Gas or electric? Gas, the most common problem is the thermocouple being bad. If you have a pilot light that is on but the heater will not light, that is probably the problem. Easy enough to fix. Electric, check the breaker first. It they are on, it's probably one of the heating elements burned out. Probably the top one, but it can be either. These are also easy enough to change.
It's called water heater. There isn't a reason to heat hot water
Have you turned the control from Pilot to On? Have you increased the temperature setting?
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.
Because heat rises - the top of the water heater will always be hotter than the bottom.
Because hot water heater breaker has tripped, or hot water heater has failed.
More than likely you will not have heat being the water wont be circulating through the heater core , When the hot water passes through the heater coil the air passing through the heater coil makes heat blow out the vents when you have selected a heat setting on your controls.
It's called water heater. There isn't a reason to heat hot water
The time it takes for a hot water heater to heat up can vary depending on the size and type of the heater. On average, it typically takes about 1-2 hours for a hot water heater to heat up a full tank of water.
A hot water heater typically takes about 30 minutes to 1 hour to heat up and provide hot water.
A hot water heater typically takes about 30 minutes to 1 hour to heat up and provide hot water.
A hot water heater typically takes about 1 to 2 hours to heat up the water to the desired temperature.
A hot water heater typically takes about 1 to 2 hours to heat up and provide hot water for use in a household.
A water heater typically takes about 30 minutes to 1 hour to heat up and provide hot water, depending on the size and type of the heater.
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.
A hot water heater typically takes about 1 to 2 hours to heat up after installation.
Electric hot water heater is used to heat cold water for use in winters. Electric hot water heaters heat water faster than the ones which consume fire in order to heat water.
The most efficient electric hot water heater available on the market is the heat pump water heater.