Heating & AC Repair in Marin County, CA

Fuse Service repairs and installs heating and cooling systems across Marin County, from San Rafael and Novato to Mill Valley, Tiburon and Sausalito. Service call $59, credited to the repair if you approve it. Open 7am–7pm.

Licensed HVAC contractor: HI-HVAC LLC dba Fuse Service, CSLB #1154975 (C-20). Google rating of our Richmond office, which serves Marin: 4.9 from 139 reviews.

Call (925) 302-2429 Get a Quote

What Marin homes need

Based on our 2026 jobs in Marin County.

Gas furnace repair and replacement

Recent heating calls here: a furnace repair in San Rafael, a draft safety device replaced in Larkspur, furnace and AC repairs in Tiburon. In Corte Madera we replaced a furnace with a 97% AFUE modulating condensing gas furnace and added zoning, so each zone runs on its own thermostat.

Furnace repair · Furnace installation

Heat pumps instead of a furnace

In San Anselmo we installed two ducted Daikin FIT heat pump systems (2-ton and 3-ton) with new air handlers. One house also needed new flex ductwork. Ducted heat pump systems start from $9,300.

Heat pump installation · Heat pump repair

Boilers and radiant heat

Some Marin homes heat with hot water instead of air. We repair boilers and radiant systems. We don’t install air-to-water heat pumps.

Services and prices in Marin

Starting prices before discounts. The final price is set after the estimate.

Heating installation

Gas furnace from $6,000
Heat pump from $9,300
Heating installation →

Ductless mini split

From $3,100 (single zone)
Mini split installation →

Ductwork

Replacement from $3,400
Ductwork →

Water heaters

Tank and tankless
Water heaters →

Appliance repair

Refrigerators, ovens, stoves, dryers
Appliance repair →

Current offers and rebates →

Cities we serve in Marin

San Rafael, Novato, Mill Valley, Tiburon, Belvedere, Corte Madera, Larkspur, Greenbrae, Kentfield, Fairfax, San Anselmo, Sausalito.

Nearest office: Richmond, 173 Lakeshore Ct. Also serving: Richmond · Berkeley · All areas

Questions

Do you serve San Rafael and the rest of Marin County?

Yes. We serve San Rafael, Novato, Mill Valley, Tiburon, Belvedere, Corte Madera, Larkspur, Greenbrae, Kentfield, Fairfax, San Anselmo and Sausalito, every day from 7am to 7pm.

Is the permit included in the installation price?

No. The permit and city inspection are billed separately, from $250. That was the cost on a 2026 heat pump installation in San Anselmo.

Do you work on boilers and radiant heating?

We repair boilers and radiant systems. For a new heating system, we install gas furnaces, heat pumps and ductless mini splits. We don’t install air-to-water heat pumps.

How much is a service call in Marin?

$59 for HVAC and appliances. If you approve the repair, the $59 is credited to it.

Geoffrey Deetz

After being bombarded after requesting information from Yelp, I chose fuse because they contacted me first and were able to explain same-day service and a very small feed to look at the problem with my furnace the repair man Alexander that’s the English version of his name was quick, polite, professional, and helpful. Explain the problem the price, and after agreeing, he immediately fixed it checked everything checked for gas leaks. Check the fire detectors as well without asking to ensure that everything was working and Sayf I highly recommend them.

Robyn Selva

Fuse is my go to for anything Electrical. They installed a sub-panel for a swim spa as well as Electrical for fireplace inserts. As usual, they always go above and beyond and are super helpful and professional. We know that electrical work done by Fuse is going to be done right and safe. They’re wonderful to work with.

MR Manion

Great experience with FUSE, again. This time it was a mini spilt. Alex and his team moved fast, tackled multiple points of work concurrently. There’s no “here’s my assistant who’s learning” going on here. They were done in 5 hours and it was a big install! I fully expected this would be done in two days but they are masters at their craft. I wish FUSE did full home remodels!

Bill HAMLIN

Fuse did a great job for us from the initial assessment to our options to the installation. They handled permits, kept us well informed and their personnel were courteous and professional. We would heartily recommend their services.

Lina Lee

Fuse team was great! Excellent problem solving!

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HVAC Service in Marin County