Recommended size: 15,000–22,000W+
A 15,000–22,000W+ standby generator is what you need for whole-home backup including central AC. These permanently installed units start automatically within seconds of a power outage and run on natural gas or propane, so there is no refueling. They include a 200A transfer switch for direct panel connection.
Market-leading whole-home standby generator. Includes 200A transfer switch. Powers everything including central AC automatically when the grid goes down.
Central AC draws 10,500+ starting watts on its own, which pushes the total home load past what any portable generator can handle reliably. Standby generators solve this by delivering 15,000–22,000W+ continuously from a permanent installation connected to your home's natural gas line or a large propane tank. They start automatically when the grid goes down and switch back when power returns. Installation requires a licensed electrician and typically costs $500–$1,500 on top of the unit price. The 200A transfer switch included with both models below handles the full capacity of most residential electrical panels.
Generac
★4.2
Market-leading whole-home standby generator. Includes 200A transfer switch. Powers everything including central AC automatically when the grid goes down.
Champion
★4.2·249 ratings
Strong Generac alternative with 200A transfer switch included. Competitive pricing and quiet 67 dB operation for whole-home backup.
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