I run out of hot water so fast in my shower, I have to take a very short shower.
Why do I run out of Hot water after only five minutes in the shower? There are a few deferent reasons why you may run out of hot water too fast. The first thing To consider is, did you or some one else in the house use it up, by running the washing machine, or the dishwasher, or taking a shower in another bathroom, or taking one just before you? If this is the only time you have a problem with hot water, you may simply need a larger water heater or one wit a higher output. In some states or towns, plumbers install mixing valves on the water line going to the toilets to prevent the toilet tanks from sweating (they allow a little hot water to mix with the cold to raise the temperature of the water in the toilet tank) if you have one of these valves installed in your home, you use some hot water every time you flush. If you have a toilet that runs, you will use a large amount of hot water. and may not have enough left to shower. See Why do I have Hot water in my Toilet . Click on image to see larger image.
Hot water coils on boilers: A common problem
people have with this type of hot water maker is, if they take a shower they
have enough hot water, but if they want to fill up the tub, there is not enough
hot water. The reason for this is the coil is designed to heat the water at a
slow flow rate, most shower heads and other faucets have built in flow
restrictors but the tub spout does not. to fill a tub when you have this
problem, only turn on the hot water half way.
They clog up from hard water and the flow or
pressure is never good enough.
On most electric water heaters if the upper element or thermostat burn out
you will have no hot water at all.
For a full explanation of how
an electric water heater works
and for troubleshooting an
electric water heater please