Brennan Heating, Air Conditioning, & Electric
Seattle, WA HVAC · #3 of 8 · 39+ yrs
At a glance
- Google rating
- 4.5★ from 2,240+ reviews
- In business
- 39+ years
- Services
- 8 HVAC services
- Service area
- Seattle, WA + 4 nearby
- Phone
- +1-425-553-2613
Brennan Heating, Air Conditioning, & Electric as a HVAC provider
Seattle, WA HVAC · #3 of 8 · 39+ yrs
Brennan leads with specialty HVAC installations and whole-home comfort upgrades. The company lists Lennox Premier and Carrier Premier dealer status. Brennan ties services to Seattle's damp, cool climate and frequent heat-pump use. Reviews cite technicians explaining repairs and performing thorough diagnostics. Aeroseal duct-sealing capability appears on their service pages.
Residential HVAC and air-quality services across Western Washington, focused on Seattle and nearby cities. Dealer status includes Lennox Premier Dealer and Carrier Premier Dealer. Emergency service available (same-day, per their site). Aeroseal-certified duct sealing and free energy consultations are listed.
Above the Seattle, WA HVAC average of 81/100. Ranks #3 of 8 listed HVAC providers in Seattle, WA.
| Signal | Brennan Heating, Air Conditio… | Seattle avg | Delta |
|---|---|---|---|
| Vouched Score | 85/100 | 81/100 | +4 vs avg |
| Google rating | 4.5★ | 4.8★ | -0.2 vs avg |
| Review volume | 2,240+ | 1,995+ | +244 vs avg |
| Years in business | 39+ | 35+ | +4 vs avg |
- Long-established (39+ years in business)
- Authorized Lennox Premier Dealer
- Emergency response: same-day
- Financing available
- Free estimates
- Specializes in AC repair
- You need AC system replacement
- You need same-day or after-hours service
- You value a long-tenured local operator (39+ years in business)
- You want a BBB-rated firm specifically
| Provider | Vouched | Years | BBB | Yelp | Our picks | |
|---|---|---|---|---|---|---|
Brennan Heating, Air Conditioning, & Electric (this company) |
85/100 | 4.5★ (2,240+) | 39+ | — | — | Ductwork & Sealing Free Estimates |
| 89/100 | 4.9★ (4,725+) | 105+ | — | — | Highest Vouched Score | |
| 67/100 | 4.5★ (150+) | 30+ | — | — | Best for Furnace Repair | |
| 87/100 | 5.0★ (1,210+) | 44+ | — | — | — |
Brennan Heating, Air Conditioning, & Electric as a AC Replacement provider
Seattle, WA AC Replacement · #4 of 6 · 39+ yrs
Brennan lists full central AC replacement and Lennox dealer status on their site.
Full central AC replacement across Western Washington, focused on whole-home changeouts.
Above the Seattle, WA AC Replacement average of 83/100. Ranks #4 of 6 listed AC Replacement providers in Seattle, WA.
| Signal | Brennan Heating, Air Conditio… | Seattle avg | Delta |
|---|---|---|---|
| Vouched Score | 84/100 | 83/100 | +1 vs avg |
| Google rating | 4.5★ | 4.8★ | -0.3 vs avg |
| Review volume | 2,240+ | 2,510+ | -271 vs avg |
| Years in business | 39+ | 41+ | -2 vs avg |
- Long-established (39+ years in business)
- Emergency response: same-day
- Financing available
- Free estimates
- Specializes in AC replacement
- You need same-day AC replacement
- You need same-day or after-hours service
- You need to finance the work
- You value a long-tenured local operator (39+ years in business)
- You want a BBB-rated firm specifically
| Provider | Vouched | Years | BBB | Yelp | Our picks | |
|---|---|---|---|---|---|---|
Brennan Heating, Air Conditioning, & Electric (this company) |
84/100 | 4.5★ (2,240+) | 39+ | — | — | Best for High-Efficiency Upgrades |
| 89/100 | 4.9★ (4,725+) | 105+ | — | — | Highest Vouched Score Best for Full-System Changeout |
|
| 87/100 | 4.9★ (3,315+) | 20+ | — | — | Best for Commercial AC Replacement | |
| 86/100 | 5.0★ (1,210+) | 44+ | — | — | — |
Brennan Heating, Air Conditioning, & Electric as a Furnace Replacement provider
Seattle, WA Furnace Replacement · #5 of 7 · 39+ yrs
Furnace replacement work is listed with named Lennox equipment and energy consultants. Brennan Heating lists 35+ years in business. Seattle's mild, wet winters increase the need for correct condensing venting and condensate management. Customer feedback cites same-day emergency responses and thorough installation crews.
