Fast, Reliable AC Repair & Installation Across Corte Madera
AC repair in Corte Madera typically runs $150–$650, while full AC installation for the area’s aging ranch homes ranges from $3,500–$7,500. Most repairs are completed same-day, and our AC Repair & Installation team carries parts for Carrier, Trane, Lennox, and other major brands so we don’t waste your afternoon on a return trip.
We’ve been driving to Corte Madera since 2009. Jason Trent, our owner and Field Supervisor, knows the difference between a hillside job off Ring Mountain and a flatlands crawl space near Paradise Drive. The moisture problems in those old marsh-fill neighborhoods aren’t a surprise to us. We’ve pulled apart enough corroded ductwork to know what we’re walking into, and we stock the marine-grade materials that last here. Call (855) 467-1888 for a free estimate.
Why Stonegate Heating & Air California Is Corte Madera’s Preferred AC Repair & Installation Company
Sixteen years in business and nearly 500 verified reviews at 4.7 stars means we’ve earned our reputation one job at a time. Corte Madera homeowners aren’t looking for a sales pitch. They’re looking for someone who shows up, diagnoses the actual problem, and fixes it without disappearing into a phone tree.
Jason Trent supervises every project personally. He’s not managing from a back office in Sacramento. He’s on-site, checking that duct sealing holds up in a salt-air crawl space, confirming a heat pump install clears the clearances for bay-side wind exposure. That accountability matters in a town where word travels fast.
We carry factory training on nine brands: Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. Whatever system is in your Corte Madera home, we’ve worked on it. No “we don’t service that brand” dead ends.
Our response time to Corte Madera is typically same-day for repairs, and we schedule installations within a week. Emergency HVAC service is available when the system dies during a rare heat spike or when a failed heat pump leaves you without heat in January.
Our AC Repair & Installation Services in Corte Madera
AC Repair
Corte Madera’s salt-laden bay breezes off Richardson Bay chew through outdoor condensers faster than inland Marin. We see capacitor failures, compressor electrical damage, and refrigerant leaks in units that are technically “only” eight years old but look fifteen. A typical AC repair in Corte Madera runs $150–$650. We diagnose first, explain what’s actually broken, and repair with components rated for corrosive air.
AC Installation
Most flatland homes in Corte Madera were built in the 1950s and 60s with no central air. Installing cooling into these slab or shallow crawl-space foundations takes planning. We size heat pumps for the actual load, not the square footage on a chart, and we spec equipment with coated coils and marine-grade hardware. AC installation in Corte Madera ranges from $3,500–$7,500 depending on system size, duct condition, and whether we’re retrofitting into existing forced-air or starting fresh.
AC Replacement
Replacing an AC in Corte Madera often means confronting what the old system left behind: corroded duct runs, mold in flex lines, a plenum held together with tape and hope. We don’t drop a new unit on top of a rotted infrastructure. Jason inspects the full system, and we quote replacement as a complete job, not a box swap. This is especially critical in the 94925 zip, where we’ve found galvanized ductwork from the Kennedy era still in service.
Refrigerant Recharge
Low refrigerant in Corte Madera usually means a leak, not normal consumption. Salt corrosion attacks flare fittings and coil fins, creating pinhole leaks that bleed R-410A slowly. We leak-test with electronic detectors and nitrogen pressure tests, repair the source, then recharge to factory spec. A recharge without finding the leak is throwing money into Richardson Bay.
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 Corte Madera
We maintain active certification and hands-on experience with Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. For Corte Madera customers, this means we don’t need to special-order basic parts or defer to a “factory authorized” shop across the bridge. Our trucks carry capacitors, contactors, and refrigerant for the brands we see most often in Marin County. When a Trane condenser fails on a Sunday or a Lennox heat pump throws a pressure fault, we fix it without waiting on a warehouse in San Jose.
Common AC Repair & Installation Problems We See in Corte Madera Homes
- Moisture-wicked duct corrosion. The old marsh fill under Corte Madera’s flatlands keeps crawl spaces damp year-round. Galvanized steel ducts rust through, flex duct grows mold, and homeowners smell it before they see it. We replace with sealed, insulated systems designed for wet ground contact.
