How to Replace Leaking Pressure Relief Valve on Water Heater
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- เผยแพร่เมื่อ 8 ก.พ. 2025
- How to replace a leaking pressure relief valve on a water heater. Is your pressure relief valve leaking? Or maybe it is an intermittent leak? In this video I explain what the pressure relief valve is for, how it works, and how to replace one. In this video I go over two methods of how to replace it:
Method #1:
1. Turn off the gas/breaker and turn down the temperature
2. Close cold water shut off valve on top of water heater
3. Open a hot water faucet and leave it opened
4. Hook up a garden hose and open drain valve to partially or completely drain the tank.
5. Close drain valve when done and disconnect garden hose.
6. Remove old pressure relief valve and put new one in.
7. Open the water shut off valve slowly and give it some time to fill back up.
8. Turn gas or power back on and increase the temperature.
Method #2:
1. Turn off gas/power and turn down temperature setting.
2. Open hot water faucet and put your hand under the water for a while. If water is too hot, let the water keep running until it cools off to the point where you can leave your hand in the water. Once the water cools off, close the hot water.
3. Close the water shut off valve on top of water heater.
4. Open hot water faucet again. The water should stop flowing completely or come to a slow drip. Close the hot water faucet.
5. Remove pressure relief valve and put new one in.
6. Open the water shut off valve slowly.
7. Turn gas/power back on and increase temp set point.
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Love your videos! Hands down, top shelf quality information. Great getting Knowledge from an expert, that you're able to apply at your own house. Look forward to the next video!
Thank you very much! :) Glad you liked the video, and thank you for commenting!
Love your videos! You have saved me so much money and even better, educated me on how water heaters, heat pumps and air conditioners actually work. You methods are awesome. Unfortunately my water heater tank is in my attic. Yes, I know. But regardless, thank you for making these video's. I just replaced mine (20 years old) and they wanted $2k to do it! I did it for the cost of the Water Tank from Lowes. Take care.
You are great. Just played with relief valve like you said...my leak has stopped! Thank you for this video!
Finally I find someone who is thorough, very descriptive and illustrated that even I can understand and follow. Thanks!
Great detailed video! Our plumber was out this morning for a minor call. Strongly suggested we change the valve. Picked up a new one and will be replacing it in the morning thanks to your video!
It is people like yourself that help others who want to be home owners help understand what is going on in their homes and how to fix stuff!!! Thank you for spreading your knowledge on to others man!! You earned yourself another like n sub!!
Thank you for this video. I just finished replacing the valve and all went well, following your video instructions. So easy to do and I probably saved a few hundred vs hiring a plumber.
You're welcome! Glad to hear you were able to get it done smoothly!
Thanks for inspiring me to buy the pressure relief valve and to try to replace it myself on my 7 year old leaking water heater. As a last gasp before installation, I tried the "exercise the valve" method, and it worked! Initially, I had tried to open it, but it made the leak much worse, which led me to buy the replacement.
Awesome! Glad to hear that worked for you! :) Thank you for coming back to leave a comment. If the relief valve was not too expensive, I would just leave it as a spare. It might start leaking again down the road.
Watched several and IMO this is the best one. I've changed these before but was looking for one that didn't drain the tank. Thanks for this great video.
Jay; you actually help All People in either A/C or Electric or Gas Water Heater Companies. I would watch you always when I need service.
THANK YOU SO MUCH
I was literally googling a new controller when this video popped up. Did the 6x on the Honeywell, fired right up!!
I am a DIY when I can to avoid the high cost of hiring someone. Following your instructions, I replace my valve yesterday. It was $14.00 :-) you saved me $$$. cheers :-)
Awesome! Glad to hear my video helped! :)
You're the coolest for making videos like this. Had a plumber come by and try to tell me I needed to replace the whole water heater. After some research, I went out and bought this part, and thanks to you it's only costing me about 20 bucks to try to fix it on my own.
Glad I could help :) Thank you for commenting!
I too had a company tell me I need a new system because of mineral deposits that can create a shelf inside the tank and create a barrier since it was running. I also had no air in my expansion tank and he said it was bad but no water came out.. all I need to do is put air back in the expansion tank and replace this valve I believe. I still get water coming out steady when I open the valve so I think his deposit shelf theory is bogus.
Used this vid last night! Saved me 300 did it myself with this vid! Thank you wish I could share the pic of the valve I replaced
You are the greatest most intelligent person on the face of this Earth. Believe me, I know.
Thanks Mom!
@@kirbyculp3449 2 years you wait to write? Didn’t I raise you better than that!
