• Available 24/7-365 for service, repairs, sales, load bank tests, rentals and all other things generator!
  • Northern California's largest 'Elite' level Generac dealer for authorized sales and service
  • Authorized Gillette, Kohler, GE/Zenith and Blue Star dealer for sales and service
  • Factory-certified technicians available for Kohler, Generac, MTU, Caterpillar, Zenith, Onan and more...
  • Based in Hayward, CA , we provide mobile service to the Greater San Francisco Bay Area
  • Please see our television ad on KTLN (or you can view it here).
  • We also have branches serving the Amador County, Reno and Seattle areas.
  • Onan, Caterpillar, Kohler, Generac, Detroit Diesel/MTU, MQ - we service them all!
  • We sell and service Generac, ASCO, GE/Zenith, CAT and other major brand ATS (Automatic Transfer Switches)
  • We provide full service for all automatic transfer switches (as well as bypass types) to NFPA-110 and JCo standards.
  • EGSA and OSHA certified technicians.
  • We work with generators powered by natural gas, propane, diesel, gasoline and their combinations.
  • Have a 10 second start requirement? We provide safety inspections and written certificates of compliance.
  • We provide generator sales and installations meeting NFPA-99 and NFPA-110 regulations.
  • Do you need a remote annunciator or remote monitoring? We are the leading provider of custom annunciator installations.
  • We provide home, commercial and industrial standby generator solutions with a focus on turn-key installations.
  • We specialize in custom installation solutions where attention to detail is paramount.
  • Have solar panels? Whether you just need advice or a gen backup for your off-grid energy system, let us help you.
  • If you want a tri-fuel with a 90-day runtime for a worst-case scenario, we can usually make it happen.
  • We offer service contracts as well as per-visit generator maintenance.
  • California C-10 Electrical Contractor License #914864
  • We carry the $1M insurance ($2M aggregate) required by most government agencies.
  • AAAA Generator Services is able to comply with vendor requirements that are above and beyond our normal offerings. These include third party Vendor Compliance Management Services (VCMS), additional insurance (above our normal $2,000,000), etc.
  • Se habla Español - just don't talk too fast!


Our Company Mission

AAAA Generator Services is a family-run business

Our goal is to help you make the best decision possible for your generator needs. This includes extensive research to help you find the best product for the most competitive price.

We take pride in offering our clients the highest level of service and full client satisfaction. We believe that our hard work, honesty and integrity will continue earning your generator business.

We have years of experience with ALL major brands including:

  • Generac / Guardian / Centurion / Honeywell
  • MultiQuip (MQ)
  • Caterpillar / Olympian
  • Cummins / Onan
  • Detroit Diesel/MTU
  • Kohler
  • John Deerev
  • Katolight
  • Kubota
  • MMD
  • Multiquip
  • Allis-Chalmers
  • Teledyne / Bambozzi
  • Northern Lights
  • North Star
  • Elliott Magnetek
  • Simpower
  • Electro-Motion
  • Synergy
  • Coleman/Powermate
  • ASCO
  • GE/Zenith

and too many other brands to mention

We specialize in the following types of electric generators:

  • Residential air cooled standby power generators
  • Residential and Commercial liquid cooled dry-fueled standby power generators
  • Industrial diesel generators
  • Acute and sub-acute care facility generators with NFPA99 and NFPA110 (must transfer in 10 seconds) requirements.
  • Convalescent home generators, nursing home generators, hospital generators, etc.
  • Diesel generators
  • Natural gas generators
  • Propane generators
  • Bi-fuel generators (uses two fuels simultaneously - usually natural gas/diesel, propane/diesel)
  • Dual-fuel generators (can run on two fuels but only one fuel at a time - usually natural gas/propane)
  • Stationary generators
  • UPS (Uninterruptible Power Supply) power systems from APC and GE