh yeah, good hardware gets saved. I have the old Tecumseh compressor covers and a bunch of the overload holding brackets and the new Tecumseh compressor covers. I also save the different capacitor mounting brackets. I have a Graslin defrost timer box filled with the extra parts from those ACME 700 fan motor kits. I can't believe how many times those old bits saved my butt in the field.

@serenity6988 2 жыл бұрын

a real hvac tech!! Thank You...

@treyconner1991 3 жыл бұрын

Good stuff, John.

@DaannyyTrraann 3 жыл бұрын

i was told to replace the filter dryer, but after seeing the comments and this video i see that it’s kind of unnecessary! thanks! great vid helped a lot!

@rodgraff1782 Жыл бұрын

Don’t believe everything you hear on you tube. You learned correctly.

@jorgeLopez-xn9uy 3 жыл бұрын

Thank you so much. This video is really helpful..

@pnajera3938 3 жыл бұрын

Not a problem installing a new filter dryer , thats why they have vacuum pumps.

@hugogarcia7574 3 жыл бұрын

Learned a lot. Thanks

@Demy26 3 жыл бұрын

Good job John.

@MrsTashaG 3 жыл бұрын

Good job, John

@williamserver4332 Жыл бұрын

This was a great video. I learned something

@andreeriner811 2 жыл бұрын

I have no issues with replacing a bad txt with a piston I’ve done it a million times. I’m like you though, if it’s a warranty unit I will get a new valve if it’s under warranty. I also agree with you about the filter dryer.

@kreep3r 10 ай бұрын

There are houses with undersized units that need a piston to produce 32 - 33 degree coil temp

@andygalindo8978 3 жыл бұрын

Great video

@jeanjeanbaptiste4013 10 ай бұрын

Good job John, you did great

@Blackwarriorhvac 10 ай бұрын

Nicely done!!! Good work!

@dirkcanyow 3 жыл бұрын

Great video John, thank you for passing along the knowledge.

@UnashamedKen Жыл бұрын

Great video thank you!

@Eddy63 3 жыл бұрын

Good 1 John ...

@Howyoudoing98765 3 жыл бұрын

No disrespect. All in fun keep up the great work and the videos.

@johnisraelhvac2019 3 жыл бұрын

Umm no dude.

@nastyhvacr 3 жыл бұрын

Holy crap

@wilzv4382 3 жыл бұрын

Been enjoying your videos. I'd like to see a complete step by step on a condenser change out. I know it would be hard to film, but I'm curious of the process and I cant seem to find any videos on it. Either way though great videos. Keep em comin!

@dontarguewithfools 2 жыл бұрын

For real? Hell get a job in HVAC brother

@flyobdab7746 Жыл бұрын

Great video! What's the best piston size / part number for a 1.5 ton Bard wallmount R-22?

@robertport3620 Ай бұрын

A TXV system is far superior of a metering device than a piston. I would never change to a piston. But I have been doing this for 50 years.

@ThermalDynamicSevices 3 жыл бұрын

The guy who installed that condenser sure did leave some ugly solder joints lol I wouldn’t change the drier either, keep up the good work John!

@ericshell1256 3 жыл бұрын

Brazed joints

@chandlerhamlin435 3 жыл бұрын

What kinda core remover tool did you use to put on that core in the air handler? And could you talk about the widow maker?

@picklerix6162 3 жыл бұрын

The closet that my furnace and 5 ton coil is located is a little bit wider but shorter than the one in this video. Removing the old HVAC equipment out wasn't that bad but installing the new equipment was a pain in the rear. I had to get a winch and pulley to drop down the old coil from the attic (after removing the furnace) and pull up the new coil. My daughter helped me remove the old furnace (after I removed the blower assembly) and she also helped me lift the new furnace into place. I dropped the new coil down onto the new furnace after I put a thick bead of silicone on top of the furnace to seal it. I attached and sealed the new plenum to the top of the new coil. I think I lost ten pounds just installing the furnace and coil. BTW, I pre-piped the coil (so the pipe would be easily accessible for final soldering with Stay-Brite 8) and pressure tested the coil and pipe before soldering it to the line set. I have no idea how the installer got the original furnace, coil, and plenum installed in my house when it was built. Somebody said that it was probably installed before the sheetrock went in and that makes sense.

@greyguy9767 Жыл бұрын

Not necessary to caulk the coil box. The amount of air loss is a minute factor on a proper fitting coil. May never come out again.

