Any potable supply
In reality, although the water heater can use a supply from any potable source, it is always better to have its' inlet connected to a water tank.
There are a number of advantages-
1. There will be less water pressure on the inlet pipe of the water-heater. This is important for the warranty, as 99% of warranties insist that this is so.
2. The water in a storage tank will be invariably warmer than that in the pipes, therefore the source inout for the heater is warmer, making the unit more efficient.
3. Finally, should there be a water disruption, you will always at least have a supply of water from the tank, at least for showers.
Point of use CHEAPER to use in most cases
it heats water
any source
it heats water
It's because "hot-water" is a compound adjective, modifying "heater". It's not for heating water, it's for heating a house with hot water. There are many types of heaters that heat water, but only a hot-water heater is used for providing heated water for domestic use. A hydronic boiler also heats water, but it's only for use in radiators.The name "Hot Water Heater" is completely wrong for any use. There is no need to heat hot water. IT has always been "water heater". The term hot water heater has just been used for years because people don't realize the difference. It has always been WATER HEATER.The first answer is jibberish and makes no practical sense at all.
Yep. The water heater will warm up the area in which the water heater is located. You will find out later if it is sufficient heating.
Yes, some water heaters have magnets in them. Not every water heater does, but the ones that do have magnets are great to use for water treatment reasons.
Domestic coil in boiler better than electric water heater.
Take shorter showers, or get a tankless, "on-demand" water heater that heats the water as you use it.
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 However, if water is drawn from the hot faucet- even for a few seconds- hot water IS withdrawn from the heater, and fresh cold water drawn in to be heated- even if the hot water did not make it all the way through the pipe to the faucet- and the water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.
Never
Of course a water heater thermostat would be defective as water heaters / hydronic boilers would use an Aqua Stat