Hot water at cold side all faucets

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ben1111

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Hello,

I have a home in Chicago that has hot water to all faucets on cold side. There are Grohe thermostatic valves at all showers (4). Only recent work was a new water heater 3 months ago. I am at a loss any help would be appriciated! Thanks in advance!

Ben
 
Were they normal at some point? If just one of those faucets was failing there could be a potential cross connection. I have seen a couple of occassions where this has happened, but it has usually been with a cheap brand faucet.
 
Or more likely eather the water heater was hook up wrong i have seen even professional

plumbers do this !

Or you could be missing the dip tube ?

If this problem started about same time as wtr/htr was changed out that is where you

need to start looking !
 
Reversing the connections to a water heater does NOT change the hot/cold orientation of the faucets. ALL it does is reduce the amount of hot water available. Changing hot to cold, and vice versa, requires a piping change somewhere.
 
Do you have any kind of recirulating system? A failed check valve or improperly installed system could be a problem. If you have a retrofit recir, then warm to hot at the cold tap is a normal side effect. If you run a cold tap for a few minutes, does it turn cold, or stay hot?
 
Thanks for the replies. There is not a recirc line, and the water heater was replaced 3 months ago and worked fine untill three days ago. I think that the check valves in one of the Grohe thermostatic mixing valve hav gone bad allowing the water to pass? They are all about 4 years old. I have read that the washing machine selonoid gould also be bad. I will look further into this, and hape to find a resolution to it.

The water will eventually get "cold", but stays warm for a while!
 
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