- Salt-air condenser failure. Outdoor units within a half-mile of Richardson Bay corrode faster than manufacturer estimates predict. Coils pit, electrical terminals green over, and fan motors seize. We install coated-coil models and recommend more frequent maintenance for bay-side properties.
- Oversized equipment on undersized ducts. A previous contractor slapped a 3.5-ton unit on 1950s ductwork never designed for cooling. The system short-cycles, humidity stays high, and the compressor dies young. We measure static pressure and airflow before specifying any replacement.
- Heat pump retrofit complexity. Converting a 1960s ranch from no cooling to a heat pump means dealing with crawl spaces too tight for standard air handlers, electrical panels at capacity, and no good place for a condensate drain. We’ve solved these problems on Paradise Drive, on Madera Boulevard, and on the hillside streets below Ring Mountain.
Pricing for AC Repair & Installation in Corte Madera, CA
| Service | Typical Range in Corte Madera |
|---|---|
| AC Repair | $150–$650 |
| AC Installation | $3,500–$7,500 |
| Tune-Up / Maintenance | $80–$200 |
What moves a job toward the higher end? Crawl-space duct replacement adds labor and materials. Electrical panel upgrades to handle heat pump loads add cost. Access issues, hillside equipment pads, or condensate pump installations in homes with no gravity drain all factor in. We price upfront after inspection, not after surprise. Call (855) 467-1888 for a free estimate on your specific Corte Madera home.
We Also Serve Cities Near Corte Madera
Our service radius covers all of central and southern Marin. We regularly work in Larkspur, Mill Valley, Tamalpais Valley, and Tamalpais-Homestead Valley. The same salt-air and moisture issues affect homes throughout the Richardson Bay corridor, and the same owner-supervised approach applies whether we’re on Magnolia Avenue or up on the Panoramic Highway.
Serving Corte Madera, CA — Our Local Coverage Area
We’re based in the Corte Madera 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 — AC Repair & Installation in Corte Madera
Your ducts smell like low tide because moisture from the old marsh fill beneath Corte Madera’s flatlands is wicking into your crawl space, condensing on cool duct surfaces, and growing mold in unsealed flex lines. We see this constantly in 94925 ranch homes. The fix is sealed, insulated ductwork with proper vapor barriers, not air fresheners. Call (855) 467-1888 and we’ll inspect your crawl space for free.
Outdoor units in Corte Madera typically last 10–12 years instead of the 15-year inland standard, with bay-side properties hitting the shorter end. Salt corrosion accelerates coil and electrical degradation. We recommend annual maintenance with coil cleaning and terminal inspection, and we spec coated-coil equipment for replacements. If your condenser is 8+ years old and showing rust, call (855) 467-1888 for an honest assessment.
Yes. We’ve retrofitted dozens of Corte Madera ranches with high-velocity mini-duct systems and compact air handlers that fit tight crawl spaces without major structural changes. In the flatlands off Paradise Drive, we replaced a rusted-out 1960s galvanized duct run in a crawl space that smelled of salt and mud; the old flex duct had visible mold after just three seasons without a vapor barrier. We installed a sealed high-velocity mini-duct system with marine-grade insulation and a new heat pump rated for corrosive bay air. Every home is different, so we inspect before quoting. Call (855) 467-1888 for a free estimate.
This question belongs to our garage door division, not AC installation. If you’re looking for garage door service in Corte Madera, we can refer you. For HVAC on acreage properties, the relevant issue is often separate systems for detached structures. We install mini-splits and ductless units for workshops, ADUs, and outbuildings that aren’t tied to the main house ductwork. Call (855) 467-1888 to discuss your specific setup.
Carrier and Trane both offer coastal-corrosion packages with coated coils and sealed electrical compartments that hold up well in Corte Madera. Lennox has similar options. The “best” brand depends on your home’s duct configuration, electrical capacity, and whether you’re heating with the same system. We don’t push one brand. We match equipment to conditions. Jason Trent will walk you through the options on-site. Call (855) 467-1888 to schedule.
Written by Jason Trent, Owner and Field Supervisor at Stonegate Heating & Air California, serving Corte Madera and Marin County since 2009.