10/12/2026
What Size Whole-Home Generator Do I Actually Need?
The right whole-home generator size isn't determined by your home's square footage alone.
Two 2,500-square-foot houses can have very different power requirements.
One might have:
• Gas heat
• Gas water heating
• Gas cooking
Another might have:
• Heat pumps
• Electric water heaters
• Electric cooking
• Well pumps
• EV charging
• Additional HVAC equipment
That's why proper generator sizing begins with understanding what you actually want powered during an outage.
We look at electrical loads, major equipment, starting demand, fuel availability, transfer equipment and the priorities of the homeowner before recommending a system.
The goal isn't simply:
“What's the biggest generator we can install?”
It's:
“What's the right backup-power system for this house?”
PowerMaster Electric is a Generac Factory Authorized Dealer serving Raleigh, Durham and communities throughout the Triangle.
Want to know what size generator your home actually needs? Schedule a free generator consultation:
PowerMaster Electric
919-557-4477
PowerMasterElectric.com
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