Top-rated independent heating and cooling across California's Central Valley and the Sierra foothills
HVAC Repair in Sunnyvale, CA — Local Techs, One Call
We handle heating and cooling work on Sunnyvale homes, from a condenser that won't start to a furnace that short cycles on a cold February morning, and the fastest way to get on the schedule is a phone call or the quote form. Most HVAC repair in Sunnyvale starts with the same handful of causes: a clogged filter, a failed capacitor, a drain line backing up, or a thermostat that lost its settings. Bay breezes keep summers milder than inland valleys, so systems here run long and quiet rather than hard, and worn parts hide for years before they quit.
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 Sunnyvale?
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 Sunnyvale, the local picture
We handle air conditioning repair, heating repair and system replacement for homes in Sunnyvale, and if your AC quit in the middle of a July afternoon, call us and we will get a technician out to look at it. Sunnyvale summers are dry and hot, with stretches in the 90s that push older condensers hard, and then winter nights drop into the 30s so the furnace has to actually work. A lot of what we see here is mid-century ranch homes and Eichler-style builds with radiant floors or ducts in tight crawl spaces, plus newer townhomes and condos running heat pumps. Each one fails differently. Before you call, you can check thermostat batteries and settings, look for a tripped breaker, change a dirty filter and clear leaves off the outdoor unit. If that does not bring it back, leave the refrigerant and gas side to us and let us know what you are seeing.
Most Sunnyvale homes went up during the postwar orchard-to-subdivision years, single story ranch houses on slab or shallow crawlspace with low attics and original ductwork. Many were built without cooling at all, so we often find later add-on systems, undersized returns and long duct runs in hot attics that need sealing and rebalancing.
Our vans run US-101, Highway 237, Central Expressway and El Camino Real most days.
Sunnyvale ZIPs & nearby cities we cover
From Sunnyvale we also cover Mountain View, Santa Clara, Cupertino, Los Altos, Milpitas and San Jose.
- 94088
- 94089
- 94301
- 94302
- 94303
- 94304
- 94305
- 94538
- 94539
- 94560
- 94022
- 94023
Neighbourhoods we work in around Sunnyvale
- Ponderosa Park
- Cherry Chase
- Birdland
- Sunnyvale West
- Raynor Park
- Lakewood Village
- Ortega Park
- Washington Park
- Fair Oaks
Nearby cities we also cover
- Santa Clara heating and cooling
- San Jose heating and cooling
- Fremont
- Hayward
- Oakland
- San Francisco
- Berkeley
- Concord
Sunnyvale permits, codes and utility programmes
Power here comes from Pacific Gas and Electric (PG&E).
TECH Clean California heat pump incentives and Energy Upgrade California are the programmes worth checking. Terms move, so confirm the current ones with the utility and we will point you at the paperwork.
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 Sunnyvale Building Safety 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 Sunnyvale
| 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 Sunnyvale — quick answers
How soon can you get to my Sunnyvale home?
Call us and we will give you a real window rather than a guess. During heat waves the schedule fills fast, so morning calls usually get same-day or next-day attention. If your system is down entirely and the house is climbing, tell us when you call and we will treat it that way.
Do you work outside Sunnyvale city limits?
Yes. We cover the surrounding Santa Clara Valley towns including Mountain View, Santa Clara, Cupertino, Los Altos and San Jose, and we work across California and Nevada. If you are not sure whether your street falls in our route, give us your address and we will tell you straight.
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 Sunnyvale
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
Rather not call? Get a free quote →