Is Brennan family owned?

No. Brennan is owned by The SEER Group. The local name was kept after acquisition.

Is it safe to hire Brennan?

Ownership doesn't determine the quality of the technician. It does determine the sales process. Ask for a written quote, decline same-day pressure, and compare with a verified independent.

Parity › Who owns it › Brennan

Logo from its own website

Investor-owned · website not yet checked

Who owns Brennan?

The short answer

Brennan is owned by The SEER Group. It is not an independent local business.

Quick facts

Company: Brennan
Trade: HVAC / Plumbing / Electrical
Based in: Seattle, WA · All investor-owned companies in Washington →
Owned by: The SEER Group · their site
Ownership disclosed?: Not checked: we could not open this company’s website when we tried on 2026-10-03.

About Brennan

Brennan provides HVAC / Plumbing / Electrical services in Seattle, WA. It operates under its original local name and is owned by The SEER Group.

What this means before you call

The name on the truck is not the owner. In investor-owned home-service groups, the price book, the sales process and the financing offers are usually set centrally, not at the local office. What to check before you sign →

Sources

The SEER Group’s own brand page lists Brennan Heating & Air Conditioning: source (2026-10-03)
TradeRunner infographic “A Look at 40 Residential HVAC, Plumbing & Electrical Platforms” shows Brennan in the SEER Group section: source (2025-12-22)
Parity ownership research: Brennan Heating, Air Conditioning, Plumbing & Electrical (since 1987); trades match exactl: source (2026-09-14)
Its own website shows this logo: source (2026-10-17)

Other brands under The SEER Group

Hassler Heating and Air Conditioning Mike's Mechanical Services LLC Aladdin Air Conditioning & Heating Inc.Border Sheet Metal & Heating Bower Mechanical Brower Mechanical Coffman & Company Columbia NW Heating & Air Conditioning Evergreen Gas, Heating & Cooling First Call Heating & Cooling Gropp Heating, Air, & Electric J. A. Bertsch Heating & Cooling

See all 45 The SEER Group brands →

Parity is an editorial publication. Ownership facts are sourced from public filings and company-published material; we make no claim about the quality of any individual technician. Represent Brennan or The SEER Group? Verify or contest this page · How we check · Corrections policy. Page generated 2026-10-26 from Parity’s records.