True? NO! Sounds like somebody is getting scammed. Replace piping only if necessary.
this question is vast. if no hot water is not coming out the pipes its possible the pipes can be blocked or the valves are blocked. if the temp is not hot, check wiring to the geyser or the element might need to be changed
Copper is used as hot water pipes because the copper will not corrode when the hot water goes through the pipes
Yes you need to shut off the Main water valve. Usually found in the basement or outside the house near the meter. Also you need to shut off the Gas valve located at the water heater, or the Breaker located in the breaker box/ fuse panel. Sometimes the water heater will have its own Switch box, located on the power wire
A tankless and a gas(with a normal tank) water heater both burn gas to heat the water, so they need vents to bring air into the space where they are located, and a venting system for the exhaust. Some considerations for tankless: 1) they require larger gas supply pipes; 2) they can be placed on most walls, but you still need room around them; and 3) they heat the water as it flows through the pipe, so you still have to deal with the cold water which is in the pipe. I mention the last one because many people think that they will immediatley obtain hot water. For your situation, placing the tankless heater on the third floor would require new gas pipes. Commonly gas pipes are 3/4" in a home, and a tankless unit may need 1" at a minimum. Having the water heater on the same level would provide you with hot water sooner. Placing the tankless unit where the hot water storage tank is may require less plumbing, so it could be an easier task. The water will take longer to heat, and you could be wasting energy of the heated water in the pipe. This can be partially resolved by insulating the hot water pipes. Insulating these pipes is a wise idea for efficiency in either location.
yes
You know it by touching and feeling the pipes on the hot water side; if they are hot, there is water running through the pipes and obviously the heater valve is open on hot side.
Heat tape is just for keeping the pipes from freezing, it does not heat the water. That's what the hot water heater is for.
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.
There are a number of ways to do that. 1. Raise the temperature of your water-heater. 2. Insulate your pipes. 3. Buy a bigger (or more efficient) water-heater. ?4. Live alone.?You combine any two of those things..and you'll definitely notice a difference.
Read the label. A gas heater will have three plumbing pipes connected.One is a gas supply. An electric heater will only have two plumbing pipes but it will have an electical conduit or electrical wire feed line.
Because the water heater is downstairs, and the pipes are poorly-insulated.
For the heater core. All cars have them.
Yes install it on the cold water line as close to the heater as possible.
No. The Main is source of water for that as well.
There is rust in the steel pipes of your house, possibly the water heater. Have them looked at soon
My guess is that the hot water heater is installed downstream from a pressure reducer to limit the maximum water pressure that the water heater is exposed to.
If that car has a temp blend door actuator, it could be faulty.