Oh my! I just found your channel. I am supposed to close in a couple of weeks on a 1975 double wide and the inspector found that the WH had no relief valve. I want to DIM and your instructions are so good. Your voice tone and knowledge is so great. You are my go-to instruction source because I am sure I will find a lot of things I will need to do after I move int. Thank you so much!!! (A 67-yr-old Grandmother) :)
Very helpful video. Touched on the right aspects, right details. Exactly what I was looking for. Helped me to fix the overflow pipe water dripping issue by myself. Thank you very much !
My water heater start leaking and I was looking for some information in TH-cam found your video and now I know how to replace releafvalve like I said before you are awesome !! Thank you so much for your help and God bless you and family ..
You're most welcome! Glad to hear that my video was able to help you out. May God bless you and family as well! Merry Christmas and Happy New Year! :)
Thanks for the video. You showed how simple it is to do this yourself, and I just finished replacing the the pressure relief valve on my water heater. LOL, it took longer to go to the hardware store to purchase the valve then to actually replace it.
Nice! :) Glad it went smooth for you!
I was wondering how that worked.
Thanks for explaining what happens if it gains too much pressure.
Great video. I have to do this job & feel really confident after seeing this. You didn't skip one step. From start to finish. Awesome job!
As always, on point! This young man is the best on TH-cam, bar none!
Excellent I did it the second way and I'm a beginner. Thanks for this video...probably save me hundreds of dollars
Thanks so much! Not a handy man at all and it worked just like you said! Saved $200 and a hero to my family👍
Awesome! Glad it went smooth for you :)
Happy to hear that! Thank you for commenting!
Fixed my leaking today by myself, thank you
I prefer the vacuum method. If tank has both hot & cold shut off valves, I only use them, & pull vacuum thru relief valve, then swap em out fast like you did. But some tanks don’t have the hot water shut off valve, only cold water shut off valve, and you have to trust the occupants will remember not to turn on hot water faucets, after you explain to them. Every house is different :) great video !
Yeah, the vacuum method is lot faster :) So far I only got one "shower" from a pressure relief valve where someone opened up a faucet on me. I rarely see a shut off on the hot side though. Usually only the cold.
Very educational video. Here's something else often overlooked. Just as important as the pressure and temperature ratings (150psi/210°F) is the BTU/hr rating of the valve. The BTU/hr valve rating should always exceed the BTU/hr rating of the heater, as shown on the nameplate on a gas water heater, for an electric water heater, multiply the wattage by 3.4121 to find the BTU/hr. In case the thermostat fails to shut off the gas burner or electric elements, the valve must be sized to discharge the overheated water at a greater rate than it's being heated at, to prevent pressure build up and explosion. While this is happening, cold water enters the tank and this is how the T&P valve moderates the temperature and pressure to keep everyone safe during a malfunction.
Thanks for your videos they’re helpful. I think it’s best to drain the tank a bit and then swap them out just in case. You don’t want to get water on the gas valve.
Awesome Video..Watched it 10 times then tackled the project. It was a success! saved me prob 100 bucks Thanks..Very well explained!
Thanks! It worked. The only difference was that the little sensor wasn't quite as long on the new one as the defective one. Everyone assured me that it didn't matter.
Just called this guy, awesome helped me fix my stuff. Great guy
Excellent...much needed since I am doing this tomorrow on our water heater.
Good luck! :)
My 3 year old water heater had an occasional drip from the tpr valve. Plumber said I needed an expansion tank but no one in my city has one, plus the old water heater in here lasted 13 years without one. Another plumber said that those valves can go bad and to replace them ever 2 to 4 years. I replaced it last week and so far no leaking.
Is it a richmond?
Fixed my valve with your help! Thank you so very much!!
DUDE!!!! Thank you soooo much! I followed your video to the letter and everything went 100! Lemme know if i can buy you a beer!
Thank You vary good information
So helpful and enjoyable. Glad I followed all the precautions. Feels good to do it right.
Excellent job - clear video, fine commentary & a new T&P valve - hoorah!!
Excellent, informative video. Please keep them coming, they’re very useful in the field.
Glad to hear that! Thank you for watching!
This was a really helpful video. Thank you so much! I was able to replace mine by myself.
Nice video ! I would still put (new) teflon tape on the discharge pipe connection, make it easier to remove the next time.
I have one drip every thirty seconds coming from my hot water tank. Thank you for the how to videos. Best how to video on how to do this. My directional pipe goes through the wall so I'll have to cut it so I can turn it.
Extremely helpful and comprehensive.
Happy to hear that! :) Thank you for commenting!
You did a very good job with this video.
