Fast, Reliable Heating & Furnace Across San Anselmo
San Anselmo homeowners don’t need to wait for a technician from across the bridge. We’re Crestview Heating & Air California, and we make the run up from our San Jose base to the Ross Valley regularly for Heating & Furnace calls. Most San Anselmo appointments are scheduled within a day or two, and our emergency line stays open for those January mornings when your furnace won’t fire and the valley fog hasn’t lifted by noon. Call (844) 560-6978 for a free estimate.
Why Crestview Heating & Air California Is San Anselmo’s Preferred Heating & Furnace Company
We’ve built a 4.8-star average across 250+ customer reviews, and a healthy share of those come from Marin County homeowners who found us after frustrating experiences with dispatch-heavy outfits that couldn’t remember which valley they were driving to. Owner Marcus Feldman still manages every job as Service Manager, so the accountability you’re promised is the accountability you get.
San Anselmo’s geography creates specific furnace problems that generic HVAC companies miss. The Ross Valley traps heat in summer and holds damp, foggy air in winter. That marine layer isn’t just uncomfortable, it carries salt that corrodes heat exchangers years faster than drier inland climates. We’ve replaced enough rusted-out Carrier and Rheem burners in Sleepy Hollow and the flats near San Anselmo Creek to know exactly where to look first.
Our familiarity with ZIP codes 94960 and 94979 means we don’t waste your first appointment figuring out whether your bungalow on Sir Francis Drake has a crawlspace, a partial basement, or that quirky mid-century addition with the utility closet off the kitchen. We’ve seen all three.
Our Heating & Furnace Services in San Anselmo
Furnace Repair
A typical furnace repair in San Anselmo runs $150–$700 depending on the part and accessibility. The most common winter call we get from the Laurel Grove and Madera neighborhoods is a failed ignitor or gas valve on a 15–25 year old furnace that’s been cycling through damp, foggy mornings since November. Salt corrosion on burner assemblies is the hidden culprit in about a third of these no-heat calls. We stock ignitors, flame sensors, and gas valves for Trane, Lennox, Goodman, and Rheem units so most repairs finish in one visit.
Furnace Replacement
Full furnace replacement in San Anselmo typically costs $3,500–$7,500 installed. The defining challenge here isn’t the equipment, it’s where to put it. San Anselmo’s housing stock developed primarily as a North Pacific Coast Railroad suburb from the 1880s through the 1930s, leaving dense concentrations of Victorian cottages and Craftsman bungalows with balloon framing, original plaster walls, and no provision for forced-air ductwork. Accessing attics and interior wall cavities for any duct retrofit is severely constrained, making equipment selection and placement decisions critical from the first site visit.
We replaced a failed 20-year-old furnace in a Craftsman bungalow on Sir Francis Drake Boulevard near San Anselmo Creek. The original unit in the flood-prone crawlspace was condemned after the 2005 flood damaged the heat exchanger; we relocated a new 96% AFUE Carrier gas furnace to an elevated utility closet and added a ductless mini-split head for upstairs bedrooms, eliminating future flood risk.
Furnace Tune-Up
Our furnace tune-up in San Anselmo is priced $80–$200 and includes specific checks that matter in this climate. We pull and inspect the burner assembly for salt corrosion, test the heat exchanger with a combustion analyzer for early CO leakage, and verify that defrost cycles are calibrated for the valley’s damp winter mornings. The Ross Valley’s bowl geography blocks marine-layer intrusion that cools coastal Marin, producing measurably hotter summer afternoons and occasional multi-day heat events. But winters are mild yet damp, and the valley floor stays foggy and cool enough on winter mornings that heat-pump efficiency and defrost-cycle performance matter more here than in drier inland climates.
Heat Exchanger Inspection & Replacement
Cracked heat exchangers are a safety issue we don’t negotiate on. In San Anselmo, salt-air corrosion from coastal fog attacks furnace heat exchangers and burner assemblies, causing premature rust-through and CO leaks. We’ve found rust-pitted exchangers on 12-year-old Trane units that should have lasted 20. If we find a crack, we red-tag the furnace and walk you through replacement options same-day. No exceptions.
What happens when you call
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A real person answersNo phone trees — you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in San Anselmo
Your system, our specialty. We maintain factory-trained compatibility across nine major brands, and for San Anselmo customers we regularly stock parts for Trane, Lennox, Goodman, and Rheem. That means faster turnaround when your furnace quits on a foggy Tuesday morning. Marcus Feldman’s 19 years in the field covers everything from 1980s standing-pilot units in downtown Victorians to modulating gas valves in newer Sleepy Hollow builds. We don’t tell you “we don’t work on that.”
