The San Francisco Bay Area’s preferred electrical and HVAC services team

Gentec Services, Inc. is a Livermore based team of electricians and HVAC technicians who serve residential, commercial, industrial, and municipal customers throughout Alameda and Contra Costa county. Gentec Services, Inc. goes far beyond simple electrical and HVAC repairs to offer the industry’s most complete collection of services, from basic equipment installations to large scale electrical and HVAC designs, system audits, solar panel installations, airflow systems, electrical automatic systems, motor controls, bus ducts, security cameras, and much, much more.

While there are many many contractors you can call for your electrical, heating & air conditioning needs, you’ll be hard pressed to find a more professional, dependable, and comprehensive service, anywhere in the Bay Area. Our technicians take the time to understand your needs, even if you don’t completely understand them yourself, and we work with all of our customers to develop solutions that last longer and perform better.


Leading Bay Area Electrical & HVAC TeamWhy Call Gentec?

  • We hire state certified electricians and HVAC specialists
  • Our service technicians are clean cut, uniformed and trained in great customer service
  • We always answer the phone, 24 hours a day, 365 days a year
  • Over 35 years of combined company experience
  • We’re a multidiciplinary team that can cover an extraordinarily wide range of services
  • We have been in business for 15 years, and Diamond Certified for 11 years in a row
  • We believe in paying fair wages and offering fair medical coverage, so our technicians are always happy, healthy, and helpful
  • We’re only successful when our customers are 100% satisfied

Our Hours

24 hour Emergency Electrical & HVAC repairs for our Service Elite Partners only

Our regular operating hours are:

Monday – 7:00am – 6:00pm
Tuesday – 7:00am – 6:00pm
Wednesday – 7:00am – 6:00pm
Thursday – 7:00am – 6:00pm
Friday – 7:00am – 6:00pm
Saturday – By appointment only
Sunday – Closed

Our Expertise

The company and word GENTEC came about because of a tag line we often used “GENerating Quality for Todays TEChnologies” Over the years we’ve continued to transition from one technology to the other as it relates to electrical or electronics, recently about 2 years ago when we were searching for a new logo our office manager at the time Jan, piped in and said ” what about a puzzle, it seems like every job we’re always connecting pieces together” hence the new logo and the new look.

After 10 years of searching for “our calling” we finally feel as though we’ve arrived, GENTEC Services, Inc. is a Bay Area-based electrical services and HVAC company. Some construction companies try to do service too and we’ve found that we do service type work really well so this is our core competency. With this mindset we’ve taken on “construction type projects” and these projects represent the “technology” or the connecting of “technologies” that we excel at. Recently we expanded our core competency to include our “Electronic Systems” division.

Five Pillars of Excellence

  1. To provide a safe harbor to those employees who choose to work for GENTEC Services, that their lives may be enriched more, both personally and professionally.
  2. To serve our clients by providing well-adjusted technicians who demonstrate excellence in customer service and technical competency.
  3. To provide our clients peace of mind by demonstrating our commitment to serving their needs as our own.
  4. To treat others as we would want to be treated, going out of our way to serve others in all we do.
  5. To give back to the community we serve.


100% Satisfaction or Your Money Back Guarantee

  • Lifetime on New Electrical Panels
  • 10 Years on electrical Parts & Labor
  • One Year 100% Money Back Satisfaction HVAC Guarantee
    • If you are not satisfied with your new HVAC system within one year of the original installation date, GENTEC Services, Inc. will repair the problem at no charge or remove the installed components and refund the installation price.
  • All duct work connections, transitions, flue piping, gas and electrical connections will be repaired at any time following a new HVAC system installation at no cost to the original purchaser, provided the original homeowner still resides in that home.

Community Involvement

We recognized from the beginning true happiness comes from giving back and serving others. This is why we gladly donate our services to the following bay area charities:

1Peter 4:10
“Each one should use whatever gift he has received to serve others, faithfully administering God’s grace in its various forms.”