Your shopping cart is empty.

Four year old Weil-McLain Aqua Plus is leaking!

December 2, 2018
last modified: December 2, 2018

I bought a Weil-McLain Aqua Plus Pewter just over four years ago. It has a slow leak from the bottom. Somebody came out and replaced the anode rod and T & P valve. The leak got much better but is still there. Also, it appears to leaking from the pressure release valve now (which it wasn't before). He is going to come back out to look at it, but any ideas? I really don't want to buy a new water heater after just buying this one. I also saw that the Series 1 of this one was discontinued, not sure why. Is there a way to tell which series I have? I know this is a long shot...but hoping somebody has any idea for me. Thank you in advance.

Comments (8)
  • mike_home

    If the tank itself is leaking then there is no repair. Replacing the anode rod will not fix any type of leak. Why was the original pressure relief valve changed if it wasn't leaking? But now the new valve leaks?

    Do you have a date receipt? My advice is to stop spending money on a repair and have the tank replace under the warranty. You will have to pay for installation.

    jillfaherty31 thanked mike_home
  • Jake The Wonderdog

    mike_home is mostly right - if there's a leak in the tank it's not repairable - replace it.

    However, a leaking T&P valve suggests that the problem may be excessive pressure / no expansion tank. If that's the problem then replacing the heater will not solve your problem.

    I'm going to guess you are on city water.

    If you are on city water, your water pressure should be something less than 80psi or you must install a pressure reducing valve. (I like to have it 60-70 psi, no higher).

    Also, in most cases you need an expansion tank on your water heater so that when the water heats up and expands, it has someplace to go. Otherwise it will increase the pressure throughout the plumbing and cause the T&P valve to open.

    If you have excessive pressure you can damage your tank - and void your warranty.

    You can get an inexpensive recording pressure gauge from some hardware or online

    jillfaherty31 thanked Jake The Wonderdog
  • jillfaherty31

    Thank you very much for the information. My understanding is that it not e coverd under warranty because the anode rod was depleted (which seems ridiculous but i don't fully understand it). So I’m responsible to buy a new tank. I have expansion tank but still have really high water pressure (no sure of the psi) and it may need to be replaced. Thank you again.

  • jillfaherty31

    Also I was also wondering why the T&P valve was replaced since it didn’t seem to be leaking but now most of the water is coming from that pipe! I will also buy that pressure gauge to see what mine is out of curiosity.

  • Jake The Wonderdog

    T&P valves usually "leak" because the pressure is too high.

    Sometimes they leak because of sediment under the seal

    You can usually flush out any sediment out of the seal by flipping the lever up ( a lot of water will come out of the pipe) and then releasing it.

  • Jake The Wonderdog

    I just looked up that heater - I wasn't familiar with the brand...

    So does that heater really have a Stainless Steel tank?

    My guess is that was a very expensive water heater. I would fight them on the warranty. The old version was discontinued and the new version doesn't even have an anode.

    Look, they are making up excuses not to make good on this. My guess is that there was a design issue with the series 1 that's why they discontinued it.

    Given that this wasn't a $500 unit from Lowe's I think you need to make a stink until you get a new unit.

    All that said, you need to fix your water pressure issue also, if you have one.

  • mike_home

    The cheapest hot water heater in Home Depot comes with a 6 year warranty. The purpose of the anode is to protect the tank from corrosion. It is not replaced to fix a leak. The pressure relief valve does not need to be changed unless it is leaking.

    Is this a home warranty making these repairs? If it is you need fire them and hire someone else. This repair person either does not know what they are doing, or is fleecing you of a lot of money in my opinion. If you have the original receipt call the manufacturer and ask how you can get the water tank replaced under the warranty.

  • Jake The Wonderdog

    This sounds like a known issue that they are pushing off on the end customer:

    The reasoning is that if you aren't checking your anode every year and it gets depleted, its your fault then if there's corrosion on a given part and it leaks.

    Mike, changing the anode isn't going to fix the leak, but replacing the drywell and/or thermostat and the anode is what is called for in the service bulletin.

    Here's the rest of the story: Get your water PH tested to see why the anode is being eaten up.

    Keep the record of that test.

    Here's the thing: Checking a heater anode every year isn't usual or regular maintenance. I think they have a problem and know it... that's why the Series 2 doesn't have an anode.


    Do follow through on the water pressure testing and let us know.

Need help with a Houzz order? Call us at 1-800-368-4268 (Mon-Sun)