The most common problem with water heaters is sediment build-up. Over time, minerals in the water can settle at the bottom of the tank and form a sediment layer. This sediment layer can reduce the efficiency of the heater, cause it to overheat, and eventually lead to failure. To prevent this, it's important to descale your water heater on a regular basis.

The most common problem with water heaters is sediment build-up. This can cause the water heater to work less efficiently and can even lead to a failure. To prevent sediment build-up, it's important to drain the water heater every year. You can do this by attaching a hose to the drain valve at the bottom of the tank and running it outside or into a floor drain. Some people also like to flush their water heater once a year by pouring a gallon of bleach down the drain valve opening. Be sure to follow the manufacturer's instructions for your particular model of water heater.