Thank you I will be doing this tomorrow I hope it goes smoothly
Good luck! :)
Somewhat scary to do it like that. But you are a cool master, man. You did it like a piece of cake. Great!
very help full and the best detail!!! THANKS
Sunday night, leak coming from the PRV, thanks for the great info!
Glad I could help! Thank you for commenting!
A very enjoyable instructional video indeed. Thanks
Happy to hear that! Thank you for commenting! :)
Helpful video. Thanks. I will have the opportunity to give this a whirl in the next few days.
Glad you found it helpful, good luck! :)
Wow you are the hombre.. thx you in advance!! I saved a tremendously amount of money & only paid $14.95 for part!!
Awesome! Glad to hear that! Thank you for commenting!
FYI your sediment trap is installed incorrectly , I know you didn't do it. Just saying ! A trick for for TMP valves that won't stop after opening is to tap them with a wrench , it either stops or gets worse. Great videos !
My heater is only 3 weeks old. Property Management has been here ever other day sucking water from the drain pan. They said it's the pressure relief valve but I think it needs an expansion tank.
Great and easy to understand video, many thanks!
yeah, I check mine every couple of months. I had a plumber come and check the wall furnace for carbon monoxide and he said he’ll check the hot water and he wanted to replace the pressure relief valve for $450. I said “no there is no problem with it because I check it”.
Great video! Very helpful, you saved me a lot of money ! Thanks for sharing! God bless!
Glad I could help! Thank you for commenting!
Fantastic content... very thorough... and some great tips... thank you.
Saved me hundreds of dollars, Thank you!!!!
Thank you for your videos! It helps so much!
Thank you so much for clear explanation of water heater safety valve assembly function. I have exactly same problem cup of water after few days at bottom. I was very afraid to drain from bottom valve which is normal for those who flush there water heater for longevity but since I have unit in basement don’t know how to get ride of couple gallon water. I guess will have go upstairs and discard in a bucket. Pulling that safety valve was really nervous 😬 but if I can stop water would help. Do you still think my hot water heater is going bad? Everyone I spoke to says once you see water at bottom means time to replace but no one willing to help do what you just did since it’s a small job.
14k Views, and only 376 likes.. Seems like 13,624 people are not thankful for this great video..
Lol, thanks Stephan! Hopefully they found the video helpful nonetheless :)
Looks like you forgot to turn your gas valve from Pilot! I like the video.
Is that thread protector on gas wall upstream of union? I don’t think it’s coupling 😳 but maybe i am wrong. It’s to smooth outside to be coupling.
very impressive video....but where tht stem gthers when tnk is filled with wter i guess these is no spce for tht ? plese nswer
absolutely outstanding video thank you
You're welcome! Thank you for watching and commenting!
Was there any pressure by taking out the old and putting in the new valve? I thought about doing on my boiler which has around 12 PSI. Flushing my boiler is a little bit tricky with the air getting in the system, so that is why I'm thinking about it.
You are a genius sir.
Thank you :) Glad you liked the video!
Very helpful and simple way Thank you very much.
You're welcome! Thank you for commenting!
Super great video. My valve thoiugh is so tight it won't budge. I don't want to crack it. I hate to call a plumber. Any tip to try to get it off.
Great detailed video.
Thank you for commenting! Glad you liked the video!
Great video! Thank you! Is the method working the same for gas space heater’s temperature relief valve replacement?
Awesome tutorial thanks!
Awwww do you visit your water heater every evening? That’s nice what a relationship, you both keep each other warm!!!🥶🥵😱🤪🤪🤪
It's called knowledge. Jay is Excellent within his craft.
very helpful and instructive
Great video. I followed method 1 and had no issues until I got to step 6. I can't seem to remove the valve. I'm using a crescent wrench, but it's not budging at all. Any suggestions?
If you have a mallet, try hitting the wrench (not full power, just repetitive firm hits) and that will usually break it free.
Got it off and installed the new valve. Thanks so much! Do you recommend testing the valve after everything is done?
@@PBM-ed4dc Glad to hear that! I never test new ones, why create a chance for a leak? :)
Unfortunately a few hours later it was leaking again. Is it possible that I didn't tighten it enough or could it be a problem with the expansion tank? (I did not test it, per your advice.)
If the new one is leaking again, that likely does mean that there's a problem with the expansion tank then.
I got a ice machine, but every night when we close the door it stop works . I think was HgA , so the hot water comes in ,I was think if was this .. Cuz I never pull it , and it been 3 yrs....
Excellent educational video. ...thanks man
Glad you liked it! Thank you for commenting!
