How many watts do I need to back up my home?

Verified-purchase reviewers buying for home backup in this pool gravitated toward the higher-output Westinghouse dual-fuel and tri-fuel units (12,000W and up) for running multiple circuits, while smaller inverter units around 3,000-5,000W are more commonly used for essentials like a fridge, lights, and electronics. Sizing depends on which appliances you intend to run simultaneously; a transfer-switch-ready model is worth prioritizing if you plan to wire into your panel.