Standby & whole house generator installation in Diablo, Contra Costa County. Local electricians, upfront pricing and fast scheduling.
(833) 652-8933 Request a quotePublic Safety Power Shutoffs, wildfire season and winter storms make backup power a practical need in Diablo. Phasethree Electric installs whole house standby generators, Generac and Kohler systems, automatic transfer switches and manual transfer switches with portable generator inlets for homes and small businesses in Diablo and across Contra Costa County.
We size the generator to your real loads, pour or set the pad, run the electrical connection to a transfer switch at your panel, coordinate the gas or propane connection, pull the permit and start up and test the unit. Automatic units start within seconds of an outage.
If a full standby system is more than you need, a manual transfer switch and outdoor inlet lets you safely power selected circuits from a portable generator without extension cords through windows.
We also service and repair existing generators, replace batteries, and add load management modules so a smaller unit can run more of the house. Call (833) 652-8933 for Diablo and nearby Danville, Alamo, San Ramon, Clayton.
We provide generator installation throughout Diablo and the surrounding communities of Contra Costa County.
Most homes need 14 to 26 kW for whole house coverage. We run a load calculation so you are not overpaying.
Electrical work is usually one day. Total time depends on gas connection and permit scheduling in Diablo.
Yes, an annual service with oil, filter and a load test keeps the warranty valid and the unit reliable.
“Had them do a full electrical inspection before we bought our house. The photo report saved us thousands in negotiations.”
Robert K.“They rewired our 1948 house room by room and we never lost power overnight. Walls were patched cleaner than we expected.”
Tom & Linda R.“Hot tub circuit and disconnect installed and inspected in a week. Everything was labeled and explained.”
Carlos D.Upfront pricing · Same-day service · 24/7 emergency response