Sounds as if it is stuck. Shut off water supply to it and take apart the handle and cartridge. Take the main internal parts to a Plumbing store and get a replacement (made for all faucets) Then install carefully in reverse order to removal.
If it had been working fine -- then if it is a cartriage type -- replace it --
Yes
If water is only drawn from the cold faucet, then no, the water heater is not involved. However, if water is drawn from the hot faucet- even for a few seconds- hot water IS withdrawn from the heater, and fresh cold water drawn in to be heated- even if the hot water did not make it all the way through the pipe to the faucet- and the water heater will work to heat that fresh cold water.
cold water tub facuet is corroded bye hard water builtup and needs to be replaced. Hot water is okay. Its the right one with the cold water coming out
true, the water is going to get hot either if you use cold or hot water You did not answer my question of if it was "true" or a "myth" that the water had to be from the cold water faucet. From what you did respond to it sounds as if the question I generated means it is a myth that the water "has" to be from the cold water facuet.
That would depend on the ambient temperature and heat losses
its not the co.pper line its the faucet stem or angle stop
Your hot water pipes have rust in them.
Kitchen faucet? If so, the sprayer attaches to the underside of the faucet in the middle.
Yes. If you can attach a y to your cold water line, split it and run cold into both cold and hot Hopkins on the faucet.Yes , by blocking off the supply to the H/W side of the faucet and only connecting the C/W UNLESS it is a temperature or pressure balance type.
Possibly a cross connection
because there no backflow perventer on laves and toilets