The right generator size depends on what you want to power during an outage. Here’s a simple guide for Colorado homes:
- 10–14kW — Powers essentials: lights, refrigerator, furnace, outlets, and a few appliances. Best for smaller homes under 1,500 sq ft.
- 18–22kW — Powers your entire home including central AC, well pump, and multiple appliances simultaneously. The most popular choice for 1,500–3,000 sq ft homes in Denver.
- 24–36kW — Large homes over 3,000 sq ft, homes with electric vehicle chargers, or properties with high electrical demand.
A licensed electrician will perform a load calculation during your estimate to determine the exact right size for your home. Oversizing wastes money; undersizing means the generator trips during heavy use. The Electricians recommends Generac’s 22kW unit for most Denver-area homes — it handles Colorado winters including furnaces, sump pumps, and refrigeration without strain.
