Why do you lose hot water in the shower when a tap is turned on elsewhere house?

There are a few reasons why you might lose hot water in the shower when a tap is turned on elsewhere in the house.

* Your water heater might be too small. If your water heater is too small, it might not be able to keep up with the demand for hot water when multiple taps are turned on at the same time. As a result, the hot water in your shower will start to cool down.

* Your water heater might be set too low. If your water heater is set too low, the water in your tank will not be hot enough to reach the shower head. As a result, the water in your shower will feel lukewarm or even cold.

* Your water pipes might be damaged. If your water pipes are damaged, they could be leaking hot water. This could cause the water in your shower to cool down.

* Your shower valve might be faulty. If your shower valve is faulty, it could be mixing hot and cold water incorrectly. This could cause the water in your shower to feel lukewarm or even cold.

If you have lost hot water in your shower, you should first check the size of your water heater and the temperature setting. If your water heater is too small or is set too low, you will need to adjust it. If you suspect that your water pipes are damaged or that your shower valve is faulty, you should call a plumber to take a look.