A whole house standby generator starts automatically within 10 seconds of a power outage. These seven represent the most trusted options for permanent installation — from entry-level home coverage to full-estate power.
All 5 whole house generators side by side.
| Product | Best For | Price | Key Spec | Buy |
|---|---|---|---|---|
| 🥇 Generac 7043 Guardian 22kW | Best Overall | $4,999–$6,499 | 22kW | Read review → |
| 🔧 Briggs & Stratton 40538 20kW | Best for Reliability | $4,499–$5,499 | 20kW | Read review → |
| 🏆 Kohler 20RESCL 20kW | Best Premium | $5,499–$7,999 | 20kW | Read review → |
| 💰 Champion 100179 12.5kW | Best Entry-Level | $2,499–$3,499 | 12.5kW | Read review → |
| 🏠 Champion 14kW Home Standby | Best Budget Pick | $3,499–$3,999 | 14kW | Read review → |
Compare the core specification, price, warranty, setup requirements, and the use case you care about most. Generac 7043 Guardian 22kW is the starting point for most shoppers, but a different badge may fit a narrower need better.
Prices vary by feature set and seller. Use the ranges shown in the comparison table as a planning guide, then confirm today's price, availability, shipping, and return terms on Amazon before ordering.
The easiest option is usually the product with the clearest setup, controls, and maintenance routine. Read the product review and specifications together because convenience often depends on accessories or software.
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Our top pick for whole house generators is the Generac 7043 Guardian 22kW. Generac 7043 Guardian 22kW earns our overall recommendation for its balance of useful features, ease of use, and value.
View Generac 7043 Guardian 22kW on Amazon →Affiliate link — we may earn a commission at no extra cost to you.