Hotels use a recirculating pump. Hot water is always flowing from the hot water heater around a loop of pipe that goes past the bathroom in the hotel room.
Depends on the size of the heater Commerical etc
CPVC is better suited for hot water
I would use hot water conn. on it. Both on cold and hot
The water that is piped in from the city or from your well goes through your water heater and then into the hot water pipes.
It is copper oxidation.
You may have a restriction in your hot water heater exit pipes. There may be corrosion. How old is the house and how old is the hot water heater? What type of pipe is there going out of the hot water heater? You need to know this to fix the problem yourself without hiring a plumber.
There is no vent pipe on top of a hot water heater. Mobile home or not. You must be thinking of something else. The HW tank is only vented by a Pressure Relief Valve vented to the drain.
Probably because it flows through several feet of uninsulated metal pipe to get from the water heater to the faucet. After you're done using hot water and you shut the faucet, all the hot water in that pipe cools quickly, and then, next time you want some hot water, you have to wait for all of that water in the pipe to come through the faucet, before any hot water from the heater reaches you. The cure: Get some foam pipe wrap from any home-improvement store and wrap it around the hot-water pipes. Then when the pipe is full of hot water, it'll take longer for that water to cool off.
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 However, if water is drawn from the hot faucet- even for a few seconds- hot water IS withdrawn from the heater, and fresh cold water drawn in to be heated- even if the hot water did not make it all the way through the pipe to the faucet- and the water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.
It is a water heater, not a hot water heater. There would be little point in using a hot water heater. I assume that is your point.
Yes. It connects to the inside of the tank, where the hot water is. Heat from the hot water will heat the vent pipe by conduction. The top end should be much warmer than the bottom end, near the floor or outlet.