What do furnace replacement permits in Seattle show?
In Seattle, the middle half of furnace replacement permit values runs from $5,460 to $8,380, with a median of $6,640. That is from 5,225 permits issued October 2023 to October 2026, adjusted to today's dollars. Seattle is the only West city in our data for this job, so the regional range is the same.
Reviewed by Matt Kovalik, licensed Minnesota journeyworker electrician. License AJ703617 (verify). Updated October 2026.
Furnace replacement checker
Fair.
Your quote sits in the middle half of what these permits show.
What 5,225 permits in Seattle show.
Middle half: $5,460 to $8,380.
Across regions, the median permit value runs from $4,270 in Cleveland to $6,640 in Seattle.
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1,517 permits in the tallest bar
Permits in each value band
| Permit value | Permits |
|---|---|
| under $2,800 | 216 |
| $2,800 to $4,100 | 295 |
| $4,100 to $5,400 | 613 |
| $5,400 to $6,700 | 1,517 |
| $6,700 to $8,000 | 1,095 |
| $8,000 to $9,300 | 750 |
| $9,300 to $10,600 | 327 |
| $10,600 to $11,900 | 134 |
| $11,900 to $13,200 | 97 |
| $13,200 to $14,500 | 44 |
| $14,500 to $15,800 | 23 |
| $15,800 and up | 114 |
- 2023$5,640591 permits
- 2024$6,6101,716 permits
- 2025$6,8501,720 permits
- 2026$6,6901,198 permits
Only years with enough permits for a stable median are shown. Values are adjusted to today's dollars.
Seattle is the only West city in our data for this job, so its range is the West range.
Questions to ask before you sign
Matt's list for this job.
- How did you calculate the heating needs of this house instead of just matching the old furnace?Matching the old furnace can carry an old sizing mistake into the new installation.
- What exact equipment and thermostat are included, and why do they fit this house?The proposed controls and airflow matter to daily comfort as much as the efficiency rating.
- Are the ducts, filter arrangement, and return airflow suitable for the furnace you are proposing?Restricted returns or undersized ducts can hold back a furnace that otherwise fits the house.
- What venting and combustion-air changes are included, and what happens to any appliance sharing the old vent?When the furnace leaves a shared vent, the water heater may need venting changes of its own.
- Where will condensate drain, and how will you protect that route from freezing or backing up?A poorly planned condensate route can stop the heat or put water where it does not belong.
- What gas and electrical work, permits, and removal are covered, and how long will we be without heat?Gas work, electrical changes, and the time without heat belong alongside the equipment in the proposal.
- What startup measurements will you record, and what labor warranty and maintenance conditions apply?Recorded gas input, temperature rise, and airflow show how the unit was set up. Warranty terms explain what happens afterward.
Also worth asking
- Can you list the exact equipment and all installation changes in the written bid?Model names leave out the labor and connection changes needed to put that equipment into service.
- What does the labor warranty cover, and what maintenance or registration is required?Parts coverage may exclude troubleshooting and return visits, and missed maintenance or registration can affect your coverage.
Questions people ask
How wide is the range in Seattle?
The middle half of furnace replacement permits in Seattle runs from $5,460 to $8,380, and a tenth of permits sit below $4,130 while a tenth sit above $10,090. A quote outside the middle half is not wrong on its own, but it should come with a reason you can see in the scope, so compare it line by line.
Have Seattle permit values changed by year?
Among years with enough permits to report, the median furnace replacement permit value in Seattle was $5,640 in 2023 and $6,690 in 2026, after adjusting every value to today's dollars. We show only years with enough permits for a stable median, and we do not read a cause into the change.
Source and calibration
Seattle passed the city calibration check: its median AC replacement permit value, $8,880, is within 20% of the survey reference for its region.