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.
Before
After
Before
After
Before
AfterHVAC Company in Fairfax, CA
Fairfax homeowners typically pay $150 – $700 for HVAC repairs and $3,500 – $7,500 for new system installations, with most service calls completed same-day when you call (984) 538-9003. We’re Brandt HVAC, and we handle the specific challenges that come with Fairfax’s older housing stock and inland valley climate. Our technicians are background-checked, photo-badged, and introduced by name before every visit under our Threshold Verified standard.
Why Fairfax Homes Are Different
Fairfax sits in a sheltered inland valley that traps summer heat while coastal Marin stays fog-cool. On the same August afternoon, we regularly see 90°F+ temperatures here while Sausalito hovers in the low 70s. That 15 – 20°F gap matters because Fairfax’s dominant housing stock, 1920s – 1950s craftsman bungalows and hillside cottages, was built with zero cooling infrastructure. Virtually every AC installation we do here is a ductless mini-split retrofit shoehorned into an old, often quirky structure.
These homes bring real complications. Plaster walls, shallow attic clearances, and no existing ductwork are standard. Informal DIY renovations from past decades mean we often uncover knob-and-tube or early aluminum wiring that requires coordinating with an electrician before HVAC work can proceed. Marin County’s permit and inspection regime adds necessary but strict oversight. Winter nights on the valley floor run damp and near-freezing, and single-pane windows with uninsulated walls drive heating demand the original builders never anticipated.
Fairfax also borders MMWD watershed wildlands and fire-prone chaparral ridgelines. During Marin County wildfire events, smoke infiltration into these leaky older homes is severe. We field frequent calls about upgrading to MERV-13 or HEPA filtration and sealing duct bypasses specifically to manage air quality, a conversation that comes up far less often in more urbanized neighboring cities.
Our Main Fairfax Services
These are the three services Fairfax homeowners call us about most, each with its own dedicated Fairfax page.
AC Repair in Fairfax
AC repair in Fairfax means diagnosing compressor failures, refrigerant leaks, and capacitor burnout in systems working overtime during valley heat events. We see a lot of mini-split line-set issues from critters in the hillside crawl spaces, and condensate drain clogs from the area’s heavy pollen seasons. Every repair starts with a written price and ends with a 365-Day Done Right Promise. AC Repair in Fairfax
Furnace Repair in Fairfax
Furnace repair here often involves igniter replacement in aging gas units, heat exchanger inspection for safety, and addressing airflow restrictions from decades of dust in original ductwork. The damp valley winters stress ignition systems, and we’ve replaced more failed blower motors in Fairfax than in drier parts of Marin. We show you the part, explain the fix, and give you the price in writing before starting. Furnace Repair in Fairfax
AC Maintenance in Fairfax
AC maintenance in Fairfax focuses on keeping mini-split systems efficient through heavy use periods and preparing older equipment for wildfire smoke filtration demands. We clean coils clogged with valley dust and pollen, check refrigerant levels stressed by long run times, and test filtration systems. Our tune-ups run $80 – $200 with a written report of everything found, and our technicians are not paid on what they sell you. AC Maintenance in Fairfax
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Fairfax
We service all major residential HVAC brands including Trane, Lennox, Goodman, and Rheem. Our trucks carry common capacitors, contactors, and igniters for these brands, so most Fairfax repairs don’t wait on parts. See our brands for the full list.
Pricing for HVAC Company in Fairfax, CA
| Service | Typical range in Fairfax |
|---|---|
| AC repair (minor) | $150 – $350 |
| AC repair (major) | $350 – $650 |
| Furnace repair (minor) | $150 – $350 |
| Furnace repair (major) | $350 – $700 |
| AC installation | $3,500 – $7,500 |
| AC tune-up / maintenance | $80 – $200 |
What pushes Fairfax prices toward the higher end: electrical coordination for outdated wiring, Marin County permit fees, and the extra labor of retrofitting mini-splits into tight, unforgiving spaces. What keeps them predictable: we give you a written, fixed price before any work starts, every single time. No exceptions.
Neighborhoods We Serve in Fairfax
We dispatch from our San Francisco Bay Area office and typically reach Fairfax homes within 45 – 60 minutes during business hours, often same-day for urgent calls.
- Downtown Fairfax
- Peri Park area
- Bolinas Ridge
- Deer Park
- Manor Road corridor
Service Area – Cities Near Fairfax
Our crews cover central and southern Marin County regularly. We also serve San Anselmo, CA, Kentfield, CA, San Rafael, CA, and Larkspur, CA from the same dispatch.
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 HVAC Company in Fairfax, CA
Most urgent HVAC calls in Fairfax receive same-day service when you call (984) 538-9003. Our live dispatchers answer 24 hours a day, and crews typically arrive within 45 – 60 minutes during business hours. Nights and weekends are staffed; you’ll never reach a voicemail tree.
Yes. Marin County requires permits for most equipment replacements and new installations, with inspections for gas line connections and electrical work. We handle permit paperwork as part of every job and schedule inspections so you don’t have to coordinate with the county yourself.
Absolutely, and we do it regularly in Fairfax. Knob-and-tube or aluminum wiring requires an electrician partner, which we coordinate. No ductwork means we design a ductless mini-split system sized to your home’s layout and your family’s needs. Call (984) 538-9003 for a free estimate.
What happens when you call
- 1A real person answersNo phone trees - talk to a local hvac pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Fairfax Customers Say
"Drain line was clogging and causing a leak by the air handler. They cleared it and installed a float switch so it can't flood again."
- Nora T."AC stopped cooling on a hot afternoon. Tech arrived with a badge, checked the capacitor, found it bad, and replaced it on the spot. House cooled down within the hour."
- Steve P."Furnace ignitor went out on a cold morning. Part was on the truck, installed in thirty minutes."
- Alvin K.