Generac 22kW Guardian Generator Installation & Pricing in Florida, Tennessee, Kentucky and Mississippi
One of the most powerful air-cooled generators on the market, installed by the GenerX team of a Generac Prestige dealer.
Model Overview
The Generac 22kW Guardian, Model G0070420
The Guardian Series 22kW automatic home standby generator can provide whole-house backup power for many homes, most often homes under 3,000 square feet with one central air conditioner. It runs on your home's natural gas or propane and starts on its own within seconds of an outage.
Specifications
22kW Guardian Technical Specifications
From Generac's product page and spec sheet for model G0070420, October 2026.
| Output, propane | 22kW |
|---|---|
| Output, natural gas | 21kW |
| Fuel | Liquid propane or natural gas |
| Engine | Generac G-Force 1000, 999cc, 2 cylinders |
| Voltage and phase | 240 volts, single phase, 60 Hz |
| Main line circuit breaker | 100 amp |
| Sound at normal load | 67 dB(A) at 23 ft |
| Sound in Quiet-Test mode | 57 dB(A) at 23 ft |
| Dimensions (L x W x H) | 48 x 25 x 29 in |
| Weight | 466 lb |
| Fuel use at full load | 327 cu ft/hr natural gas; 3.71 gal/hr propane |
| Controller | Evolution |
| Enclosure | Aluminum |
| Manufacturer warranty | Generac 5-year limited warranty |
Pricing
What Does a 22kW Guardian Cost Installed?
18 to 22 kW · Average Home
$10,000 to $14,000
Installed
Most homes under 3,000 sq ft with one central AC. Prices include equipment, in-house installation, transfer switch, permit fees, and our 12-year warranty on every Generac air-cooled unit we install. Your exact price comes with your free estimate.
Installation
Turnkey 22kW Guardian Installation by GenerX
Sizing & Placement
A GenerX Field Engineer reviews your electrical system, assesses your load requirements and finds the right placement for the generator.
Permits, Utility & Inspection
GenerX pulls the permits with a licensed electrician, connects your fuel supply, schedules the inspections and confirms the approvals.
Never Subcontracted
Every installation is completed by our in house team of licensed electricians, gas technicians and installation specialists. Once on site, most installations are completed in one day.
Financing
Flexible Financing Options
0%* Financing Options
Financing through Synchrony Bank, subject to credit approval. See financing options.
Payments as Low as $150/mo*
Spread the cost of your 22kW Guardian and its installation into monthly payments.
12 Years of Full Coverage
The Power Plus Warranty covers Generac air-cooled units for twelve years, with labor, travel, parts and major components included. See the warranty.
Resources
Generac 22kW Guardian Resources
Generac's documents for model G0070420, downloaded from generac.com in October 2026.
Reviews
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2,500+ Google reviews from GenerX customers.
Accessories
Add-Ons for Your 22kW Guardian
Generac Mobile Link
Included with the 22kW Guardian. See your generator's operating status and maintenance alerts from your smartphone, tablet or computer.
Generator Remote Monitoring →Apache Lightning Arrester
Surge protection that mounts to the back of your generator, with a lifetime warranty that includes labor and trip fees. $399 including installation.
Always Free Estimates & Proposals
Call 877-776-0378 for Your Free, No-Obligation Generator Estimate Today
A GenerX Field Engineer confirms the 22kW is the right size for your home and gives you a no cost, no obligation proposal.