@wlms04 3 жыл бұрын

Glad to see you're back uploading

@reginaldphillips667 3 жыл бұрын

The vacuum takes care of the air in the line and drier. Good job 👏🏽

@jakem117 3 жыл бұрын

Can you supply me a part number for a liquid line filter drier that removes air? I'll save you some time brother. You won't find one

@kennethdandurand3472 3 жыл бұрын

OK, I am still new to this, so please answer me this. I picked up a Evap coil by ADP. The liquid line attaches to the front of the case...and has a piston in it, but the unit is for r22 or 410a and has a cap on it. At 12:00 on your video you have what I do on the right or bottom side, but I can not find anything to connect to it...i.e 3/8 copper tubing to your left side or top. What kind of connector is that on the left or top side? Under the cap on mine is the white seal, then piston, and then another small white seal. I spent the better part of an hour going to every fitting I could at Lowes...so they do not have it. I recon that the threads are for a TXV valve...so what else has those threads??? This is obviously not a flared or compression connection. The threads appear to be (exact measurements here...) .75 OD of the threads, and the flat is .675 and the threads appear to be 24 Tpi. Help, maybe?

@MyLeafy1 3 жыл бұрын

piston came with the airhander optional bag or you cross referenced it? nice work

@gerardonavarrogomez7289 3 жыл бұрын

Hi ! Excellent videos thanks 🙏🏻 1 question if I want to work with the home insurance to they send me jobs how can I do that I don’t know if you can answer this but thanks for your videos again

@darrenaugustine6508 2 жыл бұрын

What size piston do you use? Do you have a chart for different tonnages?

@SuperCano1997 2 жыл бұрын

How do you choose a piston for each brand? I am starting in the field.

@jeffdavis5700 3 жыл бұрын

What size piston did you use?

@ellispeterson706 3 жыл бұрын

I didn't see a lock-off valve on your micron gauge. How did you remove it without getting a little air in system?

@chaunceyturner871 3 жыл бұрын

Ok! Keeping it real.

@indyoutdoors812 3 жыл бұрын

John, please provide more videos, and get back to the hangouts. Miss ya brother

@echat50 15 күн бұрын

i like your style

@Austin23191 2 жыл бұрын

I agree with you about the filter drier. I replaced a txv on a trane unit today and the drier was built into the condenser. I pumped the condenser down so I wouldn't have to recover the r22 and pulled a real good vacuum. 1 Trublu hose on the suction and bluevac gauge on the liquid. Pulled down to 211 microns in about 20 minutes

@davidwillkomm3484 Жыл бұрын

Good job. Really there’s no need to change the filter dryer if one of the unit has it been exposed alarm. The time to the compressor didn’t burn out through there’s no signs of contaminants. changing the filter dryer would just be extra without real reason in this case

@rodgraff1782 Жыл бұрын

I always put the caps on the service valves while pulling a vacuum. Don’t trust the O rings alone.

@PURGE-3000 19 күн бұрын

What about in cool weather? Won’t the piston over fill with liquid and that might reach the compressor ?

@vankoabv Жыл бұрын

John...do you had a situation to remove the TXV with idea to replace it with piston but there has no space for it ???

@hvac01453 3 жыл бұрын

Good job. The only critique I would add is, you skipped a step... namely pressurizing the system for leaks, to check your work. We’re not perfect and sometimes things don’t close up the way we would like them to. even if it’s only 40 psi ( because of the pump down ) and some bubbles. This way, if the service valve leaked, it still couldn’t leak into the refrigerant side because of the higher pressure.

@paulshlasko3608 Жыл бұрын

If the txv goes bad, doesn't the quality of the coolant become suspect? So putting in a new dryer would make sense unless you were in a hurry or something?

@hugogarcia7574 3 жыл бұрын

Efficiency vs reliability. Which would choose?

@OBASTOS1 3 жыл бұрын

Hey body are you and your family okay with the huracán? God bless you!

@youtbe999 Жыл бұрын

Interesting... Where's the new piston? How did you choose the right size?

@jonathanraul4086 3 жыл бұрын

Thank you again nice video how do you take the power from the 220 to 110 what do you do or is there a device I can buy

@Barkershane11 3 жыл бұрын

One leg on a hot wire the other on the ground to act as the neutral

@MariosACandRefrigeration 3 жыл бұрын

its either the valve or refrigerant if both your guessing.return plenum is not air tight.

