Los Altos · Licensed HVAC Contractor

Licensed HVAC Contractor in Los Altos, CA

Hot summer afternoons in Los Altos are when aging air conditioners fail, and replacement is a permitted, sized job rather than a quick swap. Los Altos homeowners who need a licensed HVAC contractor can book on NorTech only an independent contractor whose California C-20 license has been checked against the state record, never someone who is still working toward one.

California C-20 contractors only

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Licensed HVAC contractor work in Los Altos

Los Altos: Orchard-town charm and quiet affluence in the heart of Silicon Valley. Typical homes: Single-family homes, townhomes, condominiums, multi-unit properties, high-end residential, and custom properties. What drives local demand: Pre-listing prep, mid-century maintenance, and high-end finish work. When a project crosses into permitted, structural or code-regulated work, it moves from a smaller handyman job to a licensed HVAC contractor.

NorTech connects Los Altos homeowners, including those in Old Los Altos, Downtown Los Altos Village, Country Club, Los Altos Highlands, North Los Altos, and South Los Altos, with licensed HVAC contractors, and the areas around Downtown Los Altos village, Rancho Shopping Center, and Shoup Park. Enter your ZIP to see which licensed work is available at your address.

Work that needs a licensed HVAC contractor in Los Altos

Furnace and air-conditioner replacement

Whole-system HVAC replacement

Mini-split heat pump installation

Ductwork installation and repair

Equipment changeouts that need a permit

The license, and how we check it

California class C-20: Warm-Air Heating, Ventilating and Air-Conditioning

California HVAC contractors hold a C-20 license. The state licensing board website lists every license by number, and we check status and expiry before a contractor can take licensed HVAC work.

Look up a license on the state board site · How licensing works on NorTech

Smaller jobs and bigger jobs

Small jobs under the California handyman exemption (under $1,000, no permit) can include basics like a thermostat swap. System replacement, ductwork and refrigerant work go to a licensed HVAC contractor.

Licensed contractor only

Licensed HVAC contractor services in Los Altos

HVAC System Replacement

Full furnace/AC system replacement, not a repair — sized, permitted, and installed by a verified C-20 HVAC contractor.

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Mini-Split Installation & Repair

A new ductless mini-split system installed, or an existing one diagnosed and repaired — always a verified C-20, EPA-608-certified HVAC contractor, since this is a sealed refrigerant system.

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Ductwork Installation & Repair

New ductwork or repair of existing ducts — always a verified C-20 HVAC contractor.

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Frequently asked

Questions from Los Altos homeowners

Permit rules differ by city and by project. For licensed HVAC work in Los Altos, permit and inspection handling is part of the scope your contractor confirms with you before you book.

Pros on NorTech cover Los Altos addresses including Old Los Altos, Downtown Los Altos Village, Country Club, Los Altos Highlands, North Los Altos, and South Los Altos. Enter your ZIP on the booking page to confirm your address is covered.

Yes. System replacement is permitted work and is booked only with a verified C-20 contractor on NorTech.

C-20 is the California contractor license class covering warm-air heating, ventilating and air conditioning.

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Is a licensed HVAC contractor available in Los Altos?

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About licensed HVAC contractors · All services in Los Altos · How licensing works

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