Generac Standby Generator 18kW (7259)
A permanently installed 18 kW home standby generator: 18 kW on propane, 17 kW on natural gas, with built-in cellular monitoring. 5-year limited warranty.
- Running watts
- 18,000 W
- Fuel
- propane, natural gas
- Best for
- Automatic whole-home backup, including central air, through a transfer switch.
- Not for
- DIY installation or renters. It needs a dealer install, a transfer switch and a gas supply.
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Specifications
| Running watts | 18,000 W |
|---|---|
| Fuel | propane, natural gas |
| Weight | 426 lb |
|---|---|
| Length | 46.42 in |
| Width | 26.3 in |
| Height | 30.7 in |
| Standard warranty | 5 years |
|---|
Checked 30 October 2026. Sources: generac.com.