Since A-1 Guaranteed began as a business, we have grown to be one of the most trusted HVAC service businesses in the areas of Solano, Napa, and Contra Costa Counties. We have gained experience and knowledge from putting our name on thousands of installations and repairs, and our customers gain from our working knowledge of the latest technology in heating and air conditioning.Our reason for existing is the basis of our company philosophy: We work to provide service to our customers. Looking after the best interests of our customers in a professional and fair manner is what sets us apart from other businesses in the industry. We pledge to always be courteous, fair, thorough, and professional in every service we provide.

It is this pledge that has enabled us to grow as a family and expand as a company over the years. We are licensed by the state of California (License No. 719381) and hold that license as a true privilege and a testament to our reputation as a premier provider of indoor comfort.

Meet our staff

The A_1 Guaranteed Team

The A_1 Guaranteed Team

Air Flow

Community Wall

Hands On Training

Solar

Installers

Factory Training

Lineset Training

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Awards & Certificates

  • Better Business Bureau Honor Roll Member for 21 Years Running
  • BPI Certified
  • Energy Upgrade Participating Contractor
  • Trane Award for Superior Installation and Service
  • Voted Best Heating/Cooling Company for 12 years by Readers of The Vallejo Times Herald
  • Vallejo Schools V.I.P. Award for Partners in Education
  • Vallejo Little League for Support and Generosity
  • Bay Area Certified Green Business
  • Employee Support of the Guard & Reserve by Office of the Secretary of Defense
  • Energy Efficiency Award by Energy Upgrade California

Memberships

  • Chambers of Commerce: State of California, City of Vallejo, and City of American Canyon
  • League of California Homeowners
  • Electric & Gas Industries Association
  • Air Conditioning Contractors of America
  • Napa-Solano Builders Exchange
  • Better Business Bureau
  • Safety Services Company
  • NATE Certified
  • EGIA Approved Contractor
  • Diamond Certified
  • A-1 Guaranteed Heating & Air Conditioning
    1768 Broadway St. Vallejo, CA 94589