Top-Rated North Bay HVAC Companies
6 vetted contractors, thoroughly researched and ranked
Last Updated: October 19, 2026
Our Top Pick
Aarvaks Heating & Air Conditioning
License #1146520 · Verified via CSLB
Berkeley's longest-operating family-owned HVAC contractor has been in business for nearly a century and is one of the few local companies that has turned away a private equity ownership.
Platform Scores
(91)
(49)
A+
71%
NATE Certified
Carrier Authorized
IQAir Authorized
Berkeley's longest-operating family-owned HVAC contractor has been in business for nearly a century. The company has been transformed since November 2025 when Jason Hanson assumed ownership. Hanson spent over a decade turning El Cerrito based Hassler Heating and Air Conditioning into a Bay Area powerhouse. Like most of the market, Hassler was acquired by a private equity firm a few years ago and Hanson saw an opportunity to build something special at Aarvaks, a local institution that was in need of a transformation. Hanson brought in the top technicians from Hassler and has quickly built a reputation for quality custom work and customer service. Best for East Bay homeowners who prioritize reliability and expertise over rock-bottom pricing.
Essential Q&A
What makes them stand out?
Berkeley's longest-operating family-owned HVAC contractor has been in business for nearly a century and is one of the few local companies that has turned away a private equity ownership.
Who should hire them?
Bay Area homeowners in older homes who value established reputation, personalized service, and heat pump expertise over the lowest bid.
Insider tip
Ask for the owner Jason directly for complex diagnostic issues—multiple reviewers praise his patience in troubleshooting by phone before dispatching a technician, potentially saving a service call.
Platform Scores
(305)
(163)
A+
15 yrs
NATE Certified
Trane Comfort Specialist
Daikin Comfort Pro
Trane Authorized
Daikin Authorized
24/7 Emergency
31 years in business since 1994, specializing in HVAC installation and repair with particular expertise in whole-house comfort systems. Distinguished by Diamond Certified status for 15 consecutive years with 404 verified customer surveys and owner-involved consultations that take a 'house as a system' approach. Best for Marin and Sonoma County homeowners seeking a family-owned contractor with proven long-term reliability and manufacturer-certified expertise.
Essential Q&A
What makes them stand out?
Diamond Certified for 15 consecutive years with 404 verified customer surveys, owner Jim Kelly personally conducts detailed home evaluations using a 'house as a system' approach rather than just selling equipment.
Who should hire them?
Marin and Sonoma County homeowners who value thorough consultations, premium equipment options, and a family-owned company with verified long-term track record over lowest-price providers.
Insider tip
Request Jim Kelly for the initial consultation - multiple reviews highlight that his in-depth crawl space inspections and whole-house assessments identify issues other contractors miss.
Platform Scores
(393)
(693)
A+
12 yrs
82%
NATE Certified
Factory Authorized Carrier Dealer
Nest Pro Dealer
Carrier Authorized
24/7 Emergency
25+ years in business, specializing in heat pump conversions and home electrification for Bay Area homes with complex HVAC needs. Diamond Certified for 12 consecutive years with exceptional rebate expertise—has helped customers secure over $5 million in energy rebates since 2010. Best for homeowners seeking premium, full-service HVAC work with expert guidance on energy upgrades and incentive programs.
Essential Q&A
What makes them stand out?
Diamond Certified for 12 consecutive years with a dual specialty as both a full-service HVAC contractor and home performance company—has helped customers secure over $5 million in energy rebates.
Who should hire them?
Bay Area homeowners with older or architecturally complex homes seeking premium, comprehensive HVAC service with expert guidance on electrification and available rebates.
Insider tip
Ask about their VIP Club Membership for 15% off repairs and schedule during non-peak seasons for faster appointment availability.
Platform Scores
(342)
(30)
A+
12 yrs
Diamond Certified
Bryant Factory Authorized Dealer
Bryant Authorized
Mitsubishi Authorized
Family-owned HVAC contractor serving Sonoma, Marin, and Napa Counties since 2008 with 17 years in business. Consistently praised for professional, knowledgeable technicians who explain their work and for exceptional customer service as evidenced by 12 consecutive years of Diamond Certification. Best for homeowners seeking a reliable, quality-focused contractor willing to pay slightly premium prices for proven expertise and peace of mind.
Essential Q&A
What makes them stand out?
12 consecutive years of Diamond Certification with 199 verified customer surveys averaging 4.7 stars, demonstrating consistent quality that few competitors can match.
Who should hire them?
Homeowners in Sonoma, Marin, or Napa Counties who prioritize quality workmanship and customer service over finding the absolute lowest price, particularly those interested in heat pump or mini-split installations.
Insider tip
Ask about their CARE Membership maintenance program for ongoing service discounts, and request a heat load calculation for new installations—their in-house sheet metal fabrication means custom ductwork fits your home precisely.
Platform Scores
(2,497)
(480)
A+
10 yrs
76%
NATE Certified
PHCC Certified
Trane Authorized
Mitsubishi Authorized
Family-owned since 1932, Ongaro & Sons is a fourth-generation HVAC, plumbing, and electrical contractor celebrating 93 years of service. Reviews consistently praise their professional, well-trained NATE-certified technicians who do work properly and maintain clean job sites. Best for homeowners in Sonoma and Marin Counties seeking an established contractor with multi-generational expertise, though pricing transparency scores below industry average.
Essential Q&A
What makes them stand out?
Four generations of family ownership since 1932 with NATE-certified technicians, Diamond Certified status for 10 consecutive years, and a 100% satisfaction guarantee backed by 93 years of community reputation.
Who should hire them?
Homeowners in Marin, Sonoma, and Napa Counties who prioritize quality workmanship and expertise over lowest price, and value a well-established company with multi-generational customer relationships.
Insider tip
Sign up for their yearly maintenance plan—reviews consistently mention they proactively contact customers for scheduled maintenance. Be aware their $98 minimum service call covers diagnosis only, and request detailed cost breakdowns upfront since only 68% of Checkbook respondents rated them superior for early cost disclosure.
Platform Scores
(1,702)
(627)
A+
13 yrs
71%
Diamond Certified
NATE Certified
EPA 608 Certified
Lennox Authorized
Mitsubishi Electric Diamond Contractor Authorized
24/7 Emergency
16 years in business specializing in energy-efficient HVAC installation and plumbing services across Sonoma, Marin, and Napa Counties. Diamond Certified for 13 consecutive years with 425 verified customer surveys and a strong satisfaction guarantee. Best for homeowners seeking a well-established, full-service HVAC contractor with comprehensive warranties and membership programs who prioritize professionalism over lowest price.
Essential Q&A
What makes them stand out?
Diamond Certified for 13 consecutive years with a 100% Right or 100% Free satisfaction guarantee, backed by 425 verified telephone surveys and over 150 hours of annual technician training.
Who should hire them?
Homeowners in Sonoma, Marin, or Napa Counties seeking a well-established, full-service HVAC and plumbing contractor with strong warranties who value professionalism and comprehensive service over lowest price.
Insider tip
Join the Moore Rewards membership program ($19.95/month) for two included annual tune-ups plus a plumbing inspection—reviews consistently praise the value and priority scheduling this provides.