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Generators in Ontario, CA: we connect you with top-rated local generator installers, checked by our team — their proposals come straight to your Homeshi account. Free for property owners.

Generators in Ontario: San Bernardino County has seen flash floods and floods in the last 10 years, with hail up to 1.75 inches.

Weather and your home

In San Bernardino County, July highs average about 101°F and January lows about 39°F, with roughly 7 inches of rain a year. That much heat keeps air conditioners running hard for months, so a yearly tune-up pays off.

Storms

Over the last 10 years the National Weather Service recorded flash floods, floods and damaging thunderstorm winds in San Bernardino County, with hail up to 1.75 inches across. After a storm, a quick roof and gutter check catches damage before it turns into a leak.

Disaster history

San Bernardino County has had 40 federal disaster declarations in the last 25 years, most often for wildfires; the latest was Bridge Fire (2024).

Services

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Questions

What size generator do I need?

Enough for the fridge, heating or cooling, lights and medical equipment; the pro sizes it from what you want running.

Standby or portable?

A standby generator starts on its own in an outage; portable is cheaper but has to be wheeled out and fuelled.

These are San Bernardino County figures — more about homes in San Bernardino.

Nearby

Chino · Eastvale · Montclair · Upland · Rancho Cucamonga · Jurupa Valley · Norco · Claremont