Seasonal tune-up and full diagnostic on your Carrier, Trane, or Goodman system - readings shown to you before any repair is proposed
Diagnosis first, numbers second - you approve the repair price before a single part goes in.
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AfterFast, Reliable Furnace Repair Across Fairfax
Furnace repair in Fairfax typically runs $150 – $700, and most repairs are done the same day we arrive. When your heat goes out in January and the fog is sitting low over Sir Francis Drake Boulevard, you don’t have time to wait on a callback. You need a technician who shows up inside the stated window, puts the price in writing before touching a screw, and stands behind the work for a full year. That’s how our Furnace Repair team operates in Fairfax, every single call. Reach a live person 24 hours a day at (361) 306-9515.
Fairfax’s older homes, narrow lots, and hillside exposures mean furnace problems here don’t always look like the textbook case. A house on one side of the creek can be 10 degrees warmer than a place up on the ridge. We know that because we work these streets regularly, from the flats near Bolinas Road up to the steeper grades off Cascade Drive.
Why Dalton Heating & Air Is Fairfax’s Preferred Furnace Repair Company
Dalton Heating & Air has served Fairfax under The Garrison Standard since 2003. That means a written price before any work starts, on every job, without exception. No technician shows up and starts “finding things” once the ladder is out. The price is on paper first. If you don’t like it, we shake hands and leave. That discipline is why Fairfax homeowners call us back when the next problem shows up.
Our technicians are background-checked and uniformed, and you’ll know who is coming before they arrive. Live phone support is staffed by a real person around the clock. Not a voicemail queue. Not a chatbot. When your furnace fails at 11:30pm on a cold night off Manor Road, you call and a person answers. That is the standard, and it is non-negotiable.
Every repair carries a written guarantee for a full year. If the repair fails inside that period, we return at no charge. That’s the 365-Day Done Right Promise, and it applies to every furnace job we do in Fairfax, including the smaller ones.
Key Takeaways:
- Furnace repair in Fairfax: $150 – $700, written price upfront
- Live phone answer, 24/7, no voicemail queue
- Full-year written guarantee on every repair, free return visit if it fails
- Background-checked, uniformed technicians who arrive inside the window
Heat Pump Repair in Fairfax
Heat Pump Repair in Fairfax comes down to one recurring problem: the system has been running in heating mode since October and nobody thought about it until it stopped. Fairfax’s shoulder seasons are long, and plenty of homes here lean on a heat pump for heat before the furnace ever kicks in. That means by midwinter, the reversing valve, the defrost board, and the outdoor coil have all been working hard. We check all three on every heat pump call, not just the part the homeowner thinks failed. Most heat pump repairs in Fairfax fall in the $150 – $700 range, same as furnace work.
Refrigerant And Coil Checks
A heat pump that’s low on refrigerant, meaning the cooling fluid that moves heat between the indoor and outdoor units, will blow lukewarm air and run constantly trying to reach set temperature. We find and seal the leak before recharging, because topping off a leaking system is throwing money away. On older Fairfax units, the outdoor coil is often the culprit, blocked by redwood duff or shaded into a permanent damp state.
Defrost And Reversing Valve Repairs
When a heat pump runs in heat mode and the outdoor coil ices over, the defrost board has to kick in. If it fails, the unit turns into a block of ice and your house starts losing heat. We test the defrost cycle, the reversing valve that switches the system between heating and cooling, and the thermostat wiring on the same visit. Two of these three parts are usually fine. One is not. We fix the one.
Heating Repair in Fairfax
Heating Repair in Fairfax isn’t a generic category; it’s the work of figuring out why a specific house on a specific hillside isn’t warming up. Fairfax’s older housing stock means we see a lot of systems that were installed when square footage was the only sizing rule. Too often, that resulted in an oversized furnace that short-cycles, meaning it fires up, slams the house with heat, shuts off, and repeats. Short-cycling strains capacitors, blower motors, and ignitors, and those are exactly the parts that fail first in Fairfax. Typical heating repair work here runs $150 – $700 depending on the part.
Ignition And Gas Valve Service
A furnace that won’t light in Fairfax is often a dirty flame sensor or a failing ignitor, not a dead unit. We clean and test the flame sensor first, then check the gas valve with a manometer to verify gas pressure. These are 20-minute checks that prevent someone from selling you a furnace you don’t need. The Garrison Code is explicit: do the job by the book, not by the commission.
