AC repair
Furnace & heating
Heat pumps
Ductless mini splits
Carrier
Trane
GoodmanSeasonal 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.
Get your free estimateHVAC Company in San Mateo, CA
Most San Mateo homes were built without air conditioning, and for good reason at the time: the coastal fog kept summers mild and the original owners figured a furnace was all they’d ever need. Seventy years later, those same ranchers and split-levels are still standing, but the heating systems and ductwork are tired, and the fog still rolls over the hills every evening. That’s where we come in. Brandt HVAC handles furnace repair, AC repair, and AC maintenance in San Mateo with written pricing before any work starts. Call (559) 245-8807 and a live person answers, day or night.
Why San Mateo Homes Are Different
San Mateo sits on the San Francisco Peninsula, and the work here has a rhythm all its own. Cool summers tempered by fog mean central AC is rare; mild, wet winters mean the furnace does most of the heavy lifting from November through March. The housing stock is dominated by single-family ranchers and split-levels from the post-war boom, many built on slab foundations with original galvanized piping and undersized ducting. That slab foundation matters more than most homeowners realize: when ductwork runs through concrete, retrofitting or replacing it is a structural job, not a simple swap. We’ve pulled apart more San Mateo furnaces in Baywood and Aragon than we can count, and the pattern holds: old floor furnaces, galvanized supply lines that have thinned from decades of condensation, and returns that were sized for a house half this tight.
The fog itself creates a service spike every summer. When the marine layer rolls in around dusk, it drops the outside temperature fast. Old floor furnaces in Baywood and Aragon will short-cycle or fail to ignite entirely as the cool, damp air hits their pilot assemblies. Homeowners call us at 8 or 9 p.m. because the furnace fired twice and then went dark. A live person picks up, and we route a technician who already knows the neighborhood’s housing stock. No voicemail, no callback queue.
Styles & brands we work with
Our Main San Mateo Services
San Mateo homeowners call us most about furnace failures in winter and AC trouble in the rare heat spells that sneak through in September and October. Each service has its own page with full pricing, local conditions, and what the repair or tune-up actually involves.
AC Repair in San Mateo
San Mateo homes that do have central AC tend to run it only a few weeks a year, which means systems sit idle for months and then get asked to work hard on a single hot afternoon. The result is a predictable pattern: failed capacitors, low refrigerant from slow leaks, and condensate lines that clogged while nobody was looking. Because most San Mateo AC systems are add-ons retrofitted into 1950s and 1960s ranchers, the condenser is often squeezed into a side yard with poor clearance, which shortens its life. Read the full breakdown on our AC Repair in San Mateo page, including what a typical repair costs here.
Furnace Repair in San Mateo
Furnace repair is the heartbeat of San Mateo HVAC work. The city’s mild, wet winters push furnaces into steady service from fall through spring, and the older the home, the more likely the system is an original floor furnace or an early forced-air unit with original ducting. We see a lot of failed igniters, cracked heat exchangers in aging units, and gas valves that stick after a summer of disuse. The fog cycles in Baywood and Aragon make it worse, with cool damp air causing intermittent ignition failures. Details and pricing are on our Furnace Repair in San Mateo page.
AC Maintenance in San Mateo
For the many San Mateo homes with a lightly used central AC system, annual maintenance is less about heavy wear and more about catching what broke while the system sat idle: corroded contacts, low refrigerant, a condenser coil caked with dust from a dry summer, or a drain line that’s quietly growing something unpleasant. A tune-up also gives older systems a chance to be inspected before a heat wave, which matters when the whole Peninsula decides to turn on their AC on the same September afternoon. Our AC Maintenance in San Mateo page covers the flat price, what the tune-up includes, and what we check.
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 San Mateo
We service and repair all major residential HVAC brands, including Goodman, Rheem, York, and Daikin, among others. Our technicians stock common replacement parts for these systems on their trucks, which often gets a San Mateo furnace or AC unit running in a single visit. See our brands for the full list and what we carry for each manufacturer.
See the difference
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AfterPricing for HVAC Company in San Mateo, CA
These are the price ranges San Mateo homeowners should expect for common HVAC work. Every job starts with a written price before any work begins, so the number you see is the number you approve. No surprises after the fact.
| Service | Typical Range in San Mateo |
|---|---|
| AC Repair | $150 – $650 |
| Furnace Repair | $150 – $700 |
| AC Installation | $3,500 – $7,500 |
| Tune-Up | $80 – $200 |
What pushes a San Mateo job toward the higher end of these ranges is usually access and age. A furnace in a crawlspace under a 1950s rancher takes longer to reach than one in a garage-mounted closet. Galvanized piping that hasn’t been touched in fifty years often means the repair scope grows once we see what’s behind the wall. Whatever the final number, it’s written down and agreed to before we pick up a tool.
Neighborhoods We Serve in San Mateo
We work across the full city of San Mateo, from the hillside streets near Aragon High School down to the flats near Highway 101. Our technicians know the difference between a Baywood floor furnace and a Shoreview forced-air system before they arrive.
- Baywood
- Aragon
- Shoreview
- Hillsdale
- San Mateo Park
For most San Mateo neighborhoods, we can have a technician at your door within a few hours of your call. Same-day service is available for furnace and AC repairs when you call before mid-afternoon.
Service Area – Cities Near San Mateo
If you live in a neighboring Peninsula community, we’re likely already in your area. Our technicians regularly work in San Bruno, CA, South San Francisco, CA, and Pacifica, CA, and we cover Daly City, CA as well. Each city has its own housing patterns and weather quirks, and we handle all of them with the same written-price guarantee.
Serving San Mateo, CA - Our Local Coverage Area
We’re based in the San Mateo 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 San Mateo
In most cases, we can have a technician at your San Mateo home within a few hours of your call. Same-day service is available when you call before mid-afternoon, and our phones are answered by a live person 24 hours a day. Call (559) 245-8807 and we’ll give you a straight answer on timing.
Most repairs and tune-ups don’t require a permit, but some installations do, particularly when moving a unit or changing gas lines. We’ll tell you upfront if your job needs one and handle the paperwork as part of the written quote. No surprises.
Yes. Every Brandt HVAC technician is background-checked and identity-verified through the Threshold Verified standard. Before your appointment, we send you the technician’s name and photo. At your door, they’ll show a photo ID badge. If someone arrives who you were not told to expect, that visit is on us, and we’ll make it right.
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 San Mateo Customers Say
"Furnace short cycled all winter. He found a dirty flame sensor and cleaned it. Twenty minutes and a small bill."
- George Q."Replaced our 18-year-old AC with a new high efficiency one. Gave three options with real numbers and did not push the priciest."
- Elena V."Knowing a vetted tech was coming into my house made a difference. Name and photo texted ahead, shoe covers, polite, and thorough with explaining."
- Tina M.