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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AfterHVAC Company in Los Altos, CA
Most HVAC calls in Los Altos aren’t simple fixes. They’re retrofits of 1960s ranch homes built with forced-air heating only, no cooling path, and duct systems too small for the South Bay heat events that now push temperatures into the low 90s°F. We’re Brandt HVAC, and we specialize in the full-scope work Los Altos homes actually need, from duct redesigns to smart-home integration, with a written price before any work starts and a technician sent to your door by name and photo. Call (984) 538-9003 when you’re ready to talk through what’s really going on with your system.
Why Los Altos Homes Are Different
Los Altos sits far enough inland from the Bay to catch real heat, yet its housing stock was engineered for a cooler era. The dominant post-war ranch homes, built 1950 through 1975, were designed around gravity-return duct trunks sized only for furnace heating. When an owner wants AC added, that single-zone return capacity is almost always grossly undersized for a cooling load. What sounds like a condenser-and-coil add-on routinely becomes a full duct redesign.
Meanwhile, median home values well past $3 million mean nearly every project runs alongside high-end renovations or teardown-rebuilds. We’re working on 60-year-old leaking galvanized duct in one home and specifying variable-speed zoned systems for a custom build next door. Hyper-affluent, tech-industry homeowners expect whole-home smart integration, Nest, Ecobee, HomeKit, as baseline, not an upgrade. The work here demands both old-system archaeology and new-system precision.
Original builders also skipped attic insulation by modern standards. In a warming inland South Bay climate, that mismatch between aging construction and current conditions drives most of our calls.
Our Main Los Altos Services
Los Altos homeowners call us most often for these three services, each with its own dedicated page and local pricing.
AC Repair in Los Altos
AC repair in Los Altos usually involves systems that were retrofitted into heating-only ductwork, not designed for cooling from the start. We see short-cycling from undersized returns, refrigerant leaks in linesets run through old crawlspaces, and compressors overworked by duct systems that can’t move enough air. Every repair starts with a written diagnosis and price, and our technician arrives with a photo ID badge you’ll recognize from the introduction we sent by text or email. AC Repair in Los Altos
Furnace Repair in Los Altos
Furnace repair here means working on original 1960s – 70s units still running in ranch homes off Foothill Expressway, plus modern high-efficiency replacements in renovated properties. We handle failed igniters, cracked heat exchangers, and blower motors strained by decades of dust in original ductwork. Because many Los Altos furnaces are tucked into tight crawlspaces or small utility closets, we stock compact replacement parts and verify clearances before we quote. Furnace Repair in Los Altos
AC Maintenance in Los Altos
AC maintenance in Los Altos is preventive care for systems working harder than their original duct design intended. Our tune-ups include airflow testing at each register, refrigerant level verification, and inspection of lineset insulation degrading in attics that hit 140°F on summer afternoons. We document what we find in a written report, and our technicians are not paid on what they sell, so the recommendation you get is the one your system actually needs. AC Maintenance in Los Altos
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 Los Altos
We repair and maintain all major residential HVAC brands, including Goodman, Rheem, and Daikin, plus Carrier, Trane, Lennox, York, Bryant, and American Standard. Our San Francisco Bay Area office stocks common control boards, capacitors, and blower motors locally, so most Los Altos repairs don’t wait on parts shipping. our brands
Pricing for HVAC Company in Los Altos, CA
| Service | Typical range in Los Altos |
|---|---|
| AC Repair – minor (capacitor, contactor, fuse) | $150 – $350 |
| AC Repair – moderate (refrigerant leak repair, fan motor) | $350 – $500 |
| AC Repair – major (compressor, full electrical) | $500 – $650 |
| Furnace Repair – minor (igniter, flame sensor, thermostat) | $150 – $300 |
| Furnace Repair – moderate (blower motor, gas valve) | $300 – $500 |
| Furnace Repair – major (heat exchanger, control board) | $500 – $700 |
| AC Installation (cooling retrofit with duct modification) | $3,500 – $7,500 |
| Annual AC Tune-Up / Maintenance | $80 – $200 |
Prices in Los Altos trend toward the higher end of these ranges when jobs require duct redesign, smart-home integration, or access through finished spaces in renovated homes. You’ll always see a written, itemized price before we start any work, and that price doesn’t change unless you ask us to do something different.
Neighborhoods We Serve in Los Altos
We dispatch crews throughout Los Altos from our San Francisco Bay Area office, with same-day availability for most repair calls anywhere in the city. These are the neighborhoods we most often work in:
- South Los Altos (near Grant Park and the county border)
- Loyola Corners (historic village center, mix of original and rebuilt homes)
- North Los Altos (established ranch homes off El Camino Real)
- Country Club area (larger lots, frequent renovation and teardown projects)
- Los Altos Hills border zone (steep lots, custom systems, extended duct runs)
Service Area – Cities Near Los Altos
Our crews work throughout the southern Peninsula and South Bay. If you’re just outside Los Altos city limits, we also serve Mountain View, CA, Stanford, CA, Palo Alto, CA, and Portola Valley, CA. Scheduling and dispatch are coordinated from our San Francisco Bay Area office.
Serving Los Altos, CA - Our Local Coverage Area
We’re based in the Los Altos 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 Los Altos
Most Los Altos repair calls are scheduled same-day or next-day, and our phones are answered by a live person 24 hours a day. For AC failures during heat events or furnace failures in cold snaps, we prioritize by health and safety risk. Call (984) 538-9003 to check current availability.
Yes. The City of Los Altos requires permits for furnace replacement, AC installation, and duct modifications. We handle permit paperwork as part of any installation quote, and we schedule inspections so you don’t coordinate with the city yourself.
We can. Several Los Altos neighborhoods and condo associations require proof of insurance, background checks, or specific scheduling windows. Our Threshold Verified standard, background-checked and identity-verified technicians with photo ID badges, satisfies most HOA security requirements without extra paperwork on your end.
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 Los Altos Customers Say
"Annual tune-up on the furnace. He cleaned the burners, tested the heat exchanger, and told me what was fine and what to watch. No scare tactics."
- Lorraine E."Maintenance plan is simple and the tech showed me the readings, not just said it was fine."
- Maribel C."Condenser fan motor replaced the same day. Clean, quick, and the quote didn't change."
- Lamar R.