3 services · Seattle
Water heaters in Seattle, WA
Most tank water heaters last about 8 to 12 years. A plumber can often repair a heater that stops making hot water, but a tank that leaks from the bottom has failed and needs to be replaced. Tankless heaters last longer but cost more to install, especially if the gas line or venting has to change.
- Licensed local plumbers
- The problem explained before work starts
- Price agreed before the job begins
Water heaters services in Seattle
Water heater repair
UrgentIf a gas water heater has no hot water, the pilot, thermocouple or gas valve is the usual cause; on an electric heater it's usually an element or thermostat. Those parts are repairable. A tank that leaks from the bottom can't be repaired and needs to be replaced.
Water heater replacement
A leaking tank or a heater past about 10 years old is usually replaced rather than repaired. A proper install includes a permit, correct venting (adjusted for altitude where needed), an expansion tank where required, a drip leg on the gas line and a relief valve discharge pipe.
Tankless water heaters
A tankless water heater heats water as it flows, so it doesn't run out, but it needs a larger gas line, its own venting and a unit rated for your elevation. Installed correctly and descaled regularly, it can outlast a tank heater.
Local conditions
Water heaters in Seattle: what's different
Seattle sits in an active earthquake zone, so water heaters need seismic straps and flexible gas and water connections. Many older installs in Craftsman basements were never strapped properly, and replacement brings them up to current requirements.
Because Seattle's water is soft, tanks fail more often from age and corrosion than from scale. Gas water heater permits come from Public Health – Seattle & King County, which covers plumbing and gas piping inside the city.
- Water and sewer in Seattle
- Seattle Public Utilities provides water, sewer and drainage service.
- Permits in Seattle
- Plumbing and gas piping permits in Seattle are issued by Public Health – Seattle & King County; side sewer permits come from the City of Seattle.
Seattle housing and plumbing
Craftsman homes from the early 1900s in Ballard, Wallingford and Queen Anne often have basements, clay side sewers and galvanized supply.
Other Seattle conditions that affect plumbing
- Side sewer repairs: Seattle homeowners own their side sewer to the main, and older clay lines often need repair.
- Heavy rain: Wet winters test basements, drains and sump pumps.
- Earthquake readiness: Water heater strapping and flexible connections reduce damage risk.
- Rain and steep lots: Seattle's many hills mean side sewers run down steep yards, and long wet seasons saturate soil around older clay pipe.
Neighborhoods and ZIP codes
Plumbers on Thawline cover Seattle and King County, including Ballard, Capitol Hill, Queen Anne, Wallingford, West Seattle, Beacon Hill. ZIP codes: 98101 · 98102 · 98103 · 98104 · 98105 · 98106.
When to call a plumber in Seattle
- No hot water, or hot water that runs out much faster than it used to
- Water pooling around the base of the tank
- Rumbling or popping from the tank
- Rusty or smelly hot water
- A pilot that won't stay lit or a tankless unit showing an error code
- A heater more than 10 years old before it fails
How these problems start and how to choose between repair options is covered in the water heaters guide.
Water heaters questions in Seattle
Does a Seattle water heater need earthquake straps?
How long does a water heater replacement take?
More plumbing in Seattle
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