HVAC Repair in Los Altos, CA94024
Arctic Air Heating & Cooling dispatches licensed, insured heating and air conditioning technicians toLos Altos and the 94024 ZIP code 24 hours a day, 7 days a week. Target response time in this service zone: 60-90 minutes.
Homeowners across Los Altos call us when the system simply will not keep up. Inland valleys hit extreme heat while coastal zones stay mild, so system sizing matters more here than raw capacity. That is why we staff a live dispatch line around the clock instead of routing you to a queue.
Talk to a live dispatcher in Los Altos
Serving 94024 and Santa Clara County — no phone trees, no callback waiting.
- No overtime charges for evenings, weekends or holidays
- Manufacturer-trained on Goodman, Rheem and Heil equipment
- Free second opinion on any replacement quote over $3,000
- Upfront honesty: if it is a $40 capacitor, we say so
★★★★★5.0 average · 357 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 Altos94024 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.
Short cycling — on and off every few minutes
One or two rooms that never reach the set temperature
Loud banging on start-up (compressor slugging)
Yellow or orange burner flame instead of steady blue
Refrigerant leak at a flare or coil connection
Frozen evaporator coil or ice on the refrigerant lines
Heating and air conditioning service built around Los Altos
Inland valleys hit extreme heat while coastal zones stay mild, so system sizing matters more here than raw capacity. Across the 94024 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.
Local homeowners often run their system harder than the design intended, especially during May through October. That accelerates wear on contactors, capacitors and blower bearings.
We recommend two maintenance visits a year in California: one before May through October and one before November through February. It is the single highest-return thing a homeowner can do for equipment life.
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 94024
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 94024 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
“New ductless install, clean work, and they actually did a load calculation instead of just matching the old unit size.”
— Kevin M., 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 Altos94024 HVAC questions, answered
Do you charge extra for nights, weekends or holidays?
No. Our pricing in California is the same at 2am on a holiday as it is at 2pm on a Tuesday. Emergency calls are dispatched the same way as scheduled calls and carry no overtime premium.
What does a new system cost in Los Altos?
A complete residential replacement in the 94024 area generally lands between $6,000 and $13,000 installed, depending on capacity, efficiency rating and how much ductwork has to be modified. We always perform a Manual J load calculation first, because an oversized unit costs more to buy and runs worse than a correctly sized one.
How much does an HVAC service call cost in 94024?
A diagnostic visit in Los Altos typically runs $75 to $150, and that fee is usually applied toward the repair if you approve the work. Repair prices are quoted as a flat rate before we start, so the number you approve is the number you pay regardless of how long the job takes.
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.
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.
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 94024?
Do not wait until the house is unbearable. Call (866) 548-3173, get a real diagnosis, and get a written price before any work starts.
(866) 548-3173Answered 24 hours a day, 365 days a year