Boiler Replacement Cost in Washington

Across Washington, homeowners pay $7,500 to $17,100 for boiler replacement. Climate, labor rates and housing age all move the price. In Washington's cities, the median home dates to about 1983.

Boiler Replacement Prices in Washington Cities

City	Estimate	Heating / cooling degree days
Seattle	$8,200 to $18,500	4,482 / 210
Spokane	$6,200 to $14,100	6,018 / 506
Tacoma	$6,500 to $14,800	4,332 / 211
Vancouver	$6,400 to $14,500	4,400 / 399
Bellevue	$8,200 to $18,500	4,482 / 210

From 2020 through 2025, NOAA recorded 830 winter storm and ice events, 204 heat events, 25 extreme cold events and 37 hail reports in Washington. Those are the days when emergency HVAC calls pile up.

When Replacement Makes Sense

The boiler is 20 to 30 years old or more
Leaks, rust, or pressure that keeps dropping
Some radiators stay cold
Fuel bills keep going up
The pilot or ignition keeps failing

What Moves the Price

Condensing or non-condensing boiler
A combi boiler that also makes your hot water
Fuel type: gas, oil or propane
A new chimney liner or venting
Pumps, zone valves and the piping around the boiler

Common Questions

How long does a boiler last?

A cast-iron boiler can last 25 to 35 years. A modern condensing boiler usually lasts 15 to 20 with yearly service.

Can I replace a boiler with a heat pump?

Yes, with an air-to-water heat pump or a ductless system. The radiators may need upgrading, because heat pumps run cooler water than boilers.

Other HVAC Prices in Washington

Get Free Boiler Replacement Quotes

Tell us where you are and up to three licensed local pros will get in touch. You don't have to hire any of them.