Top-Rated San Francisco HVAC Companies
7 vetted contractors, thoroughly researched and ranked
Last Updated: January 25, 2026
Our Top Pick
Ortiz Heating & Air Conditioning
License #803346 · Verified via CSLB
22 consecutive years of Diamond Certified status with owner Alex Ortiz personally involved in estimates and projects, ensuring consistent quality and communication.
Platform Scores
(6)
(129)
A+
22 yrs
Carrier Authorized
Family-owned HVAC company with 26 years in business, specializing as an Authorized Carrier Dealer. Reviews consistently praise owner Alex Ortiz's personal involvement, thorough explanations, and quality workmanship. Best for Peninsula and Bay Area homeowners seeking a reliable, well-established contractor with exceptional credentials.
Essential Q&A
What makes them stand out?
22 consecutive years of Diamond Certified status with owner Alex Ortiz personally involved in estimates and projects, ensuring consistent quality and communication.
Who should hire them?
Bay Area homeowners seeking a well-credentialed, family-owned contractor with exceptional longevity and a track record of quality Carrier installations.
Insider tip
Request Alex Ortiz personally handle your estimate—reviewers consistently praise his thorough explanations and honest pricing compared to larger companies.
Platform Scores
(0)
(83)
A+
21 yrs
85%
NATE Certified
LEED Accredited Professional
SMACNA Safety Award (5 of last 8 years)
Trane Authorized
Lennox Authorized
24/7 Emergency
Family-owned HVAC contractor serving the San Francisco Peninsula since 1984 with 41 years of experience. Exceptional credential set includes 21 consecutive years of Diamond Certified status backed by 319 verified customer surveys, plus A+ BBB rating and NATE-certified technicians. Best for homeowners prioritizing quality workmanship and long-term reliability over lowest price.
Essential Q&A
What makes them stand out?
21 consecutive years of Diamond Certified status with 319 verified customer surveys, plus in-house sheet metal shop for custom ductwork fabrication.
Who should hire them?
Homeowners who prioritize quality, reliability, and long-term relationships over finding the absolute lowest price—those who want it done right the first time.
Insider tip
Request Al Morando (Vice President) for your initial consultation; reviews consistently praise his thorough explanations and follow-through from estimate to final inspection.
Platform Scores
(354)
(949)
A+
1 yrs
NATE Certified
EPA Certified
Diamond Certified
American Standard Authorized
Mitsubishi Authorized
24/7 Emergency
Established in 2018 with 7 years in business, Galaxy specializes in high-efficiency heat pump systems, ductless mini-splits, and comprehensive HVAC services across the Bay Area. Reviews consistently highlight same-day response times, professional technicians who explain work clearly, and transparent pricing backed by extensive guarantees. Best for Bay Area homeowners seeking a Diamond Certified contractor with 24/7 availability, rebate expertise, and strong warranty coverage.
Essential Q&A
What makes them stand out?
Diamond Certified with 84 verified customer surveys, American Standard Platinum Dealer and Mitsubishi Diamond Contractor status, backed by six comprehensive guarantees including a 10-year workmanship warranty, no-lemon guarantee, and 1-year buy-back promise.
Who should hire them?
Bay Area homeowners seeking high-efficiency heat pump installations with expert rebate assistance, 24/7 emergency availability, and strong warranty protection from a locally-owned contractor with multiple manufacturer authorizations.
Insider tip
Request a heat pump system evaluation to take advantage of their TECH Clean and HEEHRA rebate expertise—satisfied customers report significant savings when Galaxy handles the rebate applications on their behalf.
Platform Scores
(15)
(221)
A+
93%
Family-owned since 1968, specializing in gas heating repair and older gravity furnaces. Known for honest pricing (28% below market average per Checkbook) and technicians who repair rather than replace when possible. Best for San Francisco homeowners with older heating systems seeking trustworthy, affordable service.
Essential Q&A
What makes them stand out?
Specialists in repairing older gravity furnaces that most companies refuse to service, with 57 years of family expertise in San Francisco's unique housing stock.
Who should hire them?
Homeowners with older or gravity furnaces seeking honest assessment and repair before replacement, particularly those in San Francisco's vintage homes.
Insider tip
Call early morning (8am) for same-day or next-day appointments; they don't charge a diagnostic fee and provide free estimates for replacements.
Platform Scores
(50)
(95)
A+
23 yrs
81%
NATE Certified
EPA Certified
Diamond Certified
Carrier Authorized
150 years in business (founded 1876), fifth-generation family-owned HVAC company specializing in furnaces, heat pumps, and custom sheet metal fabrication. Consistently rated Highest in Quality by Diamond Certified for 23 consecutive years with exceptionally high verified customer satisfaction. Best for homeowners and commercial property managers who prioritize reliability, expertise, and long-term relationships over lowest price.
Essential Q&A
What makes them stand out?
Fifth-generation family-owned company with 150 years of Bay Area HVAC experience and Diamond Certified status for 23 consecutive years, demonstrating exceptional consistency and verified customer satisfaction.
Who should hire them?
Homeowners and commercial property managers who value long-term reliability, professional expertise, and quality workmanship over bargain pricing.
Insider tip
Request to speak with the owner Greg Schmitt for complex projects; multiple reviewers praised his personal involvement and the company's ability to quickly source parts due to their extensive inventory.
Platform Scores
(328)
(215)
C+
EPA 608 Certified
Established in 2011 in Los Angeles with San Francisco Bay Area expansion, Next HVAC specializes in mini-split installations and appliance repair. Reviews consistently praise their professional technicians who are detail-oriented and clean up after themselves. Best for homeowners needing ductless mini-split systems or appliance repairs who prioritize quality installation over lowest price.
Essential Q&A
What makes them stand out?
Specializes in challenging mini-split installations in multi-unit buildings and older homes without existing ductwork, with particular attention to aesthetically discreet conduit placement.
Who should hire them?
Homeowners seeking ductless mini-split installations in older San Francisco homes or multi-unit buildings who value clean, detail-oriented work over budget pricing.
Insider tip
Ask for Alex as the team lead for complex mini-split installations, and take advantage of their 15% return customer discount for future maintenance.
Platform Scores
(17)
(9)
A+
EPA Certified
24/7 Emergency
38 years in business providing residential and commercial HVAC services across the Bay Area with A+ BBB rating. Reviews highlight quick emergency response and no-upsell honesty, though some scheduling reliability concerns noted. Best for homeowners needing responsive emergency HVAC service who value transparent, no-pressure pricing.
Essential Q&A
What makes them stand out?
Family-owned company known for honest service without upselling and ability to respond same-day during extreme weather emergencies when other contractors are booked.
Who should hire them?
Bay Area homeowners who prioritize emergency availability and transparent pricing over premium service, and commercial clients needing server room or industrial HVAC solutions.
Insider tip
Call during off-peak seasons (spring/fall) for faster scheduling; verify appointment confirmation the day before as some reviewers noted occasional scheduling issues.