Gas vs Electric Water Heater Maintenance

While both styles of heaters hold water in a tank, the way they heat that water creates different maintenance priorities.

Gas Water Heater Maintenance

Gas heaters use a burner at the bottom to heat the tank. This creates two unique issues:

1. The Burner Chamber

Sediment is particularly dangerous for gas heaters because it sits directly on top of the burner. This can cause the bottom of the tank to overheat and weaken.

2. Flue and Venting

You must inspect the venting system annually. Look for signs of “backdrafting” (melted plastic around the cold/hot nipples) and ensure the flue is clear of obstructions like bird nests.

3. Thermopile/Thermocouple

If your pilot light won’t stay lit, you may need to clean or replace the thermocouple.

Electric Water Heater Maintenance

Electric heaters use two submerged heating elements.

1. Element Scale

Scale buildup on electric elements is the #1 cause of failure. In hard water areas, scale can completely encase an element, causing it to burn out.

2. Electrical Connections

Every few years, you should check the wire connections at the thermostat for signs of charring or loose wires. Always turn off the breaker before opening the panels!

3. Thermostat Calibration

If your water is too hot or not hot enough, the thermostats might need adjustment or replacement.

Shared Maintenance

Regardless of the fuel source, both heaters require:

• Annual flushing
• Anode rod inspection every 3 years
• T&P valve testing once a year