@ApartmentMaintenance 3 жыл бұрын

Nice repair John 💪 I wouldn't of replaced the drier either. A quick in & out with a vacuum all good to go! Good to see you upload a video. Hope to see you go live soon 👍

@igoiks 3 жыл бұрын

Great video showing what not to do!! I cant believe there’s people out there doing such a hackery . I would be worried putting this on KZfaq. Ouch

@chinowong69 11 ай бұрын

What piston size did you use ? I believe you said it's a 3ton 410a. Right?

@richardvisco6370 3 жыл бұрын

How do you know what size piston to use did you call manufacturer or have a chart

@jeffreyjohn2037 2 жыл бұрын

Download a chart. 22 and 410a require specific size

@txhvacr1978 3 жыл бұрын

Ever think why the txv went bad, a piston may have less parts but it cant control the heat load, how about doing a proper evacuation and install a txv properly, and if there are noncondensables in the system or coming from the dryer, now the piston will be blocked

@paulmancia5176 Жыл бұрын

How can I find out what size piston it has?

@hvactechpr7872 3 жыл бұрын

7/16" open wrench on that equalizer does the trick with a 5/8" open for the nut

@bobloblaw9791 3 жыл бұрын

Or 2 crescent wrenches

@dieseldc409 3 жыл бұрын

What’s the size of the brass cap you installed over the schrader? Same size as the high side cap outside? Thanks

@jeffreyjohn2037 2 жыл бұрын

Yes 1/4"

@brianbray5397 Жыл бұрын

Be aware that when you jump power using the equipment ground as a return, everything bonded now has return current on it. i have done it myself when there is no alternative, just be aware of what your doing.

@jimtalor7971 3 жыл бұрын

Let me say something!! You Da Man!!

@ianwallaby9241 3 жыл бұрын

how much do you generally charge to change the txv to the piston if you dont mind me asking?

@Bigsteve123 2 жыл бұрын

$800-1k minimum

@Austin23191 2 жыл бұрын

About three fiddy

@booch32484 3 жыл бұрын

Nice wrist burn bro

@tomwalker9184 3 жыл бұрын

That's a tattoo they call the burner

@Aj-hi2kc 3 жыл бұрын

Evening John, while I understand location makes all the difference; what do you typically charge to replace HVAC TXV? Local companies are quoting between $1800 and $2000. Thanks in advance.

@ljv2094 3 жыл бұрын

That's how much we charge in the bay area

@brettr5188 Жыл бұрын

That’s insane. A txv is about 100 dollars. 2 hours of labor. No way it should be over a 500 dollar job unless u lost all your refrigerant.

@infl 10 ай бұрын

@@brettr5188Man they’ll charge you $1000 for a capacitor…

@xingbowang 2 жыл бұрын

You know what you are doing.

@RichieRich210 3 жыл бұрын

Have you sent that shirt for judycat boss?

@waynespringer501 3 жыл бұрын

The filter drier should have been moved inside, therefore you should have replaced it along with not robbing them by removing a txv for a piston. You should rename your channel to Shade Tree HVAC

@joesours6751 3 жыл бұрын

TXV sucks may be energy efficient but not cost efficient when built like crap and you have to pay to change out. Also this is some trash unit from r e micheal that you can tell was not purged bc of the burn mark up the door fuck a TXV and a filter dryer get in get out it’s trashed anyway from the start

@israelquintanilla2784 3 жыл бұрын

Thanks for the brass cap lol

@tonygarcia1743 10 күн бұрын

👍👍👍👍

@jsparlin1 10 ай бұрын

what size piston?

@larryh2161 3 жыл бұрын

how about pressurizing with nitrogen before the vacuum?

@connorlacy1536 Жыл бұрын

You can detect leaks with vacuum

@copkhan007 3 жыл бұрын

You Don't use Nylog on the connections where there may be a possibility for a leak?

@johnboy8191 3 жыл бұрын

That is a great suggestion I love nylog works great on flared mini split connections!!

@steveg5576 3 жыл бұрын

You got stickers now ????

@kwm380 3 жыл бұрын

Israel, I have a new 410a unit with TXV and the low pressure line is warm. I called the pro and asked about it, and he said this is normal. Is that true? TF, Lafayette, LA

@kwm380 3 жыл бұрын

@Eric M I'll be there tomorrow and check it but I know the line was definitely not 25 deg colder. I'll bring my IR thermometer and take some temps of the lines and the vent temps.

