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Whole House Generator vs Portable: What Illinois Homeowners Should Know

Standby generator or portable? Compare cost, convenience, transfer switches and sizing for Illinois storms and winter outages.

By the LED Electric team ยท Updated 2026-11-08

Portable generators

Lower upfront cost, but you must start them manually, refuel them, and never run them indoors or in a garage. A manual transfer switch and inlet makes them far safer than extension cords.

Standby generators

Start automatically within seconds, run on natural gas or propane, and can power the whole home including furnace and sump pump โ€“ critical in an Illinois winter.

Sizing

Essential circuits: 14โ€“18 kW. Whole home with central air: 22โ€“26 kW. We perform a load calculation. See generator installation.

Pair with surge protection

Generators and utility switch-overs cause surges. A whole house surge protector is a smart add-on.

Get help from a local Illinois electrician

LED Electric provides generator installation and every other electrical service in all Illinois cities. Find your city or call (888) 592-6466.

Need an electrician today?

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