How Big of a Standby Generator Does a Texas Home Need?

Start with your AC

Central air is the largest load. A 3–5 ton system typically needs 18–24 kW of generator capacity with a soft-start, or load-shedding modules.

Refrigerator, well pump, lighting, medical equipment, internet and a few outlets usually add 3–6 kW.

Whole-home systems power everything automatically; essential-circuit setups use a smaller generator and a dedicated sub panel.

Natural gas is unlimited runtime; propane needs a tank but works anywhere. Fuel affects generator output ratings.

Site survey, pad and placement, transfer switch wiring, gas hookup coordination, startup and a weekly self-test schedule.

Need help with generator installation? Learn about our generator installation service or call (888) 592-6466 — we serve every city in Texas, 24/7.