Hayward and South Bay Area

Welcome to ABC Cooling & Heating!

Since 1955, we have been providing award-winning service to homeowners in the greater Hayward area and throughout the South Bay.

We offer residential Home Performance Contracting solutions that increase your in-home comfort, health and safety and significantly reduce your energy usage and utility bills. Since 1955, we have also been providing premier and dependable air conditioning repair, service, sales and installations. We’re excited to be a part of the GreenHomes America family which has improved the comfort and energy efficiency of over 10,000 families like yours!

  • Area Served: Hayward and the South Bay
  • Concord
  • San Jose

ABC Cooling & Heating

31845 Hayman Street
Hayward CA 94544 

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General Manager:

Scott Lunday

Contractor license:


  • Comprehensive Home Energy Assessments
  • Cooling & Heating Equipment (Repair, Installation & Tune-ups)
  • Hot Water Systems
  • Indoor Air Quality Solutions
  • Insulation (Wall & Attic) and Air Sealing (Air or Duct)
  • Solar Thermal
  • Windows and doors
Whole-House Approach

ABC Cooling & Heating, a GreenHomes America Partner, offers residential Home Performance Contracting (HPC) solutions that increase in-home comfort, health, and safety and significantly reduce energy usage and utility bills. We apply building science principles and sophisticated diagnostic equipment to quickly pinpoint causes of common problems and prescribe cost-effective solutions that resolve them permanently. 

What sets us apart from the many other residential building contractors is our innovative use of an integrated, whole-house approach to home performance and energy efficiency. Our unique HPC methodology allows us to go beyond the usual HVAC and specialty contractor guesswork and quickly and accurately solve a home’s comfort and energy efficiency issues. 

Beyond the principles of HPC, GreenHomes and ABC’s business model also employs a unique business methodology built on strict adherence to quality, process, technology, education, and standards. This exclusive methodology allows us to raise the bar on service delivery for the entire industry by consistently providing high quality service to every customer every time.

Get started today by having a Home Performance Assessment scheduled as your first stepInternet Special Coupon
in identifying where you could be saving money.  Ask about the Energy Upgrade California program and how you can get up to $4,000 in cash rebates!

Get your Internet Special promotional coupon, here!

Local Rebates and Incentives
Federal Rebates
Energy Certified Professionals
ABC Owner/President: Jerry Unruh

Rob Foldessy
Building Analyst
BPI, NATE and EPA Certified
Jeff Cecchin
Comfort and Energy Advisor

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