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Guardian 18 kW – Full House

Model 7228 Manufacturer

NEW IN 2021! One of the most powerful air-cooled generators on the market today, the Guardian Series 18 kW automatic home standby generator can provide whole-house backup power for many homes.


Mobile Link™ Remote Monitoring FREE with every Guardian Series Home Standby Generator

Allows you to monitor the status of your generator from anywhere in the world using a smartphone, tablet, or PC. Easily access information, such as the current operating status and maintenance alerts. With Mobile Link, you are taken care of before the next power outage.

Automatic Operation

Don’t worry about having to be there to start and turn off your Generac home backup generator because it does that automatically–whether you’re home or away.

Refueling Not Necessary

Your Generac home backup generator runs on your existing natural gas or LP fuel supply. Save the gas cans for your other outdoor power equipment.

The #1 Selling Brand of Home Backup Generators

Generac created the home backup generator category. Today, our generators are preferred by most homeowners who invest in home backup power.

Power Directly to Your Home

You’ll never have to run an extension cord through a window or door again. Your Generac home backup generator safely delivers power right to your home’s electrical panel.

Get a Quote

Get Financing

Flexible financing available through Synchrony


Model Number 7228
Manufacturer Generac Power Systems
Made In USA Yes
Rated Watts 18kW LP Propane / 17kW Natural Gas
Rated Amps 75 Amps LP Propane / 70.8 Natural Gas
Voltage 120/240-Volts Single Phase
AC Ton Rating 5-Ton
Enclosure Aluminum
UL Listed UL-2200
Decibel Rating 7m 65 dBA Normal Load / 55 dBA Quiet Test Mode
Type Standby Generator
Series Name Guardian Series
Starting System Automatic
Low Oil Alert Low Oil Shutdown
Mainline Breaker 80 Amps
Battery Requirements 12-Volt Group 26R 540 CCA or 12-Volt Group 35R 650 CCA
Mounting Pad Composite Base Attached
Weight 420 lbs
Dimensions 48L x 25W x 29H
Engine Brand Generac G-Force
Engine Size 816cc
Engine RPM 3600
Cast Iron Sleeve Spiny-Lok Cast-Iron Cylinder Walls
Cooling System Air Cooled
Alternator Type Revolving Field
Frequency 60 Hz
Auto Voltage Regulation Yes
Type n/a
Gauge No
NG Power Capacity 17kW
LP Power Capacity 18kW
NG Consumption Full Load 247 Cubic Feet per Hour
NG Consumption Half Load 169 Cubic Feet per Hour
LP Consumption Full Load 3.0 Gallons per Hour
LP Consumption Half Load 1.7 Gallons per Hour
Transfer Switch
Model RXSW200A3
Switch Amps 200 Amps
Switch Circuits Whole House Transfer Switch
ATS Poles 2
Switch Weight 39 lbs
Warranty Information
Consumer Warranty Generac 5-Year Limited Consumer Warranty
Shipping Information
Shipping Dimensions 29H X 25W X 48D
Shipping Weight 420 lbs



Sell Sheet

Owner’s Manual

5 Year Limited Warranty

5 Year Extended Warranty

7 Year Extended Warranty

10 Year Extended Warranty


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