@rossflores4394 3 жыл бұрын

John where are you guys getting these blue Handled Crescent wrenches from what is the name of that Crescent Wrench

@hvacshinobi8047 3 жыл бұрын

Ross Flores Sanilac makes the crescent wrench Amazon has them Home Depot etc.

@rossflores4394 3 жыл бұрын

@@hvacshinobi8047 thanks brother I've seen norcal Dave with the same tool as well as a few other technicians.

@jphvac5725 3 жыл бұрын

Those are channel lock brand crescent wrenches. Have a small and thin version that’s great for tight spots

@rossflores4394 3 жыл бұрын

@@jphvac5725 thanks for the info brother I greatly appreciate it

@joelmelendez5916 3 жыл бұрын

The txv was faulty ???

@williamjthepoet1675 3 жыл бұрын

Did I not see a nitrogen pressure test?

@johnson4940 3 жыл бұрын

If you trust your work enough you can skip nitrogen test!

@egbertsanchez6264 3 жыл бұрын

He held vacuum before releasing refrigerant. Ultimately if micron reading don’t rise there’s no leak

@mnew213 3 жыл бұрын

How much you charge for this service?

@marchomeautorepairs 3 жыл бұрын

Keep up the good work

@mr.18s73 3 жыл бұрын

What about a carrier coil.....not the sam3

@RW-to2fy 5 ай бұрын

Need to adjust the camera angle in order to see the work area

@MrDjonks86 3 жыл бұрын

No anti seize on the nut & no valve between the micron gauge?

@benjamintimmins1656 3 жыл бұрын

Nice video John. When are you going live again? I missed your last 3 or 4...

@kevinkevin9448 3 жыл бұрын

Nice video why would I change it to a piston just wondering

@rpsmith 2 жыл бұрын

I have no clue why anyone would prefer a piston over a TXV.

@jeffreyjohn2037 2 жыл бұрын

@@rpsmith so you are clueless?

@armantokimiadi1900 Жыл бұрын

@@rpsmith I have some rental properties, 30 to 40-year-old houses. Some have Bryant air handle units those have piston flow raters. I bought those properties back then in 1995 and 1996. One Bryant unit condenser has a Master Valves; metal seal valved is closed after you charged the system. I have never lost any freon in the system the last 12 years. No problem with piston rater for the air handler for 27 years, of course never replace it yet on PSC motor inside the air handler. The other condenser is RUUD. It does not have master valves at the condenser, have to charge the freon every 3 years. Inside unit is Bryant; 27 years old, just replace the PSC motor last year. It costs me $125 and I installed it myself about 3 hours with cleaning up the blower wheel. All using R22 systems. You do not know how expensive is to change the TXV now a day, between $750 to $1000. Lucky, I do not have to have a headache with the txv. Now a day I have to change the compressor on my 8-year-old condenser. Your efficiency of your air conditioning system is determined by how much heat is removed from the inside that depends on how much freon flows in pounds multiplied by latent heat of evaporation of the freon. Other newer house I had to replace X-motor inside the air handler on 3-year-old unit, this pissed me off. It cost me $400 motor only, I installed it myself. Hand down I choose the refrigeration system using master valves at the condenser, sight glass, piston rater; psc motor at the air handles. If your suction line by your condenser is at 40 to 45 degrees that is the best to cool your compressor, your compressor will last very very long. Compressor for the Bryant unit was piston compressor that still working like a champ (27 years since I bought the house). The compressor for Ruud was Rotary compressor made by Copeland) 27-year span is a long time to see who perform best. Regards, Armanto. Mechanical Engineer

@tmmyjay 2 ай бұрын

Excellent video! Are the pistons based on tonnage? If anyone has a part number for a piston that works on a 4 ton (York-XAHC48FXXN1A coil) heat pump, please let me know. It ships without a TXV and I'm having a ridiculously hard time sourcing the correct one.

@frankgonz31 3 жыл бұрын

did you put an o ring in cap.jk. great job.

@Nateone626 3 жыл бұрын

😂

@Nateone626 3 жыл бұрын

You know what’s funny they’re prolly comments like that too hha

@dylandrymond3951 3 жыл бұрын

Good job. Just use hose clamps my man. Use valve core torque wrench, cheap, fee bucks. Thanks for the clip.

@basspig 11 ай бұрын

I don't quite understand why you're measuring superheat when you have a txv. Supposedly superheat varies with the operation of a TXV. Or so a technician at Mr Cool told me.