HVAC Repair in Los Altos, CA94023
Arctic Air Heating & Cooling dispatches licensed, insured heating and air conditioning technicians toLos Altos and the 94023 ZIP code 24 hours a day, 7 days a week. Target response time in this service zone: 60-90 minutes.
Inland valleys hit extreme heat while coastal zones stay mild, so system sizing matters more here than raw capacity. Across the 94023 area that translates into a steady stream of failed capacitors, clogged filters, dying blower motors and refrigerant leaks — most of which we can diagnose and repair in one visit.
Talk to a live dispatcher in Los Altos
Serving 94023 and Santa Clara County — no phone trees, no callback waiting.
- We test airflow and static pressure, not just refrigerant charge
- Combustion and carbon monoxide testing on every furnace call
- Digital condition report sent to you the same day
- Financing available on qualifying replacements
★★★★★5.0 average · 64 verified reviews
- Licensed & Insured Technicians
- Background-Checked Crews
- Upfront Flat-Rate Pricing
- Same-Day & Next-Day Service
- No Overtime Charges
- All Work Warrantied
The Los Altos94023 calls we answer most often
If your system is doing any of the following, it is worth a diagnostic before the fault gets more expensive.
Squealing or grinding from the blower assembly
Outdoor condenser humming but the fan not turning
Musty or burnt smell the first time the system runs
Skyrocketing utility bills with no change in usage
Thermostat reading several degrees off from reality
Furnace lights then shuts down after a few seconds
Heating and air conditioning service built around Los Altos
Serving Los Altos and the wider Santa Clara County area, our crews carry the common failure parts on the truck — capacitors, contactors, igniters, flame sensors, motors and filters — so the first visit is usually the last one.
In the 94023 area we see a lot of attic-mounted air handlers. Attic heat soak in summer and cold-soak in winter both shorten component life and make insulation checks part of a proper diagnosis.
If your system is over ten years old and you have had two repairs in the last two seasons, a replacement comparison is usually worth running even if the current unit still runs.
Typical Los Altos service pricing
| Service | Typical Range |
|---|---|
| Diagnostic / service call | $96 – $192 |
| Capacitor replacement | $230 – $538 |
| Contactor replacement | $243 – $576 |
| Refrigerant leak repair + recharge | $410 – $1,152 |
| Blower motor replacement | $576 – $1,216 |
| Compressor replacement | $1,792 – $3,712 |
| Hot surface igniter / flame sensor | $205 – $512 |
| Furnace control board | $486 – $1,088 |
| Condensate drain / float switch | $166 – $435 |
| Thermostat install (wired or smart) | $192 – $576 |
| Duct cleaning (whole home) | $486 – $1,152 |
| Full system replacement (installed) | $7,680 – $16,640 |
Market ranges reported for Los Altos, CA and the wider Pacific region. Your flat-rate quote is confirmed on site before any work begins.
Services available in 94023
Residential and light commercial, all major brands, all hours.
Air Conditioning Repair in Los Altos
Diagnosis and repair for central air conditioners, heat pumps in cooling mode, ductless mini-splits and packaged rooftop units.
Furnace Repair in Los Altos
Gas, propane, oil and electric furnace troubleshooting and repair.
HVAC Installation & Replacement in Los Altos
Full system replacement and new construction installs with a Manual J load calculation so the equipment is actually sized for your home.
Heat Pump Repair & Service in Los Altos
Heat pump diagnosis and repair for both heating and cooling operation, including cold-climate units, defrost board failures, reversing valve problems, auxiliary heat strip faults and refrigerant charge issues.
24/7 Emergency HVAC Repair in Los Altos
Around-the-clock response for no-heat in freezing weather, total AC failure during a heat wave, gas smells, carbon monoxide alarms, water flooding from the indoor unit and complete system shutdowns.
Air Duct Cleaning & Sealing in Los Altos
Whole-home duct cleaning and aeroseal-style duct sealing to recover lost airflow, reduce dust and lower the load on your equipment.
HVAC Maintenance & Tune-Up in Los Altos
Seasonal precision tune-ups that catch failing components before they strand you.
Commercial HVAC Service in Los Altos
Service for light commercial and commercial properties including rooftop packaged units, VRF and VRV systems, split systems, make-up air units and building automation controls.
What happens when you call
No forms, no waiting for a callback window. One phone call starts the whole process.
- Step 1: Call the dispatch lineYou reach a live dispatcher, not a recording. They confirm your address, the symptom you are seeing and how urgent it is.
- Step 2: Get matched to the nearest licensed techDispatch routes your job to the closest available licensed technician who already carries the common parts for your equipment.
- Step 3: On-site diagnosis with a flat quoteThe tech tests the system, shows you what failed and gives you a written flat-rate price before any work starts.
- Step 4: Approved repair, same visit when possibleMost repairs are finished on the first visit. If a part has to be ordered you get a firm return window, not a maybe.
Servicing Los Altos and Santa Clara County
Our 94023 coverage zone centres on Los Altos and extends to the surrounding communities listed below. Every technician dispatched into this area is licensed, insured and background-checked, and every job carries a workmanship warranty.
What Los Altos homeowners say
“Two other companies told me I needed a whole new system. These guys found a $210 capacitor. I will never call anyone else.”
— Marcus T., verified Los Altos customer
“AC died during a heat advisory. Dispatch was honest that it would be a few hours, then called me the moment a slot opened.”
— Angela W., verified Los Altos customer
Los Altos94023 HVAC questions, answered
Do you service commercial and light commercial properties?
Yes. Around Los Altos we handle rooftop packaged units, split systems, VRF/VRV installations and building automation faults for offices, retail, restaurants and multi-tenant buildings, including after-hours scheduling so you are not disrupting trade.
What causes water to leak from the indoor unit?
Almost always a blocked condensate drain line, a failed drain pan float switch, or a frozen coil melting faster than the pan can handle. In Los Altos we see algae and dust clogging drain lines constantly during May through October. It is a fast fix but ignoring it ends in ceiling damage.
Why is my system short cycling?
Short cycling in Los Altos most often comes from a restricted airflow path — a loaded filter, a closed register, an undersized return — or from an oversized unit. It can also be a failing flame sensor or a pressure switch fault. We measure static pressure and temperature rise before concluding anything, because guessing at this one is expensive.
How quickly can a technician get to Los Altos?
For the 94023 service area our target response time is 60-90 minutes from the moment dispatch confirms your address. Real-world timing depends on the day — the first sustained heat or cold snap of the season is always our busiest period — but we hold technicians locally specifically so that window is achievable rather than aspirational.
What brands do you service in Los Altos?
All of them. Our 94023 technicians are trained on Carrier, Trane, Amana, American Standard and essentially every other residential brand sold in California, including discontinued lines. We keep a broad parts catalogue on the trucks for exactly that reason.
Is my system low on refrigerant, or is it leaking?
Refrigerant does not get "used up" the way fuel does. If your charge is low, there is a leak somewhere — usually at a flare connection, a schrader core or the evaporator coil. We locate and repair the leak rather than simply topping up the charge, because a top-up alone will fail again.
HVAC service near Los Altos, CA
We also cover these California communities with the same 24/7 dispatch line.
Need HVAC help in Los Altos 94023?
If you are not sure whether it is worth repairing, call (866) 548-3173 anyway. A flat-rate diagnostic tells you the real number, and you decide from there.
(866) 548-3173Answered 24 hours a day, 365 days a year