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What size generator for a ~2,500 sq ft home?

A typical mid-size home running the appliances below during an outage needs a generator covering both the running load and the largest single motor surge.

Typical must-run appliances

Total running
5,980 W
Peak (with surge)
8,380 W

Generators that fit this load

7,500 W run · 9,375 W start · Open frame · Dual fuel (gas + propane)
74 dBA · up to ~8 h on gasoline at 50% load
8,000 W run · 10,000 W start · Open frame · Gasoline
~11 h at 50% load
Best overall for home backup
9,500 W run · 12,500 W start · Open frame · Gasoline
74 dBA · up to ~12 h at 25% load
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