The Leader in Contra Costa County Heating and Air Conditioning

More residents of Contra Costa County trust our team for home comfort services more than any other HVAC company in the area. A-1 Guaranteed Heating & Air, Inc. is proud to be the leader in heating and cooling repair and installation services, and we offer much more, too.

We invite you to see for yourself all that we offer to keep you and yours comfortable, healthy, and safe in your home or business. We’re a BPI Goldstar Certified company and honored by several years of Readers’ Choice Awards by local newspapers.

With impeccable 5-star reviews on Google and Yelp, along with an “A” rating while we were with Angie’s List, we continue to set the bar for all others to aspire to.

At A-1 Guaranteed, we will take care of all your heating and cooling needs, but that’s not all. We offer a complete suite of services that encompass many facets of home comfort, some of which include:

Heating and Air Conditioning

We service all major brands, models, and makes of heating and cooling units of various types! We’re equipped to handle residential and commercial needs of all sizes, ensuring optimal indoor climate control and comfort, no matter the season.

Air Duct Replacement

Unfortunately, air ducts don’t last forever; over time, the cleanliness, efficiency, and integrity of even the highest-grade ones deteriorate. We can replace and maintain your ductwork to ensure air always flows optimally throughout your home or business. Quality ducts deliver optimal HVAC efficiency, boosting comfort and saving you money.

Tankless Water Heaters

If you’ve had your old tank heater for a while and are interested in an endless supply of hot water on demand, a tankless heater might be just what you’re looking for. We can upgrade you to an energy-efficient, space-saving tankless water heater tailored to your property’s specific needs.

Insulation

Our premium insulation services can improve the energy efficiency of your home or business and ensure it always remains safe and comfortable. When indoor temperatures and humidity are controlled and supported by the proper insulation, your energy consumption will decrease, along with your energy bills.

Windows

The impact windows have on maintaining a building’s interior climate cannot be overstated! They are powerful players in the game of indoor temperature control and can make a big difference in aesthetics. Enhance the natural light filtering into your home with our window installation services.

Our team continually stands out from others in the area for HVAC services for so many reasons. Here are a few of them:

• Voted best heating/cooling company for 16 years
• Awarded Best of The Bay for 5 years by KRON 4 TV
• Recognized as an Energy Upgrade Participating Contractor
• Factory-trained installers and technicians for superior service
• Proud member of the Better Business Bureau Honor Roll for 24 Years
• A Diamond Certified Company committed to excellence
• North American Technician Excellence (NATE) certified professionals
• A Bay Area Certified Green Business dedicated to sustainable practices

Count on A-1 Guaranteed Heating & Air, Inc. for windows, HVAC, insulation, tankless water heaters, and more. Your satisfaction is always guaranteed, and we are fully licensed, bonded, and insured.

Reach out to us at 888.421.2473 today to schedule an appointment or to get a free estimate.