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Electric water heaters place all their demand on the heating elements and the anode rod. Sediment builds against the lower element first, making it work harder to hold temperature, and the anode rod corrodes in the process of protecting the tank wall. Electricity heats more occupied homes in San Juan County, Washington than any other fuel, at 62.3% (2020-2024 ACS 5-year). A contractor diagnosing a failing unit here checks the lower element before anything else, because that is where wear lands in an electric tank. If the rod is gone, the tank itself starts to pit, and the repair scope changes.

A water heater sitting in housing this old has often been there long enough to show what this region's mineral load actually does to a tank. Half the homes in San Juan County, Washington were built in 1988 or earlier (2020-2024 ACS 5-year). For a contractor opening a unit in stock like this, the first things that settle the repair are the anode rod condition and whether sediment has already cut the tank's effective capacity, not the thermostat or the igniter. Those components fail too, but in a house where the original plumbing connections have calcified around the fittings, the sediment question comes first and changes what the job costs.
The Parts of a Water Heater a Contractor Checks During a Repair

The tank is what most homeowners see first, a large insulated cylinder that sits in a utility closet, basement, or garage and holds water at a set temperature. Attached to it are the heating elements or burner assembly, which do the actual heating, and the thermostat, which tells them when to run. When a water heater fails, a contractor starts here.
The pressure relief valve mounts to the side of the tank and opens automatically if pressure inside climbs too high. The anode rod hangs inside the tank and slows corrosion of the metal walls. Supply and delivery pipes connect at the top, and on gas units a flue runs up through or out of the house to vent combustion gases.
The drawing shows the general layout of a water heater system, and a licensed contractor determines what applies to the specific unit and setup in your home.
Find a contractor in San Juan CountySan Juan County, Washington, by the numbers
54 severe weather events were recorded in San Juan County, Washington between 2015 and 2024.
NOAA National Centers for Environmental Information, Storm Events Database, bulk CSV export, events 2015-01-01 through 2024-12-31.Half the homes in San Juan County, Washington were built in 1988 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesSan Juan County, Washington holds 13,990 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 78.0% of the occupied homes in San Juan County, Washington (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesSevere Weather Events in San Juan County
Extreme weather puts real strain on water heaters, forcing them to work harder and shortening the time before something fails. How much of that pressure your equipment faces depends on what the weather actually does in this part of Washington.
54 severe weather events, 2015–2022. Source: NOAA National Centers for Environmental Information, Storm Events Database.
