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Question DetailsAsked on 1/6/2018

No cold water coming from any taps when i turn hot water on hot water comes from both in all lines and toilot will

I have to turn both hot and cold on to refill toilet no cold water at all only hot is coming out

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1 Answer


There are links to some similar situation questions below - but first thing I would be looking for if you are having unusually cold weather or heating issues is a frozen cold water pipe - somewhere AFTER (downstream) of where the cold water pipe to the water heater comes off the cold waterline, but BEFORE (upstream) of all faucets which do not have cold water.

The reason turning hot and cold both on (assuming faucets with both hot and cold feeding together into a single pipe before exiting the spigot, or a single-handled faucet) is opening both at the same time allows hot water to flow backwards into and fill the cold pipes - so having just any one faucet opened up to hot and cold both would supply (albeit likely at a lower flow rate) warm/hot water from all cold faucets.

It is possible you might be able to thaw the pipe by turning house heat up (just don't make the furnace work continuously). Running hot water through the cold pipe "in reverse" per above, having the hot water flow out of the various faucets for say about 5 minutes at each faucet, might heat the cold pipe enough to thaw it out - then again, maybe not. Depends on how exposed to the cold the frozen part of the pipe it.

Answered 2 years ago by LCD

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