Fast, Reliable Heating & Furnace Across Kentfield
Heating and furnace repair in Kentfield typically costs $175–$825, with most jobs completed same-day or next-day by our local team. We’re Crestview Heating & Air California, and our Heating & Furnace crew knows Kentfield’s older homes inside and out. From the original hydronic boilers on College Avenue to the aging gas furnaces in the 1970s neighborhoods off Wolfe Grade, we’ve been keeping Kentfield warm for nearly two decades. Call us at (844) 560-6978 for a free estimate.
Kentfield isn’t like the rest of Marin County. The Ross Valley shelters this unincorporated community from direct coastal influence, so morning fog and 50°F nights can swing to 90°F afternoons in July and August. That 40-degree daily temperature range puts serious stress on heating systems that also need to fire up reliably when the cold snap hits. We’ve responded to emergency no-heat calls on Evergreen Avenue at 6 a.m. and traced failed ignitors back to thermal expansion cracks that only happen in climates with this kind of volatility.
Why Crestview Heating & Air California Is Kentfield’s Preferred Heating & Furnace Company
Our reputation in Kentfield was built one house at a time. We’ve got 250+ verified reviews averaging 4.8 stars, and a significant share of those come from Kentfield homeowners who found us after out-of-area contractors couldn’t navigate the county’s permit process or didn’t understand the town’s legacy heating systems.
Owner Marcus Feldman serves as our Service Manager, which means the person answering your questions about a rusted Weil-McLain heat exchanger is the same person who’ll make sure the job gets done right. No dispatch center. No franchise script. Just 19 years of hands-on HVAC experience applied to your specific system.
We carry parts for Trane, Lennox, Goodman, and Rheem units on our trucks, and we maintain relationships with suppliers who can source same-day components for the older brands still running in Kentfield’s 1930s–1960s housing stock. That matters when your boiler fails on a Friday night and the weekend forecast calls for lows in the 40s.
Our Heating & Furnace Services in Kentfield
Furnace Repair
Furnace repair in Kentfield runs $175–$825 depending on the component and system age. We regularly repair Goodman and Rheem gas valves on 1970s furnaces in the neighborhoods off Sir Francis Drake Boulevard, where summer idleness causes valves to stick shut when the first fall cold front arrives. We also service the original boiler-fed hydronic systems in Kentfield’s older custom homes, tracking down heat exchanger corrosion and circulation pump failures that most modern HVAC shops won’t touch.
Furnace Replacement
When a furnace has reached the end of its useful life, replacement becomes the smarter investment. In Kentfield, this decision is complicated by the town’s architectural heritage. Many homes on College Avenue and Evergreen Avenue were built with plaster-and-lath walls and no duct chases, making traditional forced-air installation highly invasive. We evaluate whether a high-efficiency ductless mini-split system or a modern hydronic boiler better serves the home’s structure and the owner’s budget. Every replacement we perform routes permits through the Marin County Community Development Agency, where we handle the Title 24 documentation and BAAQMD gas-appliance compliance that out-of-area contractors often miss.
Furnace Tune-Up
A furnace tune-up in Kentfield costs $95–$235 and typically takes 60–90 minutes. Given the Ross Valley’s temperature swings, we inspect components that pure coastal climates don’t stress as heavily: ignitor ceramics for thermal cracking, gas valve diaphragms for summer-atrophy sticking, and heat exchanger integrity after decades of expansion-contraction cycles. We recommend annual tune-ups in September, before the first serious cold front tests systems that have been essentially idle since May.
Heat Exchanger Repair & Replacement
Heat exchanger failure is the most serious issue we encounter in Kentfield’s legacy homes. Original boiler heat exchangers on 1930s–1960s systems corrode from decades of cycling, and a cracked exchanger can leak carbon monoxide into living spaces. We recently serviced a 1950s home on College Avenue whose original hydronic boiler-fed radiant system had a rusted heat exchanger, leaving the homeowners without heat during a July cold snap. We replaced the heat exchanger in the existing Weil-McLain boiler and tuned the system to meet Kentfield’s unique afternoon heating demands, avoiding the cost and invasiveness of a full ducted conversion. This kind of targeted repair, preserving the original system’s architecture, is often the right call in Kentfield’s historically significant properties.
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 Kentfield
Your system, our specialty. We factory-train on nine major brands — Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard — and we stock common parts for Trane, Lennox, Goodman, and Rheem on our Kentfield service trucks. That inventory matters when you’re dealing with a 1970s Rheem gas valve that hasn’t been manufactured in 15 years, or a cracked Carrier ignitor that needs same-day replacement before tonight’s temperature drop. We source through distributors who maintain legacy component lines specifically for Marin County’s older housing stock, so “discontinued” doesn’t automatically mean “replace the whole system.”
