Cities / Washington / Seattle
Mini-Split Cost in Seattle, WA (2026)
A one-zone mini-split, installed, before rebates
$4,500to$10,500
From a public baseline. How prices are made.
The low and the high are the spread of equipment and labor in the public baseline for a one-zone mini-split in 2026.
Washington Rebates in 2026
No provider we track pays a mini-split rebate in Seattle today. The IRS allows the credit for property placed in service before December 31, 2025. A heat pump installed in 2026 gets no federal credit.
Every Program a Seattle Homeowner Can Use
- Federal 25C credit gives no credit for a 2026 install. Ended.
- Heating rebates and offers pay up to $4,000 per residence. Open now.
- MIDSTREAM HVAC+ PROGRAM pays up to $600 per outdoor system. Open now.
- Smart Thermostat Rebate pays up to $175 per household. Open now.
- Smart Thermostat Rebates pays up to $50 per unit. Open now.
What It Costs
All 7 systems, low to high
| System | Low | Typical | High | Range drawn |
|---|---|---|---|---|
| Heat pump, ducted | ||||
| 2-ton heat pump 15 SEER | $6,500 | $11,750 | $17,000 | |
| 3-ton heat pump 15 SEER | $7,450 | $13,350 | $19,250 | |
| 4-ton heat pump 15 SEER | $8,400 | $14,950 | $21,500 | |
| 5-ton heat pump 15 SEER | $9,400 | $16,550 | $23,700 | |
| Other systems | ||||
| Central AC only, 3 ton 16 SEER | $4,150 | $6,900 | $9,700 | |
| Gas furnace only, 80,000 BTU 95% AFUE | $3,750 | $4,050 | $4,800 | |
| Mini-split, one zone, 12,000 BTU 20 SEER | $4,500 | $7,500 | $10,500 | |
Sources today: public baseline: NREL National Residential Efficiency Measures Database, 2024 release (read via hvacbase.org, 2026-10-19). Two more sources join as they arrive: Verified contractor ranges and homeowner-reported quotes. 2023 dollars, national. No metro factor is applied in this version. This city publishes no machine-readable permit feed, so no permit facts print. How prices are made.
Common Questions
How much does a one-zone mini-split cost installed in Seattle?
The installed range is $4,500 to $10,500, with a typical price of $7,500. This is the national public baseline in 2023 dollars.
Does any provider pay a mini-split rebate in Seattle?
No provider we track pays one in Seattle today. This page tracks 5 programs for the city: Federal 25C credit, Heating rebates and offers, MIDSTREAM HVAC+ PROGRAM, Smart Thermostat Rebate, Smart Thermostat Rebates.
Is there a federal tax credit for a one-zone mini-split in 2026?
The IRS allows the credit for property placed in service before December 31, 2025. A heat pump installed in 2026 gets no federal credit.
What do the other systems cost in Seattle?
A gas furnace runs $3,750 to $4,800, typical $4,050. A 3-ton central air conditioner runs $4,150 to $9,700, typical $6,900. A 3-ton heat pump runs $7,450 to $19,250, typical $13,350. Each range is installed, before rebates.
What size and efficiency does the mini-split range assume?
The range is for the table row "Mini-split, one zone, 12,000 BTU" at 20 SEER. The table on this page lists 7 systems from low to high, each with its own size and efficiency.
Contractors in Seattle
35 Listed contractors in Seattle hold an active license on the state roster. A Verified contractor is one that published its terms here. Contractors in Seattle.
Range quarter 2026-Q4, updated October 22, 2026. Last change: First pages: furnace, AC and heat pump ranges from the public baseline, and the state programs read from each provider. Changelog. Source page: https://hvacvisit.com/washington/seattle/mini-split-cost. Cite a range with a link to the page it is on. Do not republish a page, a table or a dataset in full.