Heating & Furnace in Corte Madera — Same-Day Service, Done Right the First Time

Fast, Reliable Heating & Furnace Across Corte Madera

Furnace repair in Corte Madera typically costs $150–$700, while a full furnace replacement runs $3,500–$7,500. Most service calls in the 94925 and 94976 ZIP codes are handled same-day or next-day. Call (855) 467-1888 for a free estimate.

Call (855) 467-1888

We’ve been driving our Heating & Furnace trucks across the Corte Madera flatlands and up the Ring Mountain hillside roads for 16 years. Jason Trent, our owner and Field Supervisor, knows the difference between a hillside split-level with zone dampers and a 1955 ranch on Madera Boulevard with original galvanized ductwork sitting six inches above a moisture-wicking crawl space. That local knowledge matters when your furnace quits on a January morning and the house won’t break 55 degrees. We’re familiar with the salt-air corridor off Richardson Bay, the persistent marine layer that keeps summer mild but crawl spaces wet, and the specific failure patterns that hit Corte Madera’s mid-century housing stock harder than anywhere else in Marin.

Why Stonegate Heating & Air California Is Corte Madera’s Preferred Heating & Furnace Company

Our reputation in Corte Madera was built job by job, not through marketing campaigns. We’ve got 499 verified customer reviews averaging 4.7 stars across platforms, and a meaningful chunk of those come from repeat calls in the flatlands and hillside neighborhoods alike. Homeowners here research before they dial. They check review volume, they look for owner accountability, and they want to know the same technician won’t need a GPS to find the house next time.

Jason Trent supervises every project as Field Supervisor. He’s on job sites, crawling under houses, checking duct runs, and signing off on heat-exchanger inspections. In Corte Madera, where the dominant HVAC challenge is retrofitting modern equipment into aging, moisture-compromised systems, that hands-on oversight prevents the kind of callbacks that plague franchise operations.

Response time to Corte Madera is typically same-day for emergency calls and next-day for standard service requests. We stock parts for Carrier, Trane, Lennox, and Goodman systems locally, which matters when your 1960s furnace’s gas valve fails and you can’t wait a week for a warehouse shipment. From a single-room mini split to a full commercial system, we handle the scope without passing you off to subcontractors.

Our Heating & Furnace Services in Corte Madera

Furnace Repair

Furnace repair in Corte Madera runs $150–$700 depending on the component and accessibility. The most common calls we get in the flatlands aren’t burner failures or blower motor deaths. They’re corrosion-related: rusted heat exchangers, compromised flue pipes, and gas valves seized from years of salt-air exposure wicking up through crawl spaces. We crawled under a 1950s ranch on San Clemente Drive near the bay and found the original sheet-metal plenum rusted through at the seams. Salt air had wicked up through the crawl space for decades, and the 60-year-old Carrier furnace was actually still firing, but the ductwork was crumbling. We retrofitted a new Lennox heat-pump system with sealed, insulated ductwork and a dedicated vapor barrier under the house. That’s the kind of repair-versus-replace judgment call we make regularly in Corte Madera.

Furnace Replacement

A full furnace replacement in Corte Madera costs $3,500–$7,500, with the upper end covering heat-pump conversions that include ductwork remediation. This is where our local expertise pays off most clearly. Much of Corte Madera’s residential flatlands were built in the 1950s–60s on land immediately adjacent to, and in some cases atop filled portions of, Richardson Bay tidal marsh. That leaves crawl spaces with persistently elevated moisture that corrodes ductwork and HVAC components faster than in any inland Marin town. Salt-laden bay breezes off Richardson Bay simultaneously attack outdoor condensing units and heat-pump components, shortening equipment life noticeably compared to hillside Marin communities even a mile or two away. The dominant HVAC job here is retrofitting modern heat-pump systems into these aging, moisture-compromised forced-air skeletons that were originally designed with no cooling whatsoever. We size equipment for the actual thermal load, accounting for single-pane windows and minimal insulation, not just the square footage on the permit.

