Generac Guardian 18kW Air-Cooled Home Standby Generator — Model 7226
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At a glance
- Standby Power
- 18 kW LP / 17 kW NG
- Voltage/Phase
- 120/240V, Single-Phase, 60 Hz
- Fuel
- Natural Gas or LP (field-selectable dual fuel carburetion)
- Engine
- Generac G-Force 800 Series, 816cc 2-cylinder OHV
- Cooling
- Air-cooled
- Sound Level
- 65 dBA at normal load / 55 dBA in Quiet-Test exercise mode (at 23 ft)
- Connectivity
- Standard WiFi with free Mobile Link remote monitoring
- Main Breaker
- 80 Amp
- Dimensions
- 48 in L x 25 in W x 29 in H
- Weight
- 420 lb (191 kg)
- Warranty
- 5-year limited warranty
Why this generator
- 18,000 watts of standby power on LP (17,000 W on natural gas) - enough to back up most whole-home essentials including central A/C
- Generac's purpose-built G-Force 800 816cc engine handles extended run times with a 2-year/200-hour oil change interval
- True Power Technology delivers under 5% total harmonic distortion - clean, utility-grade power safe for sensitive electronics
- Standard WiFi with free Mobile Link remote monitoring - check status, maintenance alerts, and run history from any smartphone
- Quiet-Test self-test mode runs at just 55 dBA, and the sound-attenuated enclosure withstands 150 mph winds
- Installs as close as 18 inches from the home; UL 2200 listed and backed by Generac's 5-year limited warranty
Everything you need to know
Generac Guardian Series 18kW air-cooled home standby generator (model 7226). Runs on natural gas or LP (field-selectable), WiFi-enabled with Mobile Link remote monitoring, aluminum enclosure.
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.