Generators for Sale — Whole-House, Standby & Commercial Power

Whole house generators for sale

A whole house generator — also called a home standby generator — is installed outside your home and starts automatically within seconds of an outage. Shop whole house generators for sale by size, fuel and package, and see the full list of current generator prices to understand total whole house generator cost. Every listing shows the selling price up front, so you can buy online in minutes instead of waiting for a quote.

How to choose the best whole house generator for your home

The best whole house generator is the one sized to your actual loads, on the fuel you already have. Start with a load calculation, then compare units side by side: output on natural gas vs propane, transfer switch options, and what's included in the box. Our generators for sale page lets you sort by price and filter by fuel to narrow the choice fast.

Generators for sale near you — shipped nationwide

You don't need a local dealer to buy a generator. We ship standby, portable and commercial generators to homes, farms and job sites across the U.S. by freight. Order online, and have a licensed local electrician handle installation and permits.

Natural gas vs propane standby generators

Shop natural gas generators or propane generators. Most residential standby generators run on either natural gas or liquid propane. Natural gas is supplied by your utility, so there's no tank to refill, but output is usually a little lower than the propane rating. Propane is stored on site in a tank sized for your expected runtime. Always compare the manufacturer's rating for the fuel you'll actually use. Compare whole-house generators.

How to choose generator capacity

Add up the running watts of everything you want to power, then account for the extra starting power large motors such as air conditioners and well pumps need. A licensed electrician can perform a load calculation to confirm sizing. Many mid-size homes consider 22kW standby generators; larger homes often look at 24kW or 26kW units.

Understanding automatic transfer switches

An automatic transfer switch watches utility power. When it fails, the switch signals the generator to start and moves your home's electrical load over, then switches back when power returns. The switch amperage should match your service — commonly 200A for homes. View generator transfer switches or shop generator and transfer switch packages.

Delivery and installation

Standby and commercial generators ship by freight. Prices cover equipment only unless stated; installation should be performed by licensed professionals following local permit requirements.