What it puts out
Generac rates it at 24,000 watts on propane and 21,000 watts on natural gas: 3,000 watts less on natural gas. If your home is on natural gas, size from the natural gas figure.
Generac Guardian 24kW home standby
Generac 24kW generator installed in San Antonio
Generac rates the Generac Guardian 24kW at 24,000 watts on propane and 21,000 watts on natural gas. Whether that carries your house depends on your load list, which a free sizing visit settles.
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The 24kW in plain terms
Is a Generac 24kW generator enough for my house?
It depends on what you want running at once and on how your air conditioning starts. Generac rates the 24kW at 24,000 watts on propane and 21,000 watts on natural gas, which is 1,500 watts more on natural gas than the 22kW. We list your loads at a free sizing visit and tell you whether this size fits.
What it can run
A 24kW 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 22kW below it is rated 19,500 watts on natural gas, 1,500 watts less. The 26kW above it is rated 22,500 watts on natural gas, 1,500 watts more.
Transfer switch
The unit needs a transfer switch matched to your service and to the loads you choose: whole house, essential circuits, or load management for large air conditioning loads.
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 24kW 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 24kw generator installation? Call or get a quote.
From Generac's published specifications
What are the Generac 24kW generator's specifications?
Generac's published figures list the Guardian 24kW, base model G007209, at 24,000 watts on propane and 21,000 watts on natural gas. It uses the G-Force 1000 engine and weighs 455 lb, a little less than the 22kW's 466 lb. Generac publishes a 5 Year Limited Warranty and notes specifications are subject to change without notice.
| Generac base model | G007209 |
|---|---|
| Rated power, propane | 24,000 watts |
| Rated power, natural gas | 21,000 watts |
| Engine | G-Force 1000 |
| Weight | 455 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 24kW product page and its spec sheet.
Questions about generac 24kw generator installation? Call or get a quote.
Generac quote
Is the Generac 24kW 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 24kW generator?
Straight answers. If you do not see yours, call us and ask.
Generac rates it at 24,000 watts on propane and 21,000 watts on natural gas.