Generac Air-Cooled Generators & Guardian Series Installation in Minnesota, Wisconsin, Iowa and North Dakota
Midwest, a Generac Prestige dealer, installs the full Guardian range, 10 to 28kW, on your natural gas or propane, and every new Guardian carries the 12-Year Power Plus Warranty.
Air-Cooled
Why Choose Air-Cooled Backup Power?
The air-cooled Guardian Series is Generac’s home standby line, from 10kW to 28kW. It sits outside on a pad, starts on its own the moment the power goes out, and keeps the house warm through a winter outage. Larger homes and longer outages call for liquid-cooled Generac models.
From Essentials to the Whole House
A smaller unit keeps the furnace, refrigerator, well pump and lights going. A larger one, or a mid-size unit with load management, runs the whole house.
Built for Upper Midwest Winters
Guardian units from 10kW to 26kW share one 48 by 25 by 29 inch enclosure, and a cold-weather kit keeps the battery and oil from freezing so it starts on the coldest night.
Neighbor-Friendly and Hands-Free
The weekly exercise runs at low speed in Quiet-Test mode, about 55 to 57 dB(A), and the unit draws on natural gas or propane, so nobody refuels it in a storm.
Models
Popular Air-Cooled Generac Models (Guardian Series)
Midwest sells and installs every Guardian size, and our Master Electricians match yours to the loads you want running at a free estimate.
10kW Guardian Generator
Essential circuits
Carries what a household needs through an outage: the furnace blower, the refrigerator, the well pump and the lights.
14kW Guardian Generator
Essential circuits
More headroom for the essentials, a good match for a cabin, a smaller home or a condo.
18kW Guardian Generator
Essential circuits to whole house
Starts a five ton central air unit, and backs up the whole house when we add a load management switch.
22kW Guardian Generator
Whole house, most homes
Rated 22kW on propane and 21kW on natural gas: whole-house backup for most homes up to about 3,000 square feet.
View Details →24kW Guardian Generator
Larger homes
More output in the same enclosure, for homes of roughly 3,000 to 4,500 square feet with two heating or cooling zones.
26kW Guardian Generator
Larger homes
Whole-house power for bigger homes running several HVAC zones, a shop or a detached garage.
28kW Generac Generator
Largest air-cooled
The biggest unit in Generac's air-cooled home line, rated 28kW on propane and 25kW on natural gas.
Installation
Precision Installation for Every Guardian Series Generator
For more than 20 years and over 20,000 generators, one Midwest team has handled every stage itself, from the permit to the final inspection. See our generator installation process.
Free Estimate & Sizing
Start with a free consultation or a home visit. A Master Electrician reviews your panel and loads, picks the Guardian size and places the unit.
Permits & Inspections
Midwest pulls the permit with a licensed electrician and schedules the inspections. Most projects take 2 to 4 weeks from the first consultation to the final hookup.
Our Own Licensed Team
Midwest's own Master Electricians and factory-trained technicians do the work, never subcontractors, and most installations are completed in a single day.
Reviews
Trusted for Air-Cooled Generac Installations, Reviewed by Customers
Thousands of 5-star reviews from Midwest customers.

Exclusive Power Plus Warranty: 12 Years of Full Coverage
Twelve years of coverage on Generac air-cooled units, with labor, travel, parts and major components included at no extra cost. The Power Plus Warranty is exclusive to Canter Power Systems brands.
Financing through Synchrony Bank, subject to credit approval. See financing options.
See the WarrantyCoverage
Air-Cooled Generac Installation Across Four States
Always Free Estimates & Proposals
Ready to Find Your Air-Cooled Generator? Request Your Free Estimate
A Midwest Master Electrician sizes your home and sends a free proposal with no obligation. Call Sales at (855) 374-7674 or schedule online.