Water Heater Pressure Relief Valve Leaking
LESLIE: Michael in North Carolina, you’ve got The Money Pit. How can we help you today?
MICHAEL: We have a hot-water heater in our garage on like an elevated plateau. And we noticed the other day, there was a slight leak underneath it but it looked like it might have been coming from a PVC-type tube coming from the top of our water heater. And it’s the length of the water heater. It’s a tube. And we’ve never seen water under that area before and we now notice some of that. So I wasn’t sure why – if it was a sweating situation or what – some type of relief valve, maybe, or something like that. But I’m not sure why water would have been there.
TOM: Yeah, that’s exactly what it is. It’s a temperature-and-pressure relief valve. It’s mounted on the side of the water heater. It’s designed to open up if the water heater develops too much pressure, as a safety mechanism.
However, they frequently wear and leak. So, I’m going to tell you what you can try to do but I’m also going to warn you. There’s a lever on the side of that and sometimes you get a little bit of a debris that’s stuck inside that temperature-and-pressure valve. When you pull the lever, it’ll shoot some water out that tube. You want to make sure you have a bucket under it. Just two or three times; it’ll kind of blast some hot water out of there.
However, the warning is that sometimes, once you do that, the valve never sits back properly and it ends up leaking worse. So it’s possible you could make it worse by doing this but that’s worth trying. If you just want to leave a bucket under it and monitor it for a little while – how old is this water heater?
MICHAEL: About 1990, 1998.
TOM: Oh. Oh, well, you know what? You’re due for a new one. So, 1998 – I wouldn’t wait too much longer before I replace that because let’s face it, it’s about, what, 15 years old now? And so a water heater that gets past 10 is well on its way to needing – to the end of its useful life.
So, I would – you could monitor it, stick a bucket under there, keep an eye on it. But I think it’s about time to think about replacing. It’s not an emergency replacement, so you’ve got some time to shop around. One of the problems with water heaters is once they do leak, they usually have to be done immediately and people get taken advantage of because they need it today. But you’re not in that situation, Michael, so you could take some time and shop around and find the one – the contractor – that you want. But 15-year-old water heater, you might want to think about replacing it.
MICHAEL: Alright, sir. I appreciate that very much.
TOM: Good luck with that project. Thanks so much for calling us at 888-MONEY-PIT.