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Okay, I needed to replace some damaged caulking in this shower stall, and this smell disappeared right after. I'm thinking some mold (or mildew, or any other fun guys that like to grow in shower stalls) gave off this smell when heated. As to why this needed re-caulking: I turn the shower to "hot" and turn it away from the shower stall door, towards the ...


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Background on UK practice In most detached houses in the UK, the hot water tank is primarily heated by hot-water from a gas or oil-fired boiler that also supplies heat to radiators for room heating. The boiler installation has it's own timer to control room-heating and hot-water. The electric immersion heater in the hot-water tank is only a backup system ...


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By shutting off the water main, there is no way for expanded hot water to be relieved by backing into the main. This causes over-pressure and either the pressure relief valve is letting some water out (hopefully into the pan) or the high pressure water is opening a flaw in the tank or a through-hole, such as a heating element, spigot, or water connection. ...


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It turns out it's nothing to do with the water heater. The sump pump's backup battery, which is pretty close to the water heater, exploded inside its container. That's what caused the smell.


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I've never seen a burner assembly area that wasn't rusty, H2O is a byproduct of combustion. Things to consider: is the exhaust vent in good condition, is the TPR valve not leaking and in working order? Provided it's not in a location where a catastrophic leak would cause damage, ride it out. That being said, 12 years is getting towards the end of its life. ...



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