What it puts out
Generac rates it at 26,000 watts on propane and 22,500 watts on natural gas: 3,500 watts less on natural gas. If your home is on natural gas, size from the natural gas figure.
Generac Guardian 26kW home standby
Generac 26kW generator installed in San Antonio
Generac rates the Generac Guardian 26kW at 26,000 watts on propane and 22,500 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 26kW in plain terms
What is the difference between the Generac 24kW and 26kW generators?
The 26kW is rated 1,500 watts more on natural gas: Generac lists 22,500 watts against the 24kW's 21,000. On propane Generac rates it at 26,000 watts. If your home is on natural gas, size from the natural gas figure, and your load list, including how the air conditioning starts, decides whether you need it.
What it can run
A 26kW 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 24kW below it is rated 21,000 watts on natural gas, 1,500 watts less.
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 26kW 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 26kw generator installation? Call or get a quote.
From Generac's published specifications
What are the Generac 26kW generator's specifications?
Generac's published figures list the Guardian 26kW, base model G007290, at 26,000 watts on propane and 22,500 watts on natural gas. It has a G-Force 1000 engine, a 110 amp main line circuit breaker and weighs 518 lb, the heaviest of the five sizes. Generac publishes a 5 Year Limited Warranty, subject to its written terms.
| Generac base model | G007290 |
|---|---|
| Rated power, propane | 26,000 watts |
| Rated power, natural gas | 22,500 watts |
| Engine | G-Force 1000 |
| Main line circuit breaker | 110 amps |
| Weight | 518 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 26kW product page and its spec sheet.
Questions about generac 26kw generator installation? Call or get a quote.
Generac quote
Is the Generac 26kW 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 26kW generator?
Straight answers. If you do not see yours, call us and ask.
Generac rates it at 26,000 watts on propane and 22,500 watts on natural gas.