Furnace Tune-Up

Our furnace tune-ups in Corte Madera cost $80–$200 and include combustion analysis, heat-exchanger inspection, and crawl-space ductwork assessment. The marine humidity here changes what “routine maintenance” means. In Corte Madera’s corridor where cool, moist air funnels off Richardson Bay through the US-101 gap, summer highs stay unusually mild while producing a persistent marine-humidity baseline higher than even nearby San Rafael or Novato. This suppresses demand for cooling but accelerates rust and mold inside duct systems, especially in the crawl-space-heavy flatland homes. We check for visible mold on flex-duct vapor barriers, corrosion on galvanized plenums, and salt buildup on outdoor coils. A standard tune-up in Phoenix checks for dust. In Corte Madera, we check for decay.

Heat Exchanger Inspection & Replacement

Heat exchanger failure is a safety issue, not a comfort issue. Cracked or corroded exchangers can leak carbon monoxide into living spaces. In Corte Madera, we see heat exchangers fail prematurely not from over-firing or age, but from the stress of short-cycling caused by blocked, mold-compromised ductwork. When airflow is restricted by collapsed flex duct or rusted plenum seams, the furnace overheats, cycles off on high limit, cools, and restarts. That thermal shock cracks exchangers in units that should have years of life left. We inspect with cameras and combustion analyzers, and we replace with exchangers rated for the actual operating conditions we find in your crawl space.

Ignitor Replacement & Gas Valve Repair

These are the smaller repairs that keep Corte Madera furnaces running through winter. Hot-surface ignitors in 1990s-era Goodman and Carrier units are common failure points, and gas valves on marsh-adjacent properties can corrode at electrical connections. We carry replacement ignitors for all nine brands we service, and we test gas pressure and valve operation as part of every repair. If your furnace is clicking but not lighting, or lighting but shutting down within seconds, it’s usually a $150–$400 fix. We’ll tell you if it’s worth doing.

Trusted Brands We Service in Corte Madera

We’re certified and experienced on nine leading HVAC brands: Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. For Corte Madera customers, that means no “we don’t service that brand” dead end. We stock common parts for Carrier, Trane, Lennox, and Goodman locally, which cuts wait times for flatland and hillside calls alike. Whether your 1970s Trane is limping through another winter or you’re ready to replace a rusted-out Rheem with a modern Daikin heat pump, our technicians have factory training and field experience on the equipment. Fast turnaround matters in Corte Madera, where January nights drop into the 30s and a failed furnace isn’t a tomorrow problem.

Common Heating & Furnace Problems We See in Corte Madera Homes

• Corroded outdoor heat-pump coils from salt-laden bay breezes. The marine air off Richardson Bay carries enough salt to pit condenser fins in as little as 5–7 years, requiring premature replacement despite a functional furnace. We see this on properties within a few blocks of the shoreline, and even some farther inland where prevailing winds channel through the US-101 gap.
• Mold-compromised flex duct in flatland crawl spaces. The water table under portions of the flatlands is close enough to the old marsh grade that moisture wicks into unconditioned crawl spaces year-round. Any flex duct installed without proper vapor barriers typically shows visible mold within a few seasons, blocking airflow and short-cycling the furnace.
• Oversized or undersized furnaces struggling with single-pane windows and minimal insulation. Original 1950s–60s ranches on Madera Boulevard and surrounding streets were built with no attic insulation and single-pane glass. A standard furnace sized by square footage alone can’t keep up, leading to constant running, uneven heating, and premature component failure.
• Failed heat exchangers from short-cycling caused by restricted airflow. When rusted plenum seams or collapsed ductwork choke airflow, the furnace overheats and cycles on high limit. That repeated thermal stress cracks exchangers that would otherwise last 15–20 years. It’s a hidden failure mode we catch during tune-ups.

Pricing for Heating & Furnace in Corte Madera, CA

We Also Serve Cities Near Corte Madera

Our service area covers all of central and southern Marin County. We regularly run calls to Larkspur, Mill Valley, Tamalpais Valley, and Tamalpais-Homestead Valley. Each of these communities has distinct HVAC challenges, from Larkspur’s mixed Victorian and mid-century stock to Mill Valley’s canyon microclimates. Our Heating & Furnace team knows the difference and sizes equipment accordingly.

FAQs — Heating & Furnace in Corte Madera