Boiler Installation cost in Seattle, WA
Seattle homeowners typically pay $5,750 – $14,100 for boiler installation. Local labor and materials price 28% above the national average.
Seattle average
$9,900
Typical low
$5,750
Typical high
$14,100
Per system
$5,750 – $14,100
Sample ZIP
98101
What drives Seattle pricing
Local labor
Seattle trade labor is among the most expensive in the country and books months ahead.
Permits & code
SDCI permits and inspections are required for most exterior and structural work.
Climate & conditions
Persistent rain demands drainage detailing, flashing and rot-resistant materials.
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Estimated project cost
$11,685 – $16,055
Most homeowners pay around $13,870
Compare quality / material level
Cost by material in Seattle
Installed Seattle pricing per system.
| Option | Installed cost |
|---|---|
| Standard efficiency gas boiler | $6,150 – $8,450 |
| High-efficiency condensing boiler | $8,450 – $11,100 |
| Combi boiler with domestic hot water | $11,100 – $14,400 |
| Cast iron / high-capacity boiler | $14,400 – $19,800 |
Where the money goes in Seattle
A typical $9,900 Seattle project, broken down by line item.
- Labor0.45% · $45
- Materials0.38% · $38
- Permits & inspections0.05% · $5
- Overhead & profit0.12% · $12
Common add-ons
Extras that show up on Seattle quotes but rarely in the headline price.
New circulator pumps
Chimney liner
Zone valves and controls
Old boiler removal
Ways to save in Seattle
- Look for high-efficiency rebates from your gas utility.
- Replace in summer when boiler installers have open schedules.
- Collect three written bids on an identical scope — spreads of 20–40% are normal.
- Book in the off-season and stay flexible on the start date to save 5–15%.
- Bundle nearby work into one mobilization so you only pay setup and travel once.
- Ask what the contractor would change to cut 10% without hurting durability.
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