Having a furnace that is working properly during cool fall and winter nights is essential. At A-1 Guaranteed we offer the very best in furnace maintenance and furnace repair, to ensure your family stays safe and comfortable.

We are committed to providing the best furnace repair available in the Bay Area. Offering unparalleled service, and the very best quality. If you are looking for ways to increase the energy efficiency of your home, or if your furnace isn’t working properly, A-1 Guaranteed will happily help guide you towards the most efficient way to repair your existing furnace. We are so confident that you will be satisfied with our work that we offer a money back guarantee, ensuring that you will always be satisfied.

Whether you’re in need of small repairs, or a new furnace, A-1 Guaranteed is your solution for furnace repair and replacement in the Bay Area.

When choosing A-1 Guaranteed you get:

    • Unrivaled customer service
    • Fast and efficient service
    • A Family owned business
    • A Diamond Certified, Better Business Bureau Honor Roll, and Best of The Bay honoree
    • A Best of Solano winner of 13 years
    • Experienced techs that are familiar with all makes and models of furnaces
    • A Bay Area Certified Green Business that is dedicated to energy efficiency in your home

Our customer satisfaction money back guarantee

With A-1 Guaranteed you no longer have to worry about furnace issues, as our team of highly qualified, professional technicians are happy to assist you with all of your furnace repair and replacement needs.

Call A-1 Guaranteed Heating & Air, Inc. today, to speak with one of our friendly customer care professionals.

contact us today!

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 14 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


  • 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