Now booking fall heating tune-ups & commercial refrigeration checks · 24/7 no-heat repairs
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1-800-266-5243

Residential & commercial, across the Bay Area

Bay Area HVAC & Refrigeration Services 24/7 Repair & Installation

Licensed and insured HVAC and refrigeration professionals serving San Jose, Santa Clara and the Bay Area. Family-owned and operating since 1966.

Call 1-800-266-5243Schedule service
  • Homes and businesses
  • Heating, cooling and refrigeration
  • 1-year parts and labor warranty
HVAC technician servicing a rooftop unit under a blue sky Cool Aid technician standing next to a company service van
Family-ownedSince 1966
Answered 24/7Emergency line
Homeowner shaking hands with an HVAC technician beside an outdoor unit
For your home

Residential HVAC

AC and heating repair, tune-ups and new systems that keep your home comfortable all year.

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Commercial rooftop HVAC unit serviced by Cool Aid
For your business

Commercial HVAC

Heating and cooling for offices, retail and restaurants, serviced with minimal downtime.

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Glass door freezers stocked with product in a store
For your kitchen and store

Commercial Refrigeration

Walk-in coolers, reach-ins, ice machines and beer caves serviced to protect your inventory.

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  • Since 1966Family-owned
  • Licensed & insuredHVAC and refrigeration
  • EPA certifiedRefrigerant handling
  • 1-year warrantyParts and labor
  • Answered 24/7Emergency line
Heating season 2026–27

Get your heat checked before you need it

Bay Area winters are mild, which is why heating faults tend to show up on the first cold night. We tune up furnaces and heat pumps, answer no-heat calls 24/7, and keep commercial kitchens and walk-ins running.

Fall tune-upsFurnace and heat pump checks before the cold sets inNo-heat repair, 24/7Emergency HVAC service day or night across the Bay AreaCommercial refrigerationWalk-ins, ice machines and display cases for restaurants and grocery stores
See fall & winter services
What we do

Expert HVAC and refrigeration services

One family-owned company for your home comfort and your commercial equipment.

Residential HVAC Services

Keep your home comfortable year-round with expert AC and heating repair, tune-ups, and installations.

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Commercial HVAC Services

Dependable heating and cooling for offices, retail, and restaurants with minimal downtime.

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Commercial Refrigeration Services

Walk-in coolers, reach-in units, and ice machines serviced to protect your inventory.

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Emergency HVAC Services

24/7 emergency service across the Bay Area when your system fails, day or night.

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Commercial HVAC Repair

Careful diagnostics and lasting repairs that get your commercial system back online.

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Commercial HVAC Maintenance

Preventative maintenance plans that extend equipment life and lower your energy bills.

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AC Maintenance Plans

Scheduled AC tune-ups that keep you efficient and catch small issues before they grow.

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Emergency Repair & Service

Urgent HVAC and refrigeration help when you need it most, around the clock.

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We’re always here to help.Heating, cooling or refrigeration down? Call and talk to us, day or night.

Call 1-800-266-5243
Cool Aid technician standing next to a company service van
Our own technicians, in our own trucksFamily-owned since 1966
Our story

A family tradition since 1966

Our journey began with Glenn McKinny, a proud U.S. Navy Chief Engineer whose career in air conditioning, heating and refrigeration started after his honorable discharge in 1966. What began as a personal mission grew into a family business.

From those early days to today, we’ve remained committed to delivering quality service and building lasting relationships with our customers, upholding the values Glenn instilled from the very beginning: service, reliability, and a passion for doing the job right.

Learn more about us
Commercial refrigeration

Refrigeration for the businesses that depend on it

Walk-ins, reach-ins, ice machines, display cases and beer caves, repaired and maintained by C-38 licensed technicians.

Two Cool Aid technicians working on refrigeration lines in a commercial kitchenRestaurantsCool Aid technician repairing a reach-in freezerHotelsGlass doors of a walk-in beer cooler in a storeLiquor StoresOpen-air refrigerated merchandisers stocked with drinksConvenience StoresCool Aid technician repairing refrigeration equipment behind a counterIce Machines
See refrigeration by industry
Our work

On the job around the Bay Area

Photos from our own HVAC and refrigeration service calls and installations.

Long line of glass door coolers installed in a new store
Cool Aid technician repairing a glass door cooler in a store
Cool Aid technician installing a rooftop condensing unit
Cool Aid technician working on a refrigeration compressor unit
Evaporator coil mounted inside a walk-in cooler
Crane lifting refrigeration equipment onto a roof
Cool Aid A/C and Refrigeration service van
See recent HVAC and refrigeration projects
Reviews

What customers say

Reviews left for Cool Aid on Google.

James and Cool Aid saved our family! It was 106 degrees and our A/C went out with small children in the home. He found the problem and fixed it quickly! Thank you!
Sara JantzGoogle review
James came out quickly to service the air conditioner and did a great job. He was very professional and advised us that we needed a new air conditioner.
Regina ChambersGoogle review
If you want it done the right way Cool Aid will get it done for you. Great work.
Christopher WillisGoogle review
Fast, friendly, and professional. Great job.
Mike TangneyGoogle review
See all reviews Find us on Google · Yelp · Facebook
Service area

Proudly serving the San Francisco Bay Area

Based in Santa Clara. Choose your city for local HVAC and refrigeration service.

Blogs & insights

Tips from our technicians

7 Benefits of Installing a Heat Pump in San Jose
From the blog

7 Benefits of Installing a Heat Pump in San Jose

10 Ways to Improve Indoor Air Quality
From the blog

10 Ways to Improve Indoor Air Quality

5 HVAC Maintenance Tasks You Can DIY (And 5 You Shouldn’t)
From the blog

5 HVAC Maintenance Tasks You Can DIY (And 5 You Shouldn’t)

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