Fast, Reliable Heating & Furnace Across Kensington
Heating and furnace repair in Kensington, CA typically runs $150–$700 for repairs, $3,500–$7,500 for full replacement, and most calls are completed same-day. We’re familiar with the hill’s pre-WWII housing stock and the unique fire-safety requirements that come with living in a Very High Fire Hazard Severity Zone. If your floor furnace just quit on a cold December morning or your wall unit’s pilot won’t stay lit, call (844) 875-9451. We’ll give you a straight answer and a free estimate before any work starts.
Why Redwood Heating & Air San Diego Is Kensington’s Preferred Heating & Furnace Company
Gregory Hahn founded this company and still leads every technical decision. That means when you call for furnace work in Kensington, you’re getting a Master Technician’s judgment, not a dispatcher sending whichever crew is available. We’ve built 428 verified customer reviews averaging 4.6 stars over 13 continuous years, and that track record matters to homeowners who’ve already dealt with rushed repairs or one-brand-only dealers.
Our response time to Kensington is typically same-day for standard calls and within hours for emergency heating failures. We know the hill’s narrow streets, the parking constraints near Colusa Avenue and Arlington Avenue, and the reality that many Kensington homes have no driveway access for a full-size service van. That local knowledge saves time on every job.
We’ve also learned that Kensington customers research before they call. They want to know who’s actually showing up, what brands that person can service, and whether the quote will hold. We answer all of that upfront.
Our Heating & Furnace Services in Kensington
Furnace Repair
A typical furnace repair in Kensington runs $150–$700. Most calls involve original wall or floor furnaces from the 1920s–1950s that have developed cracked heat exchangers after decades of thermal cycling, worsened by the coastal moisture that channels through the hills from the Bay. We also see cast-iron gas valves fail when sediment from aging gas lines clogs the orifice. Parts for old Honeywell or Robertshaw valves are often discontinued, but our experience across nine major brands means we know where to source replacements or when to recommend upgrading instead of chasing obsolete components.
Furnace Replacement
Full furnace replacement in Kensington costs $3,500–$7,500 depending on whether we’re retrofitting into existing infrastructure or designing a new system from scratch. Nearly every Kensington installation is complicated by the lack of dedicated chase space for ductwork in these older homes. We replaced a 1940s floor furnace in a Tudor revival on the 200 block of Colusa Avenue. The homeowner insisted on a ductless mini-split retrofit because the plaster-and-lath walls offered no room for ductwork. We also added an ember-resistant attic vent screen after discussing fire-season safety, standard practice for anyone on the hill. That combination of heating replacement and fire-hazard retrofitting is typical for Kensington and rare in flatland East Bay cities.
Furnace Tune-Up
A furnace tune-up in Kensington runs $80–$200. Given the age of most heating equipment here, annual maintenance isn’t optional, it’s how you catch a cracked heat exchanger before it vents carbon monoxide into a craftsman bungalow with original windows that don’t seal tight. We inspect flame patterns, test gas pressure, check for corrosion on outdoor condenser coils, and verify that any attic vent screens are still ember-resistant. The marine layer moisture that keeps Kensington summers mild also accelerates corrosion on heat exchanger components, shortening equipment life compared to drier inland cities like Walnut Creek.
Heat Exchanger Repair and Replacement
Heat exchanger failure is the most serious problem we find in Kensington’s legacy furnaces. A cracked exchanger can leak carbon monoxide, and in homes with original plaster walls and limited ventilation, that risk is magnified. We test with combustion analyzers and visual inspection, and we’ll show you the crack rather than just telling you it’s there. Replacement costs vary based on whether the part is still available for your specific model; some pre-war units require full system replacement because the heat exchanger hasn’t been manufactured in decades. We service Carrier, Trane, Bryant, and American Standard equipment, plus five other major brands, so we can match the right solution to your existing setup.
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 Kensington
We service your brand. Gregory Hahn holds factory training or direct field experience across nine major HVAC brands: Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. For Kensington customers, this multi-brand fluency matters because many homes still run original equipment or replacement units installed by previous owners who may have chosen any manufacturer. We stock common parts for Bryant and American Standard systems locally, which means faster turnaround on repairs in Kensington without waiting for Bay Area distribution warehouses. From a single mini-split to a full commercial system, diagnosed right the first time.
