75
StrongSeattle, WA 98144 4.7(45 reviews)
HVACPlumbingCommercial
Seattle, Washington · Commercial
Commercial HVAC & plumbing contractors in Seattle, WA
30 commercial HVAC & plumbing contractors in Seattle, out of 377 HVAC and plumbing businesses the Registry lists there. Ranked by Registry Score, owner-confirmed records first.
- Pros
- 30
- Avg. score
- 43.8
- Scored
- 26
Summary
Data last updatedAs of October 14, 2026, the ProComfort Registry lists 30 commercial HVAC & plumbing contractors in Seattle, Washington. Most-listed specialties: heating & furnaces (7), air conditioning (6), refrigeration (4). 26 have enough public signals for a Registry Score, averaging 43.8 out of 100; 2 score 70 or higher. Together they hold 4,438 public reviews on Google, Yelp and Facebook. The highest-scored is Knockout Plumbing & Mechanical LLC, at 75 out of 100. 7 are Featured for 2026. View Knockout Plumbing & Mechanical LLC.
Counts come straight from the Registry's records. How the Registry Score works
Showing 1–20 of 30
72
StrongSeattle, WA 98108 4.4(23 reviews)
HVACHeatingCommercial
68
EstablishedSeattle, WA 98104 4.5(76 reviews)
HVACRefrigerationCommercial
66
Established64
EstablishedSeattle, WA 98104 3.8(4,006 reviews)
HVACPlumbingHeatingCommercial
62
EstablishedSeattle, WA 98104 3.9(9 reviews)
HVACCommercial
62
Established58
Established57
Established53
EstablishedSeattle, WA 98118 4.3(3 reviews)
HVACRefrigerationCommercial
52
EstablishedSeattle, WA 98134 4.1(14 reviews)
HVACCommercial
48
Developing43
DevelopingSeattle, WA 98108 3.8(61 reviews)
HVACHeatingA/CRefrigeration
42
Developing38
Developing38
Developing38
DevelopingSeattle, WA 98134 4.2(2 reviews)
HVACCommercial
37
DevelopingSeattle, WA 98124 4.0(1 reviews)
HVACHeatingA/CRefrigeration
34
Developing30
DevelopingCommercial HVAC & plumbing contractors in Seattle: at a glance
- How many commercial HVAC & plumbing contractors are in Seattle, Washington?
- As of October 14, 2026, the ProComfort Registry lists 30 commercial HVAC & plumbing contractors in Seattle, Washington.
- Who is the highest-scored commercial HVAC or plumbing contractor in Seattle, Washington?
- By Registry Score, Knockout Plumbing & Mechanical LLC (Seattle, WA) ranks first at 75 out of 100, among 26 scored businesses averaging 43.8. The score combines public reviews (50 points), digital presence (30) and reach (20); nobody can pay for a higher score.
- How are commercial HVAC & plumbing contractors in Seattle, Washington ranked?
- By Registry Score (0-100, from public reviews, digital presence and reach), with records confirmed by their owners listed first. The full method is at https://procomfortregistry.online/methodology.
What this list includes: businesses whose public category or name points to commercial, industrial or mechanical contracting. Tags come from each business's public category and name, so a company can appear under several trades. Commercial HVAC & plumbing contractors across the US