South West Plumbing & Waterheaters, Inc
Heat pump installer working in Seattle.
- Seattle publishes no contractor license list we can check
102 jobs on Seattle permits, 2023 to 2026: 51 heat pump installations, 44 panel upgrades, 6 EV charger installations, 1 solar installation.
What the public records show
From the state's license records and the city's permits, one question at a time.
| Question | Records show | Mark |
|---|---|---|
| Licensed? | Seattle publishes no contractor license list we can checkThat says nothing about this business either way. | Ask them |
| Jobs on record | 102 jobs on Seattle permits, 2023 to 2026: 51 heat pump installations, 44 panel upgrades, 6 EV charger installations, 1 solar installationOur Seattle permit records cover October 2021 to October 2026.Of their 51 heat pump permits, 36 mention ductless or mini-split units, 12 mention a furnace, 3 mention ducts or a ducted system. |
Records: the state Department of Labor and Industries and City of Seattle permits.
Cost and timing
All heat pump jobs in Seattle: $6,000 to $15,000
Half of 25,747 city permits list an amount in this range. Permit amounts are often lower than what you pay.
- Ductless mini-splits in Seattle: $6,000 to $15,000 (10,687 permits)
- Ducted heat pumps in Seattle: $9,000 to $22,000 (591 permits)
How to read this range
Contractors write a job value on the permit form, and the city uses it to set the permit fee. It is not the contract price, and it is often lower than what you pay. A quarter of the permits list less than this range, and a quarter list more. Use it to see if a quote is in the normal range.
Rebates
Seattle's Clean Heat Program: $2,000 off for most homes that switch from oil heat to a Mitsubishi Electric heat pump. Households earning 81% to 150% of the area median income get $4,000 more, $6,000 in all. The install must be finished by May 30, 2027, by one of the program's participating contractors.
As the city's page read in October 2026. Check it for changes.
Permit value (not a price)
Their typical permit lists $15,552 (half list more, half less)
That is the figure written on the permit form, which can be far from what you pay. What heat pump jobs cost in Seattle.
Get 2 or 3 written quotes.
Permit timeline
Across Seattle, a heat pump permit stays open about 87 days, from permit to final inspection
This is not how long the crew works at your home: most of it is waiting for the inspection. Ask them how many days the work takes. The permit itself is usually issued the same day. How long heat pump jobs take.
Track record
40 jobs in the last 12 months, down from 46 the year before
Where they work most
- 9811810 jobs
- 981449 jobs
- 981468 jobs
- 981038 jobs
- 981267 jobs
Jobs by kind of work
Latest jobs
Permit values are what the contractor wrote on the permit form, not what the owner paid.
| Date | Work | ZIP | On the permit form |
|---|---|---|---|
| Sep 15, 2026 | Heat pump | 98199 | $12,000 |
| Sep 8, 2026 | Heat pumpInstalling single zone mini split | 98117 | $9,912 |
| Aug 31, 2026 | Heat pump90 for 90 furnace swap and swapping out AC for a heat pump | 98144 | $17,732 |
| Aug 24, 2026 | Heat pumpSwapping out the air handler for a heat pump | 98126 | $20,463 |
| Aug 24, 2026 | Heat pump | 98133 | $18,596 |
| Aug 20, 2026 | Heat pumpAdding electric furnace and heat pump | 98102 | $18,437 |
| Aug 18, 2026 | Heat pumpInstalling single zone mini split | 98106 | $7,953 |
| Jul 28, 2026 | Heat pump90 for 90 furnace swap and swapping AC for a heat pump | 98146 | $21,658 |
| Jul 27, 2026 | Heat pumpInstall a 2-zone mini-split (air handler only) in townhome, Unit 6662-D, subject to field… | 98108 | $10,102 |
| Jul 6, 2026 | Heat pumpInstalling single zone ducted mini split | 98103 | $15,552 |
| Jun 29, 2026 | Heat pump4 zone mini split | 98122 | $30,384 |
| Jun 29, 2026 | Heat pumpInstalling ducted mini split | 98115 | $40,000 |
| Jun 17, 2026 | Heat pump | 98144 | $10,102 |
