Why do my water heater elements keep burning out?

If air pockets develop in the tank, often due to a failure to bleed out the tank completely before filling it up, the element may be burning itself out without enough water. As a result, the heating element could be failing faster and more frequently than it should.

What would causes a heating element to burn out?

A sudden voltage increase to the element caused by a power surge from the utility company, or by lightning, can be enough to burn out an element. All heating elements have a voltage rating. Voltages above this rating will burn out the element.

How long should a hot water cylinder element last?

Life expectancy of modern copper or stainless steel cylinders is 20–40 years, but mains pressure glass-lined steel is shorter at 12–20 years.

How do you know if a heating element is bad?

Touch a probe on the multitester to each screw on the element. If you get no reading, or a maximum reading, the element is bad. Elements do have some resistance, so a reading of 10-16 ohms is normal, with higher ohm readings for 3,500 watt elements and lower readings for 5,500 watt elements.

Are upper and lower water heater elements the same?

Upper and lower heating elements are identical, and the temperature is regulated by the upper and lower thermostat and high limit device. Electric water heater elements can be different in size, but the most common is 12″ (300 mm).

Should you replace both water heater elements at the same time?

Both heating elements generally do not work simultaneously. The only way to know which one is working would be to monitor the voltage at each heating element. I recommend replacing both elements since you have to drain the tank to clean flush the sediment out anyway.

How do you tell if a heating element in a water heater is bad?

How can you tell if a heating element is bad?

Inspect the metal wire coil for any breaks in the wire. If the wire is solid and has no breaks in it, the heating element should be good. If the wire has a break in it, the heating element is defective.