Furnace replacement and gas-furnace changeouts across Western Washington, including Seattle and nearby suburbs. Lennox Dealer status and energy consultants are noted on their site. Emergency Response: same-day service is advertised for critical heating failures. Brennan Heating lists 35+ years in business and shows flexible financing options.
Above the Seattle, WA Furnace Replacement average of 81/100. Ranks #5 of 7 listed Furnace Replacement providers in Seattle, WA.
| Signal | Brennan Heating, Air Conditio… | Seattle avg | Delta |
|---|---|---|---|
| Vouched Score | 82/100 | 81/100 | +1 vs avg |
| Google rating | 4.5★ | 4.8★ | -0.3 vs avg |
| Review volume | 2,240+ | 2,255+ | -13 vs avg |
| Years in business | 39+ | 37+ | +2 vs avg |
- Long-established (39+ years in business)
- Emergency response: same-day
- Satisfaction guarantee
- Financing available
- Free estimates
- You need same-day furnace replacement
- You need same-day or after-hours service
- You need to finance the work
- You value a long-tenured local operator (39+ years in business)
- You want a BBB-rated firm specifically
| Provider | Vouched | Years | BBB | Yelp | Our picks | |
|---|---|---|---|---|---|---|
Brennan Heating, Air Conditioning, & Electric (this company) |
82/100 | 4.5★ (2,240+) | 39+ | — | — | — |
| 89/100 | 4.9★ (4,725+) | 105+ | — | — | Highest Vouched Score Best for Furnace + AC Changeout |
|
| 87/100 | 4.9★ (3,315+) | 20+ | — | — | Best for Commercial Furnace Replacement | |
| 87/100 | 5.0★ (1,210+) | 44+ | — | — | Best for Gas Furnace Replacement |
Brennan Heating, Air Conditioning, & Electric as a Indoor Air Quality provider
Seattle, WA Indoor Air Quality · #2 of 4 · 39+ yrs
Ventilation work highlights ERV/HRV installations, per their site. Aeroseal duct sealing is listed as a certified service. Humidifier and whole-house humidification systems appear among their IAQ offerings. Brennan has served Western Washington since 1987, tying them to Seattle's damp, mold-prone climate. Review excerpts praise punctual crews and thorough explanations of work.
Indoor air quality installs for Seattle homes, including whole-home purifiers and ventilation solutions. Aeroseal duct sealing certification is listed on their site. ERV/HRV ventilation equipment is offered for balanced fresh-air systems. Free estimates and financing options are available for qualifying projects.
Above the Seattle, WA Indoor Air Quality average of 78/100. Ranks #2 of 4 listed Indoor Air Quality providers in Seattle, WA.
| Signal | Brennan Heating, Air Conditio… | Seattle avg | Delta |
|---|---|---|---|
| Vouched Score | 82/100 | 78/100 | +4 vs avg |
| Google rating | 4.5★ | 4.8★ | -0.3 vs avg |
| Review volume | 2,240+ | 1,835+ | +404 vs avg |
| Years in business | 39+ | 42+ | -4 vs avg |
- Long-established (39+ years in business)
- Emergency response: same-day
- Financing available
- Free estimates
- You need same-day or after-hours service
- You need to finance the work
- You value a long-tenured local operator (39+ years in business)
- You want a BBB-rated firm specifically
| Provider | Vouched | Years | BBB | Yelp | Our picks | |
|---|---|---|---|---|---|---|
Brennan Heating, Air Conditioning, & Electric (this company) |
82/100 | 4.5★ (2,240+) | 39+ | — | — | Best for Whole-Home Air Purification Best for Humidity Control |
| 88/100 | 4.9★ (4,725+) | 105+ | — | — | Highest Vouched Score | |
| 72/100 | 4.8★ (225+) | 10+ | — | — | — | |
| 71/100 | 4.9★ (155+) | 16+ | — | — | — |
Brennan Heating, Air Conditioning, & Electric as a Mini-Split Installation provider
Seattle, WA Mini-Split Installation · #4 of 6 · 39+ yrs
Flexible financing and free estimates are highlighted across Brennan's service pages. The website lists same-day emergency response for urgent HVAC issues. Brennan notes Aeroseal duct-sealing certification for indoor air quality work. Brennan Heating traces roots back to 1987, serving Western Washington for decades. Multiple review snippets praise punctuality and thorough job explanations on installations.