Common Heating & Furnace Problems We See in Kensington Homes
- Cracked heat exchangers in original wall and floor furnaces. Decades of thermal cycling in pre-WWII units eventually fatigue the metal, and Kensington’s coastal moisture accelerates the corrosion. We catch this with combustion analysis during tune-ups before it becomes a CO hazard.
- Failed cast-iron gas valves in pre-war equipment. Sediment from aging East Bay gas lines clogs the orifice in old Honeywell or Robertshaw valves. Parts are often discontinued, so we evaluate whether repair is feasible or replacement is the safer long-term call.
- Kinked or torn flex duct in crawl spaces. With no dedicated chase space in these older homes, homeowners or previous contractors often patch together flex duct that gets damaged in tight crawl spaces or basements. This creates uneven heating and potential carbon monoxide backdraft risks.
- Corroded outdoor components from persistent marine layer moisture. The same hillside elevation that channels cooling fog through Kensington also shortens the life of heat exchanger components and condenser coils compared to drier inland locations.
Pricing for Heating & Furnace in Kensington, CA
We’re upfront about what heating and furnace work costs in Kensington. These are real ranges based on 13 years of Bay Area HVAC work:
| Service | Price Range in Kensington |
|---|---|
| Furnace Repair | $150 – $700 |
| Furnace Replacement | $3,500 – $7,500 |
| Furnace Tune-Up | $80 – $200 |
What moves the needle within these ranges? Access matters in Kensington. A floor furnace in a cramped basement with a 24-inch clearance costs more to repair than one in an open crawl space. Ductless mini-split retrofits in plaster-and-lath homes require more labor than replacements in homes with existing ductwork. And fire-hazard zone upgrades, ember-resistant vent covers, and smoke-tight duct sealing add material costs that flatland jobs don’t need. We quote everything before we start. Call (844) 875-9451 for an exact estimate, estimates are free.
We Also Serve Cities Near Kensington
Our Heating & Furnace team also works in El Cerrito, Albany, Richmond, and Berkeley. Each city has different housing stock, different code requirements, and different fire zone classifications, so the solutions we design for Kensington don’t always transfer directly. If you’re on the border near Arlington Avenue and aren’t sure whether you’re in Kensington or El Cerrito, call us and we’ll confirm your service area.
Serving Kensington, CA — Our Local Coverage Area
We’re based in the Kensington 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 Kensington
We can repair many 1940s floor furnaces if the heat exchanger is intact and gas valve parts are still available. If the heat exchanger is cracked or the valve is obsolete, replacement is the safer choice. We’ve retrofitted dozens of Kensington homes with ductless mini-splits when ductwork isn’t feasible. Call (844) 875-9451 and we’ll inspect yours for free.
Yes. Kensington sits in a Very High Fire Hazard Severity Zone, so we install ember-resistant vent covers and smoke-tight duct sealing as standard practice on the hill. These upgrades protect your home during fire season and are required by local codes for many retrofit projects. Flatland neighbors in Richmond or El Cerrito rarely need them.
Kensington’s marine layer moisture accelerates corrosion on heat exchanger components, while Walnut Creek’s drier inland climate causes less rust damage. The same coastal fog that keeps Kensington cool in summer shortens equipment life compared to drier East Bay cities. Annual tune-ups catch corrosion early before it leads to cracks.
Modern furnaces require proper attic ventilation for safe operation and code compliance. In Kensington’s fire zone, we install ember-resistant vent screens rather than standard attic vents. If your attic was never vented, we’ll design a solution that meets fire safety requirements without compromising your home’s protection during fire season.
Usually not without major structural modification. Plaster-and-lath walls in Kensington’s 1920s–1950s homes have no chase space for ductwork. We typically recommend ductless mini-split systems or high-velocity small-duct solutions instead. We’ve completed many of these retrofits on Colusa Avenue and throughout the Kensington hills. Call (844) 875-9451 for a free assessment of your specific layout.
Written by Gregory Hahn, Owner at Redwood Heating & Air, serving Kensington and the East Bay since 2011.