| Jun 16, 2026 | Heat pump90 for 90 and heat pump for heat pump swap like for like | 98118 | $19,727 |
| Jun 15, 2026 | Heat pump90 for 90 like for like furnace swap and a heat pump swap | 98118 | $8,000 |
| Jun 11, 2026 | Heat pumpInstalling mini split 1 zone | 98178 | $5,830 |
| Jun 11, 2026 | Heat pumpFour zone mini split | 98144 | $17,932 |
| Jun 1, 2026 | Heat pump2 zone mini split swap | 98108 | $10,102 |
| May 29, 2026 | Heat pump80 for 80 furnace swap like for like, and adding a heat pump | 98122 | $20,683 |
| May 28, 2026 | Heat pumpInstall a 2-zone mini-split heat pump system in townhouse, Unit #3467, subject to field inspection,… | 98199 | $10,000 |
| May 21, 2026 | Heat pumpReplacing the furnace and adding a heat pump | 98102 | $18,437 |
| May 21, 2026 | Heat pumpAdding 1 zone mini split | 98118 | $9,991 |
| May 20, 2026 | Heat pumpReplacing air handler to heat pump | 98118 | $19,528 |
| May 20, 2026 | Heat pumpReplacing 3-zone mini split | 98116 | $13,760 |
| Apr 20, 2026 | Heat pumpGas furnace swap, heat pump swap, low voltage wiring for thermostat | 98125 | $12,000 |
| Mar 23, 2026 | Heat pumpRemove and replace air handler, adding heat pump to HVAC system, low voltage wiring for tstat | 98136 | $17,000 |
| Mar 3, 2026 | Heat pumpAdding 3-zone mini split to home STFI (Subject to Field Inspection) | 98116 | $13,454 |
| Feb 20, 2026 | Heat pump | 98178 | $13,372 |
| Dec 31, 2025 | Panel upgrade200amp service repairs | 98122 | $5,435 |
| Dec 29, 2025 | Heat pump | 98116 | $20,366 |
| Dec 23, 2025 | Panel upgrade | 98112 | $5,264 |
| Dec 4, 2025 | Heat pumpSwapping out 1 T mini split | 98122 | $8,517 |
| Dec 3, 2025 | Heat pump | 98116 | $13,454 |
| Nov 18, 2025 | Panel upgrade | 98146 | $6,040 |
| Nov 6, 2025 | Panel upgrade | 98112 | $6,362 |
| Nov 5, 2025 | Panel upgrade200amp panel change also changing out subpanel | 98133 | $7,047 |
| Nov 4, 2025 | Panel upgrade200amp service change | 98199 | $14,056 |
| Nov 3, 2025 | Panel upgrade200amp panel change adding 100amp subpanel to garage adding 20amp sauna circuit adding 20amp… | 98103 | $12,544 |
| Oct 30, 2025 | Panel upgrade200amp service change - emergency | 98106 | $10,880 |
| Oct 7, 2025 | Panel upgrade | 98122 | $6,659 |
What to ask before you hire
About South West Plumbing & Waterheaters, Inc
- Ask for their license number and check it with the state.
- Ask whether they are on the city's participating list, which rebates apply to your job, and who files the paperwork.
- Ask what the warranty covers and for how long, in writing.
- Search their name on the Better Business Bureau site, and read their reviews.
Worth asking any heat pump installer
- Can you show me proof of liability insurance and your bond?
- What size unit, and did you measure the house to choose it?
- Do my ducts or my electrical panel need work first?
- Who pulls the permit, and what rebates apply?
Get a quote from South West Plumbing & Waterheaters, Inc
Five quick questions. We pass your request to South West Plumbing & Waterheaters, Inc.
Request for South West Plumbing & Waterheaters, Inc
- Where
- Job
- Start
- Budget
- Goes to
You decide who to hire. Your details go only to the contractors you pick. How we use your details
Sent. We have your request.
We pass it to South West Plumbing & Waterheaters, Inc. Replies usually come within a few days.
Your job room keeps the request, your photos and every reply in one place, with an assistant that checks prices against city permits. Keep its link: it is the key to your job.
Open your job roomMore heat pump installers near 98118 and 98144
- Greenwood Heating & Home Services
- Seatown Electric, Plumbing, Heating & Air Dba Seatown Services
- Evergreen Home Heating & Energy
- Thomas Mechanical LLC
- Aday Standard LLC
- A.b. Contracting and Development
See all 197 heat pump installers in Seattle, ranked by jobs
Run this business? Claim this page to get requests by email and reply to homeowners here.