Tankless Water Heaters in Seattle, WA
Endless hot water, up to a third less energy, and a wall-mounted unit that frees up a closet.
Older Seattle housing stock near the bridges — Madison Park, Laurelhurst, Mount Baker — often pairs a tankless water heater swap with gas line and venting upgrades, since these homes' original plumbing wasn't built with a tankless unit's higher flow demand in mind.
Symptoms we see every week in Seattle
- Running out of hot water mid-shower
- Rising gas bills from a constantly firing tank
- A tank unit nearing 12–15 years of age
- Rusty or discolored hot water
Spec'd to your Seattle home
We size every system to your actual demand — not a one-size guess. Here's what a typical tankless water heaters includes:
| Flow rate | Up to 11 GPM |
|---|---|
| Efficiency | 0.96 UEF (condensing) |
| Lifespan | 20+ years |
| Fuel | Natural gas or propane |
Tankless Water Heaters in Seattle: what's different here
Older Seattle housing stock means galvanized supply lines and clay or cast-iron sewer laterals are still common. Older Seattle homes in Madison Park often have gas lines and venting sized for a tank, so a tankless install may need a larger gas line and new venting. We check both before we quote.
Permits and inspections
Switching to tankless needs a plumbing permit, and new gas lines or venting are part of the inspection. Mechanical and plumbing permits in Seattle go through Seattle Department of Construction and Inspections (SDCI). When the work needs a permit, we pull it, schedule the inspection and leave you the paperwork.
Utilities
Most Seattle homes are on city water and sewer, so the main shutoff and sewer cleanout are usually easy to find.
Where we work in Seattle
Our job records show more than 290 completed jobs for Seattle customers across ZIP codes 98122, 98105, 98103, 98107, 98118, 98115, 98144, 98125. We take tankless water heaters calls in Madison Park, Laurelhurst, Windermere, Wedgwood, Mount Baker and the rest of Seattle.
Work we stand behind
10-year parts & labor warranty, free annual descaling for 3 years, and a 30-day satisfaction rework.
Book this serviceStraight answers for homeowners in Seattle.
Who issues the permit for tankless water heaters in Seattle?
Mechanical and plumbing permits in Seattle go through Seattle Department of Construction and Inspections (SDCI). For tankless water heaters, we apply for the permit, book the inspection, meet the inspector on site, and give you the final sign-off for your records.
Is tankless worth it for a Seattle home?
For many Seattle families, yes: endless hot water and a unit that lasts about twice as long as a tank. It costs more upfront and may need gas or venting changes, so we give written quotes for both tank and tankless.
Which Seattle neighborhoods do you cover?
Our job records show more than 290 completed jobs for Seattle customers across ZIP codes 98122, 98105, 98103, 98107, 98118, 98115, 98144, 98125. We take tankless water heaters calls in Madison Park, Laurelhurst, Windermere, Wedgwood, Mount Baker and the rest of Seattle. Call (425) 615-5000 for same-day service.
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