Free tool
Generator Size Calculator
Working out whole-house generator sizing for a Charleston Lowcountry home? Pick your central-AC size and check the circuits you want to keep running, and this generator size calculator estimates the capacity (in kW) to cover them, a solid planning ballpark. Your installer confirms it with a real load calculation (see the sizing guide).
Get an exact size, free
The calculator gets you in the ballpark. For the real number, we’ll connect you with a vetted local installer who measures your actual loads and quotes it, no cost, no pressure.
Get your free quote
Tell us about your home, we’ll connect you with a vetted local installer.
Request received
Thanks, your details are on the way to a vetted local installer. Expect a call shortly.
Keep the lights on when the next storm hits
Get a free, no-pressure quote from a vetted local installer, or call now to talk it through.