Blower Motor And Capacitor Replacement
On a no-heat call off Sir Francis Drake Boulevard, we found a Lennox furnace with a failed blower motor. The homeowner had been told a full replacement was the only option. We tested the capacitor, verified the heat exchanger, and replaced the blower motor. The system fired reliably that afternoon. Because Fairfax homes are smaller and more varied than the flatlands, a room-by-room load calculation showed the existing tonnage was actually right. The guy saved thousands. That’s the job.
Trusted Brands We Service in Fairfax
Our technicians are factory-trained on nine major residential HVAC brands, and in Fairfax we regularly service Rheem, Bryant, and Daikin equipment along with the rest. We maintain a stocked van fleet for Fairfax calls, so common parts like ignitors, flame sensors, capacitors, and blower motors are usually on the truck when we arrive. That matters when you’ve got a cold house and a kid with a fever. Fewer trips to the supply house means your furnace is running sooner. If your system uses a less common part, we source it same day from Bay Area distributors.
Common Furnace Repair Problems We See in Fairfax Homes
- Oversized furnaces short-cycling on older homes: Fairfax has a lot of smaller houses built before load calculations were standard practice. An oversized furnace overshoots the set point, shuts down, then fires again minutes later. That constant cycling eats capacitors and blower motors.
- Cracked heat exchangers from years of skipped service: Homes here that run a heat pump for shoulder-season heating often neglect the furnace entirely for half the year. When the furnace finally takes over in deep winter, the heat exchanger has gone uninspected for seasons. Cracks are a safety issue, and we test for them on every repair call.
- Failed capacitors from constant on/off cycling: When the thermostat is set too high in winter, the furnace and blower cycle relentlessly. Capacitors fail under that strain. It’s a $150 – $350 fix most of the time, not a replacement.
- Ignitors that crack without warning: Fairfax’s damp winter shoulder months, especially in the shaded canyons off Cascade Drive, put extra stress on ceramic ignitors. A cracked ignitor means no ignition at all, even though the rest of the furnace is fine.
Pricing for Furnace Repair in Fairfax, CA
| Service | Price Range |
|---|---|
| Furnace Repair | $150 – $700 |
| AC Repair | $150 – $650 |
| AC Installation | $3500 – $7500 |
| Tune-Up | $80 – $200 |
Where a furnace repair lands inside that $150 – $700 window depends on the part. An ignitor or flame sensor replacement sits at the low end. A blower motor or gas valve runs higher. Before any work begins, you get a written price. That number does not move once the repair starts, and it includes the one-year written guarantee. Every estimate is free. Call (361) 306-9515 and Marco Benitez or a member of our Fairfax dispatch team will get you scheduled for the next available window.
We Also Serve Cities Near Fairfax
Dalton Heating & Air handles furnace repair for homeowners in San Anselmo, Kentfield, San Rafael, and Larkspur as well. Same written pricing, same one-year guarantee, same live 24/7 phone answer. If you’re in one of those towns and your furnace is down, we can usually get a tech to you the same day from our Fairfax-area routes. Call (361) 306-9515.
Serving Fairfax, CA - Our Local Coverage Area
We’re based in the Fairfax 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 About Furnace Repair in Fairfax
Most furnace repairs in Fairfax run $150 – $700, depending on the part that failed. An ignitor or flame sensor is at the low end; a blower motor or gas valve is at the high end. You get a written price before any work starts, and every repair carries a full-year written guarantee. Call (361) 306-9515 for a free estimate.
Not always, but we run one whenever the question is repair versus replace. Fairfax’s microclimates, with fog along Sir Francis Drake Boulevard and warmer ridges above, mean two homes a mile apart can need different furnace sizing. A room-by-room load calculation tells us whether your existing unit is sized right. If it is, a repair makes sense. If it isn’t, we’ll show you the numbers before recommending anything.
Failed capacitors and cracked ignitors top the list, usually from short-cycling caused by oversized furnaces in older Fairfax homes. The constant on/off cycling wears out electrical components years before they should fail. Most of these repairs run under $350. That’s a lot cheaper than the replacement someone else might try to sell you.
Usually a repair. Cold air most often means a failed ignitor, a dirty flame sensor, or a tripped limit switch, all repairable parts. Before anyone tells you to replace the furnace, ask for a room-by-room load calculation and a written itemization of the repair cost. In Fairfax we’ve seen too many older furnaces condemned overfixable issues. Get a second look. Call us at (361) 306-9515 and we’ll tell you straight.
Yes. Heat pump repair is a major part of our Fairfax work, especially in the shoulder seasons when the pump handles heating and the furnace sits idle. We service Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. Same written pricing, same one-year guarantee. Call (361) 306-9515 to schedule.
Written by Marco Benitez, Owner at Dalton Heating & Air, serving Fairfax and the surrounding Bay Area under The Garrison Standard since 2003.