Common Heating & Furnace Problems We See in Kentfield Homes
- Corroded boiler heat exchangers in pre-1960s homes. The original hydronic systems on College Avenue and Evergreen Avenue cycle heavily through Kentfield’s 40°F daily temperature swings, accelerating metal fatigue and rust-through. We test exchanger integrity with combustion analysis and visual borescope inspection.
- Stuck gas valves on 1970s–1980s furnaces. Goodman and Rheem valves in the Wolfe Grade area commonly seize after summer idleness, failing to open when autumn arrives. We clean, test, and replace these valves before they leave you without heat on the first cold morning.
- Cracked ignitors from thermal shock. Carrier and Trane hot-surface ignitors in Kentfield fail prematurely because the Ross Valley’s sharp temperature swings cause repeated expansion and contraction. We upgrade to OEM-spec ceramics rated for wider thermal ranges.
- Undersized heating for post-radiant retrofits. Homeowners who’ve added ductless mini-splits for cooling sometimes discover their legacy heating can’t handle genuine winter cold. We evaluate integrated solutions that don’t require tearing open plaster walls.
Pricing for Heating & Furnace in Kentfield, CA
Here’s what heating and furnace work actually costs in Kentfield’s market:
| Service | Price Range |
|---|---|
| Furnace Repair | $175–$825 |
| Furnace Tune-Up | $95–$235 |
| Heat Exchanger Repair | $400–$1,200 |
| Ignitor Replacement | $150–$350 |
| Gas Valve Repair | $200–$450 |
Costs in Kentfield run slightly higher than pure coastal Marin due to the specialized knowledge required for legacy hydronic systems and the county’s rigorous permit documentation. A heat exchanger replacement on a 1950s Weil-McLain boiler, for instance, involves combustion testing and BAAQMD compliance steps that don’t apply to standard forced-air swaps in San Jose. We provide upfront pricing before any work begins, and estimates are always free. Call (844) 560-6978 to schedule.
We Also Serve Cities Near Kentfield
Our service radius covers the full Ross Valley and surrounding Marin communities. We regularly respond to heating calls in Larkspur, where the closer coastal influence means different humidity stresses on furnace components; San Anselmo, with its similar mix of 1920s–1960s housing stock; Corte Madera, where newer construction presents fewer legacy-system challenges; and Fairfax, where hillside exposure creates its own microclimate heating demands. The same owner-managed service that Kentfield homeowners trust extends to every neighboring community.
Serving Kentfield, CA — Our Local Coverage Area
We’re based in the Kentfield 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 Kentfield
Yes, all furnace replacements in Kentfield require a permit from the Marin County Community Development Agency because the town is unincorporated. We handle the entire permit application, Title 24 energy compliance documentation, and BAAQMD gas-appliance certification as part of our installation service. Out-of-area contractors often get caught off-guard by these county-level requirements. Call (844) 560-6978 and we’ll walk you through the timeline.
Absolutely. We specialize in the boiler-fed hydronic systems found throughout Kentfield’s older neighborhoods, including the homes on College Avenue and Evergreen Avenue. We service the boiler, heat exchanger, circulation pumps, and zone valves without touching your walls or floors. If you’re considering adding cooling, we typically recommend ductless mini-splits rather than invasive duct installation.
Kentfield’s 40°F daily temperature swings cause repeated thermal expansion and contraction in hot-surface ignitors, particularly on aging Carrier and Trane units. The ceramic material fatigues faster here than in climates with stable temperatures. We replace failed ignitors with OEM-spec components rated for wider thermal ranges, and we inspect gas valve timing to ensure the ignitor isn’t overworking. Call (844) 560-6978 for diagnosis.
Repair is usually justified if the heat exchanger is sound and the repair costs less than 40% of replacement. In Kentfield’s architecturally significant homes, preserving the original system often avoids the cost and disruption of retrofitting ductwork into plaster-and-lath walls. We give honest assessments based on combustion testing and remaining service life, not sales quotas. Free estimates make the math clear.
Yes. Marin County inspectors enforce California Title 24 compliance and BAAQMD gas-appliance rules with particular rigor, requiring documented combustion analysis, airflow verification, and energy-efficiency calculations that some municipalities don’t demand. We perform these tests during installation, not as an afterthought, so inspections pass on the first visit. This is another reason Kentfield homeowners benefit from a local contractor who knows the county’s process.
Ready to get your Kentfield home’s heating system sorted? Whether it’s a rusted heat exchanger on a 1950s boiler, a stuck gas valve on a 1970s furnace, or you’re weighing repair against replacement in a home with no ductwork, we’ll give you straight answers and upfront pricing. Call Crestview Heating & Air California at (844) 560-6978 for your free estimate. Owner Marcus Feldman still manages every job personally, and we’ve got 19 years of HVAC experience ready for your call.
Written by Marcus Feldman, Owner at Crestview Heating & Air California, serving Kentfield and the San Jose area since 2005.