You will get warm instead of hot water. There is a tube inside the tank on the cold side that goes to the bottom of the tank and the hot comes directly from the top. Reverse them and you are going to get the cold water that settles to the bottom of the tank. It will not hurt the tank or anything, it just makes for poor hot water.
Well if water is too cold, pipes will contract and if water is too hot, the pipes will expand.
The water pipes are full of cold water. All that cold water has to be flushed from the pipes before the hot water from the tank reaches your faucet.
some times when temperatures go really cold in winters it causes water to freeze and as the water in pipes starts to freeze, the expansion that takes place when water freezes causes pipes to break
Cold for the calcium carbonate is disolved by hot water.
Why is the second paragraph a contradiction of the first? If hot water pipes 'Absolutely' do not freeze faster than cold water pipes then why the comment about the cold water pipes having a larger diameter which causes them to freeze at a slower rate than the smaller hot water pipes? Also, the word then in the last line should be thanand there should be an a between usually and larger. And, piping should be changed to pipe.
They are not usually smaller - some amateur plumbed yours.
Cold water pipes would be the sweaty ones.
Your hot water pipes have rust in them.
if the pipes are warm or hot at the time the coldwater passes though them, it can cause the pipes to cool and contract
Water pipes may be covered with foam rubber to stop condensation dripping from the surface of cold water pipes in warm and damp climates, and to insulate hot water pipes so the water in them does not cool while flowing from the hot water tank to the faucet,
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Water expands when it freezes. If water pipes are allowed to freeze then the pressure of the expanding ice inside them will fracture the pipes. Then when the temperature rises so that the ice melts, the pipes will leak - with resulting damage.