Excellent Video! Thanks.
very nicely done. thank you for sharing
Good video thanks! How do you know if the valve is a short or long one prior to swapping it out?
Usually it is easy to just visually see which one it is. If you look in my description, there is a link to the long shank and short shank that you can look at for an example. If you are not sure though, I would go with a long shank. You can replace a short with a long but you cannot replace a long with a short ;) I know techs that only carry long shank valves on their trucks and replace everything with the long ones.
Thank you for a great descriptive video.
Glad you liked it! Thank you for commenting!
Mine was doing the same thing, watched your video, replaced the valve, and the new one is still popping, or leaking. Bucket underneath drain pipe. Probably about 1 litre since last night. I think it's popping because when I first installed it, it was leaking, I cycled the valve a few times, and it seated. No leaking, or drips, but kept the bucket underneath as a precaution. When I checked it in the morning it wasn't leaking or dripping but had about a litre of water in it. I reduced the heat from where it was when I noticed the problem the first time. The water is not very hot at all, I can keep my hand under it no problem. Any advice would be awesome. Gas hot water tank. I actually think it's the same one you have in the video. Anything else I can try looking at?
Hmmm.. If the water is not too hot, then the only thing left is a water pressure issue.. I found this thread pretty useful before, I think you will get some good info for your problem as well: terrylove.com/forums/index.php?threads/water-heater-t-p-valve-replaced-still-leaking.644/
Thank you. Quick and descriptive
Glad you liked it, thank you for commenting! :)
Very nice job. Thanks!
Glad you liked it! Thank you for commenting!
Thank you, very help full.
Glad to hear it! Thank you for commenting!
Hey I love your video. and also the way you teach about the safety tips, when dealing with a hot water tank. Great info. Quick question for you if I could. I just had a pressure relief valve replaced on my tank about two days ago. and now I'm not getting any hot water in the bathroom, and the water in the bathtub is not turning on. So can you tell me what you think that could be causing that to happen. Thanks.
Great video I change the valve that was leaking with a new one. But after taking a hot shower it leaks again any ideas?
John Cullen you might want to check thermal expansion tank (if you have one). Thermal expansion tank is to absorb water heater pressure and will lengthen life of water heater.
Ch wang you are right that’s what it was.
I didn’t know that at the time I had to get
Professional help. Live and learn lol
I appreciate you!!! Great video! Thank you!!!
what state are you in because the overflow does not go to a drain and there is no pan under the water heater
❤Appreciate this🤞
5:30 " Needs to be VIRAL!"
Well you could of just drained the top portion of the tank, to avoid having to work real fast as the old valve came out. great video's kudos
Yeah.. I could have. Thank you for commenting! :)
Is it within code to have the copper drain terminate there? Doesn't it have to go to the exterior of the building. That's how it is on my house.
So I decided to do some maintenance on my water heater which is no more than 6 months old. Shut off the water supply to the house, opened a faucet, drained the tank, worked the t&p valve. Than after it was emptied I open the municipal water supply to the house, tank is filled up, made sure air was out of the faucets than called it done. Never accounted for the thermal expansion so around 4 hours later the t&p valve goes off in the garage but luckily I was in the living room when it happened & when I walked into my garage water was just gushing out Non-Stop. So I shut off the water supply to the whole house because the ball valve at the tank still allows some water to sep through. Anyways now when I turn on the main water,that little bit of seepage that gets into the tank is enough for water to just keep streaming through the t&p valve... Also there's not much water coming out of out shower now.
Thank you for the video!
You're welcome! Thank you for watching!
Great video....can you still do this if you have an expansion tank?
To be honest, where I live/work, I have yet to see a water heater with an expansion tank (and I've worked on hundreds) so I can't give you a good answer.
You helped me brah thanku
I had a water heater that had the T & P relief valve start leaking after it was 8 years old. I replaced the relief valve but it still kept leaking. There was never an expansion tank installed. I am guessing that at some time a check valve was added from the water supply to prevent the excess pressure going back to the source. So if your T & P relief valve is leaking, your expansion tank if you have one is bad, or you need to add one.
gracias por el video
Glad you liked it :) Thank you for commenting!
Yooo thanks again. Respect, and skills. Thanks.
Glad you liked the video! Thank you for commenting!
Does the discharge pipe for the pressure relief valve have to be routed downward? The reason I ask is we are buying a home and the inspector said this one is routed up and to the side. Could this be dangerous and should I insist owner repair?
By code, the discharge pipe should be routed downward, at least 6 inches from the floor. But if what he means is that the pressure relief valve is on top of the water heater and the pipe comes out to the side and then downwards, then that's fine.