Heating
Furnace repair, replacement, installation and maintenance, from older systems to high-efficiency furnaces and heat pumps.
Heating & cooling experts serving San Francisco & Marin
Comfort, beautifully considered.
Furnace, heat pump, AC and ductwork repair, replacement and installation, for homes and businesses.
Licensed C-20 #1156059·Open 7 days, 8am to 8pm
What we do
Heating, cooling & the air between
Cooling
Air conditioning, condenser and heat pump repair, replacement and installation, sized for the way Bay Area homes actually heat up.
Ductwork
Disconnected, leaking or undersized ducts repaired or replaced, plus duct cleaning, so air reaches every room.
Commercial
Repair, maintenance, installation and replacement for offices, shops and commercial buildings in San Francisco and Marin.
We also look after water heaters, indoor air quality and insulation.
It's how you feel in your space.
Less effort.
Comfort for every moment.
you live, work and play.
Our approach
A more thoughtful kind of comfort.
Homes and businesses should feel good to be in. We help create comfortable, healthy and efficient indoor spaces through modern heating and cooling.
That starts with getting the most out of the system you already have. We repair before we replace, explain what we find in plain language, and only recommend new equipment when it is the better investment.
About Bay Air
Repair & diagnostics
Not working the way it should?
Describe what you are noticing and we will find the cause, walk you through it, and recommend the right fix, starting with a repair whenever that makes sense.
- Blowing cold air when the heat is on
- Short-cycling, turning on and off
- One room always too hot or too cold
- New noises, smells or a bill that jumped
What guides us
Thoughtful climate solutions for the spaces we live in
Comfort
Even, quiet warmth and cooling in every room, not just near the thermostat.
Healthy environments
Clean, well-moving air through ductwork that is sealed and sized properly.
Energy efficiency
Systems matched to the home, so you are not paying to heat the attic.
Modern solutions
Heat pumps, high-efficiency furnaces and smart controls, when they make sense.
Where we work
San Francisco & Marin County
We stay close to home, so we can get to you quickly and know the houses we work in, from Edwardians in the fog to hillside homes in the sun.
Kind words
From our clients
“The initial installer pressured me to replace the entire system rather than fixing the faulty coil, which was still under warranty. The technician accurately identified the issue, provided a clear explanation, and quoted a reasonable price for the repair.”
Eli K.
“I posted a request for help around 8 PM, and 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!”
Daniel A.
“We hired Bay Air Heating & Cooling to install a new furnace on our family property in Marin. The installer was responsive, knowledgeable, and did an excellent job.”
Ashlee N.
Book a visit
Let's make your home comfortable again
Send a few details and we will call you back to find a time. Prefer to talk? We are here 7 days, 8am to 8pm.
- Phone
- (628) 289-3552
- Hours
- 8am to 8pm, 7 days a week
Questions
Good to know
Do you repair systems, or only replace them?
We repair first whenever a repair makes sense. We will tell you what we found, what it costs to fix, and when replacing would actually save you money.
Where do you work?
San Francisco and Marin County, including Belvedere, Corte Madera, Mill Valley, Sausalito, Tiburon, Fairfax, Larkspur, Novato, San Anselmo, San Rafael, Ross.
What brands do you service and install?
All major brands, including Carrier, Trane, Lennox, Mitsubishi Electric, Daikin, Rheem, Ruud, York, Goodman and more.
Why is my heater blowing cold air?
Often it is the thermostat fan set to "on" instead of "auto", a clogged filter, or an ignition problem. If changing the filter and the fan setting does not fix it, book a visit.
How often should a furnace be serviced?
Once a year, ideally before the heating season. A yearly visit helps it last longer, run more efficiently and avoid mid-winter breakdowns.
Are you licensed?
Yes. Bay Air Heating & Cooling is licensed, bonded and insured, CSLB License C-20 #1156059.