Most people want a rough figure before booking, and that’s only sensible. The cost of water heater service depends mainly on the type of unit, the nature of the problem, and how easily the equipment can be accessed. A minor repair stays modest; a full swap costs more once the permit and the removal of the old unit are counted. Since July 1, 2026, Public Health – Seattle & King County has required a plumbing permit for replacement water heaters; most qualify for an over-the-counter permit, while related electrical or gas work may require additional permits.
Before we begin, you will receive an itemized estimate covering parts, labor, and cleanup. The cost of installing a water heater reflects its size, the fuel it runs on, and how much of the old setup has to change. Converting to a tankless system or installing a larger tank generally falls at the higher end of the price range.