Generac Guardian 18kW Air-Cooled Home Standby Generator with 200A SE Transfer Switch — Model 7228
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At a glance
- Standby Power
- 18 kW LP / 17 kW NG
- Voltage/Phase
- 120/240V, Single-Phase
- Fuel
- Natural Gas or Liquid Propane (dual-fuel carburetion, field-selectable)
- Engine
- Generac G-Force 800 Series 816cc V-Twin OHV
- Cooling
- Air-cooled
- Sound Level
- 65 dBA normal operation / 55 dBA Quiet-Test exercise
- Connectivity
- WiFi-enabled with free Mobile Link remote monitoring
- Transfer Switch
- 200A Service-Entrance Rated ATS included (NEMA 3R, whole-house with load management)
- Dimensions
- 48 in L x 25 in W x 29 in H (generator)
- Weight
- 420 lbs (generator)
- Warranty
- 5-year limited warranty
Why this generator
- Whole-house backup bundle: 18 kW (LP) generator paired with a 200A service-entrance rated automatic transfer switch with smart load management
- Purpose-built Generac G-Force 800 Series 816cc V-Twin engine engineered for rigorous generator duty with 2-year/200-hour maintenance intervals
- Free Mobile Link WiFi remote monitoring lets you check generator status from anywhere on your phone, tablet, or PC
- True Power Technology delivers clean power with less than 5% total harmonic distortion - safe for sensitive electronics
- Quiet-Test self-test mode runs at just 55 dBA, with 65 dBA at normal load - about as quiet as a central air conditioner
- RhinoCoat powder-coated aluminum enclosure resists corrosion for all-weather durability, backed by a 5-year limited warranty
Everything you need to know
Generac Guardian Series 18kW air-cooled home standby generator (model 7228). Runs on natural gas or LP (field-selectable), WiFi-enabled with Mobile Link remote monitoring, aluminum enclosure.
Bundle includes a 200a se transfer switch — everything needed for a streamlined whole-home install.
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.
Is a transfer switch included?+
Yes — this configuration ships as a combo with a matched automatic transfer switch (ATS).
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.