Ductless mini-split installation across Western Washington, including single- and multi-system installs. Free estimates are listed on the site for upfront project pricing. Financing options are advertised for higher-ticket ductless and heat-pump projects. The site advertises same-day emergency response for urgent comfort issues.
Above the Seattle, WA Mini-Split Installation average of 81/100. Ranks #4 of 6 listed Mini-Split Installation providers in Seattle, WA.
| Signal | Brennan Heating, Air Conditio… | Seattle avg | Delta |
|---|---|---|---|
| Vouched Score | 82/100 | 81/100 | +1 vs avg |
| Google rating | 4.5★ | 4.8★ | -0.3 vs avg |
| Review volume | 2,240+ | 2,430+ | -189 vs avg |
| Years in business | 39+ | 33+ | +6 vs avg |
- Long-established (39+ years in business)
- Emergency response: same-day
- Financing available
- Free estimates
- You need same-day or after-hours service
- You need to finance the work
- You value a long-tenured local operator (39+ years in business)
- You want a BBB-rated firm specifically
| Provider | Vouched | Years | BBB | Yelp | Our picks | |
|---|---|---|---|---|---|---|
Brennan Heating, Air Conditioning, & Electric (this company) |
82/100 | 4.5★ (2,240+) | 39+ | — | — | — |
| 86/100 | 4.9★ (4,725+) | 105+ | — | — | — | |
| 86/100 | 4.9★ (3,315+) | 20+ | — | — | Highest Vouched Score Best for Mini-Split Repair |
|
| 86/100 | 4.9★ (3,910+) | 9+ | — | — | — |
Brennan Heating, Air Conditioning, & Electric as a Heat Pump Installation provider
Seattle, WA Heat Pump Installation · #4 of 6 · 39+ yrs
Brennan Heating lists ducted Lennox heat pumps alongside free energy consultations. The company traces back 35+ years serving Western Washington. Seattle's mild, damp winters favor efficient heat pump performance and electrification. Customer feedback often highlights punctual crews and tidy, explanatory installations.
Ducted air-source heat pump installations across Seattle and Western Washington. Lennox Dealer status and free energy consultations are listed on their site. 35+ years of operation since 1987. Free estimates, flexible financing, and same-day emergency response are advertised.
Seattle, WA Heat Pump Installation average is 81/100. Ranks #4 of 6 listed Heat Pump Installation providers in Seattle, WA.
| Signal | Brennan Heating, Air Conditio… | Seattle avg | Delta |
|---|---|---|---|
| Vouched Score | 80/100 | 81/100 | -1 vs avg |
| Google rating | 4.5★ | 4.8★ | -0.3 vs avg |
| Review volume | 2,240+ | 2,080+ | +162 vs avg |
| Years in business | 39+ | 37+ | +2 vs avg |
- Long-established (39+ years in business)
- Emergency response: same-day
- Financing available
- Free estimates
- You need same-day or after-hours service
- You need to finance the work
- You value a long-tenured local operator (39+ years in business)
- You want a BBB-rated firm specifically
| Provider | Vouched | Years | BBB | Yelp | Our picks | |
|---|---|---|---|---|---|---|
Brennan Heating, Air Conditioning, & Electric (this company) |
80/100 | 4.5★ (2,240+) | 39+ | — | — | — |
| 87/100 | 4.9★ (4,725+) | 105+ | — | — | — | |
| 87/100 | 5.0★ (1,210+) | 44+ | — | — | — | |
| 86/100 | 4.9★ (3,910+) | 9+ | — | — | — |
What customers say
Services
- AC Repair — Diagnostics and repair of central air conditioning systems — refrigerant leaks, capacitor and contactor failures, condenser fan motors, and thermostat issues.
- AC Replacement — Removal and replacement of an aging or failed central A/C — typically condenser, evaporator coil, and refrigerant lines.
- HVAC Installation — Full HVAC system installation including indoor and outdoor equipment, ductwork tie-in, and refrigerant work.
- Mini-Split Systems — Mini-split installation and service — typically ductless, used for additions or zoned comfort.
- Indoor Air Quality — Indoor air-quality work: high-MERV filtration, UV systems, humidifiers/dehumidifiers, and duct sanitization.
- Duct Work — Ductwork inspection, sealing, and replacement — addresses leakage, undersized runs, and uneven room temperatures.
- Emergency HVAC Service — After-hours emergency response for no-cool and no-heat calls.
Service area
Guarantees & credentials
- Licensed electricians
- Fully insured
Sourced from the provider's own website. We surface these as published; we do not independently verify each license or warranty.
Contact & hours
Frequently asked questions
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Profile last updated July 19, 2026.