Top-rated independent heating and cooling across California's Central Valley and the Sierra foothills
HVAC Repair in Los Altos, CA — Local Techs, One Call
We handle heating and cooling work for Los Altos homes, from a condenser that hums but never cools to a heater that quits on a 38-degree morning. If your system is down right now, call us or send the quote form and tell us what the thermostat reads against what the house feels like. Most HVAC repair in Los Altos comes down to a few honest causes: a failed capacitor, a clogged filter starving airflow, a drain line backing up, or a control board that stopped talking to the outdoor unit. Peninsula houses run mild summers and damp winters, so equipment often hides problems for years before it fails.
Call (888) 381-2953- A real person answers
- Open 7 days
- Written quote before work starts
Taking calls until 5:00 PM PT
What is your system doing in Los Altos?
Find your service below, or skip it and describe the problem by phone.
One heating and air conditioning company for the whole system, from air conditioner repair to furnace replacement and seasonal maintenance.
AC Repair
Air conditioners blowing warm, short-cycling or refusing to start
Furnace Repair
Furnaces with no heat, short cycling or a locked-out control board
Heat Pump Repair
Heat pumps that will not heat, stick in defrost or run nonstop
AC Installation
New central air, replacements and ductless installations
Furnace Installation
New gas and electric furnaces, replacements and upgrades
Ductwork Repair
Leaking ducts, weak airflow and rooms that never get comfortable
HVAC Maintenance
Seasonal tune-ups for cooling and heating systems
Duct Cleaning
Air duct, vent and register cleaning
Thermostat Installation
Smart thermostats, replacements and zoning controls
Mini-Split Repair
Ductless mini-splits and multi-zone systems
Indoor Air Quality
Air purifiers, humidifiers, dehumidifiers and ventilation
HVAC repair in Los Altos, the local picture
We handle air conditioning repair, heating repair and full system replacement for homes in Los Altos, and the fastest way to get on the schedule is to call us with your thermostat reading and what the system is doing. A lot of Los Altos houses are 1950s and 1960s ranches and Eichler-style homes that were built for mild Peninsula weather, so cooling came later as a retrofit. That means undersized returns, ducts running through hot crawlspaces and attics, and condensers wedged into tight side yards where fence boards block airflow. Summer afternoons here are warm rather than brutal, but a September heat run will find every weak capacitor and low charge in town. Winter nights drop into the thirties, so a furnace or heat pump that short cycles gets noticed quickly. Before you call, check the thermostat batteries, look for a tripped breaker, swap a loaded filter and clear leaves from around the outdoor unit. We take it from there.
Most homes here went up in the postwar decades, single-story ranch houses on wide lots with stucco or wood siding, low-slope roofs and modest attic space. Many still run the original ducting in those attics, so airflow losses and undersized returns are common, and split systems are the usual fit rather than package units.
Our vans run I-280, Highway 85, El Camino Real and Foothill Expressway most days.
Los Altos ZIPs & nearby cities we cover
From Los Altos we also cover Los Altos Hills, Mountain View, Palo Alto, Sunnyvale, Cupertino, Santa Clara and Menlo Park.
Los Altos areas we cover
- Downtown Los Altos
- North Los Altos
- South Los Altos
- Country Club
- Highlands
- Loyola Corners
- Woodland Acres
- Springer
Nearby cities we also cover
Permits, codes and rebates in Los Altos
Here in Los Altos, Pacific Gas and Electric Company (PG&E) supplies electricity and gas.
Before you buy, look at TECH Clean California heat pump incentives and Energy Upgrade California. We will not promise something that closed last quarter, but we will tell you what is running when we quote.
Equipment changeouts are governed by California Title 24, Part 6 and normally call for a permit, with HERS verification and CF2R/CF3R registration on most changeouts. City of Los Altos Building Division handles them.
The federal 25C Energy Efficient Home Improvement Credit applies to qualifying equipment, and the efficiency tier it requires is worth checking before you choose a system.
How we compare to other HVAC companies in Los Altos
| Central Valley Air | Big-box repair chains | Handyman listings | |
|---|---|---|---|
| Written quote before any work | ✓ | ✕ | ✕ |
| Live answer seven days a week | ✓ | ✕ | ✓ |
| Every major brand, gas or electric | ✓ | ✓ | ✕ |
| Independent, no manufacturer quotas | ✓ | ✕ | ✓ |
| Crews familiar with homes like yours | ✓ | ✕ | ✓ |
The same on every visit
The quote comes first, in writing
Covering 123 cities across California, Nevada.Phones answered by people
Open 7 days, 8:00 AM to 5:00 PM PT.Independent of every manufacturer
Carrier, Trane, Lennox, Goodman and more. We are not an authorized dealer for any of them.HVAC repair in Los Altos — quick answers
How soon can you get to a Los Altos home for AC repair?
Call us and we will give you the next available window rather than a vague promise. Most Los Altos calls land same day or next day, though the first real heat stretch of the summer fills the book fast, so earlier in the day is better. Tell us the thermostat setting, the indoor temperature and whether the outdoor unit is running, and we will bring the parts that match the symptom.
Do you service homes near Los Altos too?
Yes. We work throughout the mid-Peninsula and South Bay, including Los Altos Hills, Mountain View, Palo Alto, Sunnyvale, Cupertino, Santa Clara and Menlo Park. If you are not sure whether your street falls in our route, give us the address and we will tell you straight away instead of leaving you waiting on a callback.
What does a repair visit cost?
Everything gets quoted in writing first, the visit, the parts, the labor, and work starts only when you approve.
Which brands do you service?
As an independent company we service every major brand, from Carrier and Trane to Lennox, Goodman and Rheem, gas and electric alike.
How it works
- Step 1
Tell us the symptom
Call or fill in the quote form. We ask what changed, when it started, and what the thermostat reads. That tells us whether to bring parts for a cooling fault or a heating fault.
- Step 2
We diagnose on site
A technician checks the thermostat, the electrical side, airflow through the filter and coil, refrigerant pressures, and the outdoor unit. You get told what failed and why, in plain words, before anything is replaced.
- Step 3
Repair and verify
We make the repair, then run the system and measure the results at the vents. If a part needs ordering, we say so and give you a realistic window instead of a vague promise.
- A real person answers
- Open 7 days
- Written quote before work starts
Why homeowners call us
- Built for real valley heatWe work in areas where afternoons sit above 110 degrees and systems run for months without a break. That shapes how we size repairs, check capacitors and contactors, and judge whether a compressor is genuinely done.
- Attic and package unitsPlenty of homes across the region run attic air handlers or rooftop package units instead of a garage furnace and a side-yard condenser. We are used to the access, the duct runs, and the drain issues those setups bring.
- Dust and debris we expectAg dust, cottonwood fluff and grass clippings pack condenser coils and starve a system of airflow. We clean what we find and show you the difference, rather than adding refrigerant to a unit that just could not breathe.
- Heating too, not only ACFurnace repair, heat pump faults and no-heat calls get the same attention as summer work. Ignition problems, cracked or failing components and short cycling all get diagnosed before we recommend anything larger.
- All major brands, gas & electricFrom Carrier and Trane to Lennox, Goodman, Rheem and Bryant, serviced independently.
- Straight answersWhen a replacement beats a repair, we tell you, sometimes before we roll a truck.
What we cover in Los Altos
A failing system does not get cheaper by waiting
A part on its way out usually takes something more expensive with it. Getting started takes about a minute.
- A real person answers
- Open 7 days
- Written quotes
- All major brands
- Gas & electric
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