Call 24/7 for emergency service 877.894.2577

Fairfield - HVAC Technician

Your local One Hour Heating & Air Conditioning has been serving the Sonoma, Napa, Marin & Solano county area since 1991. We promise prompt and professional service to all of our customers. "Always on time, or you don’t pay a dime."™ We look forward to solving all your heating and air conditioning repair, installation and service needs. Call us now to schedule an appointment.
To visit our local Heating & Cooling Website Click Here.
2490 Arnold Industrial Way Suite M Concord, California 94520 License Number: CA Lic.# 740999
Available 24/7

    With ironclad guarantees, professional and highly trained employees, 19 years of proven customer satisfaction and top-of-the-line, equipment that is well above the competitors with respect to guarantees, warrantees and efficiency, what more could you be looking for? Although you could get a system put in cheaper, we are certain you will not find a better value than you will find with One Hour. We never cut corners and will guarantee, in writing, our unmatchable guarantees. If you can find a company that will offer you more than we have, for less, we will pay you $5,000!
  • Awards and Affiliations

    • 2008 One Hour Franchise of The Year

    • Diamond Certified, Highest in Customer Satisfaction for five consecutive years

    • Honor Roll Status with the BBB


Paul Bigham

Paul Bigham - Owner

Paul Bigham, owner of One Hour Heating and Air Conditioning®, has worked in the trade since 1984, and started his own company in 1991. Born and raised right here in the Bay Area, Paul's company achieved Franchise of the Year in 2008, the BBB Honor Roll and Diamond Certified for the past 5 years. The company has grown from one small location to two locations that serve Sonoma, Marin, Napa and Solano counties. We are the largest HVAC residential service, repair and replacement company in the area. "The only thing I can take credit for is choosing the right people to work with", Paul said. "Every single person in our company is focused on customer satisfaction, and they deliver!"

"The customer is the main focus of our company. We're constantly looking for ways to improve our service. The only way to keep people happy is to understand exactly what they expect. We consider our customers to be our partners, and we make it a point to keep in touch and listen to what they have to say. Every comment and suggestion, no matter how small, helps to make us better."


    Central Heating & Air Conditioning Maintenance, Repair and Replacement
    Duct Cleaning, Repair, Replacement and Testing
    Whole House Air Filtration Systems for Superior Indoor Air Quality

    Our installation and repair services include:

    Obtaining Permits for Residences and Businesses
    Installation of All Major Brands
    Design Support Based on Your Individual Needs
    Custom Ductwork
    Oil to Gas Conversions
    Post-Installation Inspections
    Free Estimates


    • Air Conditioners
    • Air Handlers
    • Ductwork
    • Furnaces
    • Heat Pumps
    • Indoor Air Quality
    • Maintenance Agreements
    • Thermostats
    • AC Units (Central, Split, Window, Wall)
    • Duct Cleaning
    • Heating Systems (Gas, Electric, Solar, Forced Air, Hydronic)

    • American Canyon
    • Benicia
    • Calistoga
    • Dixon
    • Fairfield
    • Kentfield
    • Mill Valley
    • Napa
    • Novato
    • Rio Vista
    • Rohnert Park
    • San Anselmo
    • San Rafael
    • St. Helena
    • Suisun
    • Vacaville
    • Vallejo
    • Yountville

    $25 off any repair

    Valid at participating locations. Limit one per coupon per household. Coupon must be presented at time of purchase. Cannot be combined with any other offers or discounts. Some restrictions, taxes and fees may apply.
    Expires: 12/16/16
  • Maintenance Program

    The One Hour Heating & Air Conditioning® maintenance agreement, Comfort Club™, provides you with regular system checks. 

    A Comfort Club™ agreement will keep your system running at its peak.



    • 2008 One Hour Franchise of The Year

      Bigham's One Heating & Conditioning was chosen Franchise of The Year for 2008 out of 237 One Hour franchises across North American.

    • Bigham Services, Inc. Joins the One Hour Heating & Air Conditioning Franchise

      Bigham Services, Inc. is a full service heating and air conditioning company providing service in the North Bay for the past 19 years. In 2004, owner Paul Bigham, joined the One Hour Heating & Air Conditioning franchise in order to provide homeowners with the best equipment, value and customer service that is available. The One Hour Franchise was founded with the premise of providing the best value to the customer with a model of legendary service and exact standards of performance on all service calls. All employees are background checked and randomly drug tested to insure the safety of our homeowners. Nationwide buying power offers the customer an incredible value in the heating and air conditioning equipment that is offered.

    • DIAMOND CERTIFIED: One Hour Heating & Air Conditioning Independently Rated Highest in Quality FIFTH CONSECUTIVE YEAR

      We declare that One Hour Heating & Air Conditioning HAS QUALIFIED for and continues to meet the Ongoing Research and Rating Requirements for Diamond Certified® status.

      One Hour Heating and Air Conditioning, an independently owned company, is part of a national franchise dedicated to providing superior products and customer service. They specialize in installing and maintaining the highest quality heating and cooling systems available. Professional, highly trained technicians and comfort advisors can design an energy-efficient climate control system or upgrade the current system for any home. They also offer a variety of air quality products that remove allergens and impurities to maintain a healthy living environment.

      Affordable maintenance programs offer a lifetime warranty on all repairs and ensure that your heating and cooling system operates at peak efficiency and provides you with years of comfort. One Hour guarantees ontime service, and backs it up by promising that if their technicians do not arrive on time, or if the customer is unhappy with the service provided, the customer doesn't pay a dime. All of their associates participate in ongoing training to keep their mechanical and customer service skills honed. With mandatory background checks and drug testing, One Hour will never put a person in your home that they wouldn't want in theirs.

A family of home services:

Strong partnerships and a national support system.

Independently owned and operated.