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(415) 944-0114

Heating & Cooling Experts Serving San Francisco, CA & the Bay Area

At Bay Air Heating & Cooling, we’ve been delivering exceptional HVAC solutions to Marin County and San Francisco homeowners for 13 years. Our mission is to ensure your home stays comfortable, energy-efficient, and safe with our comprehensive services, including Furnace Installations, AC Repairs, and Indoor Air Quality Solutions. We’re proud to lead the way in providing reliable, high-quality HVAC care, backed by our commitment to your complete satisfaction.

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Our Services

Heating

Cooling

Water Heaters

Ductwork and Insulation

Indoor Air Quality

Commercial HVAC

Why Choose Us?

Swift and Reliable Service

When your heating or cooling system falters, we know every minute counts. Our rapid response ensures we address your HVAC needs quickly, preventing small issues from turning into major disruptions. With Bay Air, you’ll never be left in the cold-or the heat!

Fully Licensed, Bonded, and Insured

As a fully licensed, bonded, and insured HVAC provider, we offer professional expertise, financial protection, and comprehensive coverage for every project, meeting the highest standards of safety and quality.

Energy Efficiency Experts


We specialize in energy-efficient HVAC solutions that can save you 15-30% on your energy bills. From high-efficiency furnace installations to smart thermostat upgrades, we help homeowners reduce their carbon footprint while keeping their homes comfortable year-round.

Community-Focused Service

As a local business with 13 years of roots in Marin County and San Francisco, we’re deeply committed to our community. We take pride in supporting local initiatives and providing personalized HVAC care that meets the unique needs of Bay Area homes, ensuring your family’s comfort and safety with every service.

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Emergency HVAC Services in Marin County and San Francisco

When your furnace fails or your AC stops, Bay Air Heating & Cooling is here to help-fast. We offer same-day emergency appointments to restore your home’s comfort and safety without delay. Whether it’s a sudden breakdown, a gas leak concern, or an air quality issue, our licensed team responds swiftly with expert repairs that meet the highest standards, ensuring your peace of mind when you need it most.

Book Your Emergency Appointment or Call (415) 944-0114 Now!

We're proud to serve the following area's

ServiceArea_Marin

Marin County

San Francisco County

Napa & Sonoma County

Peninsula

Contra Costa County

Hear from our Clients

My 9-year-old HVAC system, originally installed by a different company, developed an issue. When I contacted the initial installer, they pressured me to replace the entire system rather than fixing the faulty coil, which was still under warranty. They also quoted an exorbitant labor fee for the replacement. I reached out to Bay Air Heating & Cooling, and Israel arrived to assist.

 

He accurately identified the issue, provided a clear explanation, and quoted a reasonable price for the repair. During the process, another component began to fail, but Israel quickly arranged for a replacement part and installed it at no additional cost. After dealing with an overpriced and unhelpful company, I’m incredibly grateful to Bay Air for their professionalism and care. I’ll definitely be calling them for future needs!

- Eli K.

Bay Air Heating & Cooling is the honestly the best! While preparing to sell my condo, the home inspection revealed that the AC wasn’t cooling properly. I posted a request for help on Yelp around 8 PM, and to my surprise, the owner responded in under ten minutes. They sent a technician out the very next morning, replaced the evaporator coil, and the issue was resolved!

I also asked them to inspect the HVAC system at my new townhouse, which the inspector had claimed was in perfect condition. The team discovered a small leak in one of the coils (a detail the inspector missed). It wasn’t a problem at all- they fixed the coil that same day.

They were so professional, friendly, and clearly passionate about their work. A huge thanks to Bay Air Heating & Cooling for overseeing that both properties were taken care of. Highly recommend!

- Daniel A.

We hired Bay Air Heating & Cooling to install a new furnace on our family property in Marin. Israel was responsive, knowledgeable, and did an excellent job. They provide very trustworthy and reliable service. We would definitely use them again for any HVAC needs!

- Ashlee N.