Common Heating & Furnace Problems We See in San Anselmo Homes
- Salt-air corrosion on heat exchangers and burners. The coastal fog that rolls into the Ross Valley carries enough salt to rust furnace internals years faster than you’d see in Petaluma or Walnut Creek. We inspect for this specifically on every tune-up and repair call.
- Balloon-framed walls and plaster make duct retrofits nearly impossible. San Anselmo’s pre-1940 housing stock wasn’t built for forced air. Many homeowners have relied on space heaters or undersized window units that fail under heat-wave loads. Ductless mini-split retrofits are often the only practical path to whole-house comfort.
- Flood-prone crawlspaces near San Anselmo Creek submerge floor-mounted furnaces. San Anselmo Creek has caused major flood events, notably 1982 and 2005, that inundated ground-level crawlspaces across the downtown and lower Sir Francis Drake corridor. Local HVAC techs and inspectors are attuned to the risk of placing furnaces or air-handler units in flood-vulnerable crawlspaces near the creek, and savvy installers steer those jobs toward elevated utility closets or wall-hung units regardless of what the standard layout might otherwise suggest.
- Undersized furnaces in additions and converted attics. San Anselmo’s charming Victorians often grew sideways with unpermitted additions that never got proper HVAC. The original furnace chokes trying to heat square footage it wasn’t designed for, cycling on and off until the heat exchanger cracks.
Pricing for Heating & Furnace in San Anselmo, CA
Here’s what San Anselmo homeowners actually pay:
| Service | Typical Range in San Anselmo |
|---|---|
| Furnace Repair | $150–$700 |
| Furnace Replacement | $3,500–$7,500 |
| Furnace Tune-Up | $80–$200 |
Replacement costs climb when we need to relocate from a flood-prone crawlspace to an elevated closet, or when a home needs electrical upgrades for a new high-efficiency unit. Repair costs vary with part availability. We diagnose for free with any completed repair, and we always present options before proceeding. Call (844) 560-6978 for an exact quote on your system.
We Also Serve Cities Near San Anselmo
Our route coverage through central Marin includes Heating & Furnace service in Fairfax, Kentfield, San Rafael, and Larkspur. Same owner-managed service, same brand coverage, same direct line to Marcus Feldman if something needs escalation.
Serving San Anselmo, CA — Our Local Coverage Area
We’re based in the San Anselmo area and know this community well. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs — Heating & Furnace in San Anselmo
You have three realistic paths: a ductless mini-split heat pump system, a high-velocity small-duct system if your attic allows it, or a gas furnace with creative duct routing through closets and soffits. Most San Anselmo Victorians and Craftsmans we work on end up with ductless mini-splits because balloon framing and plaster walls make conventional duct retrofits destructive and expensive. We can hybridize a small gas furnace for downstairs with mini-split heads upstairs. Call (844) 560-6978 and we’ll walk your specific layout.
Yes, and we recommend relocating it. San Anselmo Creek has flooded significantly in 1982 and 2005, submerging crawlspaces along Sir Francis Drake and downtown. Even “minor” flooding destroys blower motors, control boards, and heat exchangers. We steer creek-proximate jobs toward elevated utility closets or wall-hung equipment regardless of the existing layout. The upfront cost of relocation pays for itself the first time the creek rises.
Coastal fog carries salt that accelerates corrosion on heat exchangers, burners, and flue collectors. San Anselmo sits close enough to the marine layer to get hit regularly, while Petaluma’s drier climate doesn’t produce the same rust-through rates. We see this on 10–14 year old units that should last 20. Our tune-ups include specific corrosion inspection and protective coating where appropriate.
Our San Anselmo tune-up includes salt-corrosion inspection of the burner assembly and heat exchanger, combustion analysis for early CO detection, defrost-cycle verification calibrated for damp valley mornings, and flood-risk assessment if your unit’s in a crawlspace. We also check for undersizing common in homes with unpermitted additions. The $80–$200 range covers most standard gas furnaces.
Yes, and for many San Anselmo homes it’s the better long-term play. Heat pumps handle our mild winters efficiently and provide cooling for those 10–15°F hotter Ross Valley afternoons that catch coastal Marin residents off guard. Ductless mini-split heat pumps are especially practical here given the ductwork challenges in pre-1940 housing. We’ll assess your home’s insulation, electrical panel, and layout to confirm feasibility and sizing. Call (844) 560-6978 for a free estimate.
Ready to get your San Anselmo home heating right? Call Crestview Heating & Air California at (844) 560-6978 for a free estimate. Owner Marcus Feldman still manages every job personally, and we’ve got 19 years of HVAC experience plus 250+ customer reviews that average 4.8 stars to back it up. From emergency calls to full replacements in flood-prone crawlspaces, we’ll give you straight answers and options that fit your actual house.
Written by Marcus Feldman, Owner at Crestview Heating & Air California, serving San Anselmo and the greater Bay Area since 2005.