Yes, we strongly recommend annual water heater maintenance. Water heater maintenance steps depend on the heater type: gas water heater, electric water heater, heat pump water heater, or tankless water heater. Typical water heater maintenance includes safety checks, flushing or descaling the water heater, inspecting the anode rod on the water heater, checking venting for the water heater, testing the T\&P valve on the water heater, and verifying performance so your water heater lasts longer.