Generac Next Gen 18kW Air-Cooled Home Standby Generator — Model 7259
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At a glance
- Standby Power
- 18 kW LP / 17 kW NG
- Voltage/Phase
- 120/240V, Single-Phase, 60 Hz
- Fuel
- Dual-fuel: Natural Gas or Liquid Propane (field-selectable)
- Engine
- Generac G-Force 800 Series, 817cc 2-cylinder OHV with Electronic Fuel & Ignition Control
- Cooling
- Air-cooled
- Sound Level
- 65 dBA normal operation / 55 dBA Quiet-Test exercise mode
- Connectivity
- Built-in Cellular, Wi-Fi & Bluetooth with Mobile Link remote monitoring
- Dimensions
- 46.42" L x 26.3" W x 30.7" H
- Weight
- 426 lb
- Warranty
- 5-Year Limited Warranty
Why this generator
- Next Gen dual-fuel design runs on natural gas or propane, field-selectable for 50-state installation flexibility
- G-Force 800 Series 817cc engine with electronic fuel and ignition control delivers 18 kW on LP / 17 kW on NG
- Built-in cellular, Wi-Fi, and Bluetooth with Mobile Link lets you monitor and manage your generator from anywhere
- Quiet-Test self-test mode runs at just 55 dBA, with full-load operation at 65 dBA
- All-aluminum, corrosion-resistant enclosure is wind-rated to 150 mph and approved for placement as close as 18 inches from your home
- True Power Technology delivers clean, utility-grade power with less than 5% THD, safe for sensitive electronics
Everything you need to know
Generac Next Gen 18kW air-cooled home standby generator (model 7259). Generac's newest generation with the purpose-built G-Force engine, dual fuel (natural gas or LP), 50-state compliant.
Genuine Generac unit from a factory-authorized dealer. Free shipping to the lower 48. Professional installation available in NC & SC.
Frequently asked questions
What fuel does the this generator run on?+
The unit runs on natural gas or LP (propane), selectable at install.
Does the price include installation?+
No — the online price covers the unit shipped free to the lower 48. Professional installation is available in NC & SC on a quote basis; outside that area we'll help you find a qualified local installer.
How fast does it ship?+
Free curbside / liftgate shipping to the contiguous 48 states. Most orders leave the warehouse in 3–5 business days.
What warranty is included?+
5-year limited factory warranty, registered and supported directly through Generac.
Is financing available?+
Yes — 0% APR financing is available on qualifying orders. Ask us for details before checkout.
Free curbside shipping
Liftgate delivery to the lower 48. Most orders leave the warehouse in 3–5 business days.
Install help, no upsell
We size, spec, and connect you with a vetted local installer — or talk your contractor through it for free.
Real Cummins warranty
Full 5-year / 2,000-hour limited warranty — registered and supported through Cummins directly.