What size standby generator is needed to power an entire 1,500 square foot home during a power outage?

Answer: 15-20 kW
Explanation: To power an entire 1,500 sq ft home—not just essential circuits—you typically need a 15–20 kW standby generator. Whole-home coverage means the generator must handle: All lighting and outlets Refrigerator and freezer Microwave and small appliances Furnace blower or air handler Possibly central AC (depending on tonnage) Water heater (if electric) Laundry equipment General household load diversity A 10–15 kW unit is perfect for essential circuits, but once you include HVAC, kitchen loads, and simultaneous usage, the demand increases significantly. That’s why most installers size whole-home systems in the 15–20 kW range for homes around 1,500 sq ft.

Answer: 20-25 kW
Explanation: This depends on whether the house is all electric, has energy efficient appliances and the type of lighting connected.

Answer: 15-20 kW
Explanation: Depending on how many appliances are being connected to a smaller home standby generator system it is possible to power entire home with a 15 to 20 kW generator.

Answer: 15-20 kW
Explanation: Depends on the electrical load of the house and air conditioning etc. Most of the ones I did used a 17kw without AC or small AC, 20kw with bigger central air.

Answer: 20-25 kW
Explanation: Again, there considerations that need to be determined for the most accurate size requirement.

Answer: 15-20 kW
Explanation: Depends on the size of the central air conditioning units