What it puts out
Generac rates it at 22,000 watts on propane and 19,500 watts on natural gas: 2,500 watts less on natural gas. If your home is on natural gas, size from the natural gas figure.
Generac Guardian 22kW home standby
Generac 22kW generator installed in San Antonio
Generac rates the Generac Guardian 22kW at 22,000 watts on propane and 19,500 watts on natural gas. Whether that carries your house depends on your load list, which a free sizing visit settles.
We sell and install Generac home standby and commercial generators.
- Licensed and Insured
- BBB Accredited
- Veteran Owned
- TECL 41806
The 22kW in plain terms
What will a Generac 22kW generator run?
A Generac 22kW runs the loads that fit inside 22,000 watts on propane or 19,500 watts on natural gas at once, including how your air conditioning starts. Generac sells this model with a 200 amp, NEMA 3R smart switch for up to whole house protection. Your load list, taken at a free sizing visit, says whether that covers your house.
What it can run
A 22kW unit carries the loads that fit inside its rating at the same time, including the extra current a central air conditioner draws as it starts. Only your load list can say whether that is the whole house or a set of essential circuits.
- Your air conditioning and how it starts
- The refrigerator, freezer and well or sump pump
- Medical equipment and the home office
Compared with the sizes beside it
The 18kW below it is rated 17,000 watts on natural gas, 2,500 watts less. The 24kW above it is rated 21,000 watts on natural gas, 1,500 watts more.
Transfer switch
Sold with a 200 amp, NEMA 3R smart switch for up to whole house protection (model G007043). Whether that switch suits your service, or an essential circuit switch fits better, is part of the sizing visit.
Installation
We set the unit, install and wire the transfer switch, pull the electrical permit and start it up under load. Gas line and gas connection are not included. That is a licensed plumber's work and we quote it separately.
Cost
The installed price for a 22kW is the unit plus the switch, the electrical work, the gas line, placement and the permit. We write yours after the free sizing visit.
Questions about generac 22kw generator installation? Call or get a quote.
From Generac's published specifications
What are the Generac 22kW generator's specifications?
Generac's published figures list the Guardian 22kW, base model G007043, at 22,000 watts on propane and 19,500 watts on natural gas, 2,500 watts less on natural gas. It moves up to the G-Force 1000 engine and weighs 466 lb. Generac publishes a 5 Year Limited Warranty and says specifications are subject to change without notice.
| Generac base model | G007043 |
|---|---|
| Rated power, propane | 22,000 watts |
| Rated power, natural gas | 19,500 watts |
| Engine | G-Force 1000 |
| Weight | 466 lb |
| Warranty, as Generac publishes it | 5 Year Limited Warranty |
Figures as Generac published them on 2026-10-31. Generac notes that specifications are subject to change without notice, and the written warranty terms for the exact model are Generac's. Source: Generac's 22kW product page and its spec sheet.
Questions about generac 22kw generator installation? Call or get a quote.
Generac quote
Is the Generac 22kW right for my house?
Leave your name and number. We set the free sizing visit and tell you plainly which size fits.
Prefer to talk? Call (210) 446-5446.
FAQ
What do people ask about the Generac 22kW generator?
Straight answers. If you do not see yours, call us and ask.
Generac rates it at 22,000 watts on propane and 19,500 watts on natural gas.