20kW to 24kW Home Standby Generators
Designed primarily for residential use in medium to large homes, A 20kW Generator or 22kW generators designed for Home Backup can supply enough power to your home that you’ll barely notice an outage. Most homeowners purchase a standby generator bundled with an Automatic Transfer Switch (ATS) which is required for installation and operation.
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Generac Power Systems
Generac Standby Generators offer quiet operation, 18-inch-to-house installation, an engine designed specifically for use in a standby generator, True Power™ Technology, and Generac's Mobile Link remote monitoring system. Coupled with the right Automatic Transfer Switch (ATS), these generators can power 4 Central A/C units and up to 8 additional 240-volt loads for managed-whole-house power.
The Generac 24kW and 22kW Guardian Generators are the most powerful air cooled generators on the market and offer the lowest price per kilowatt than any competing 20kW model in their class. They boast up to 10 percent better fuel efficiency than comparable 20kW generators.
Best: The 24kW Guardian is the most powerful air-cooled generator on the market. Generac rates this generator for 24kW on LP and 21kW on Natural Gas, another industry first. Suitable for both residential and small business applications.
Generac Guardian 24kW 7210 Includes a 200-Amp, Service-Entrance-Rated ATS.
Generac Guardian 24kW 7209 Generator only option.
Better: The 22-Kilowatt 7043 and 7042 Generac Guardian is rated at 22kW on LP Propane and 19.5kW on Natural Gas. Suitable for Residential and Small Business Applications.
Generac Guardian 22kW 70432 Includes 200-Amp SE-Rated Whole House ATS
Generac Guardian 22kW 70422 Generator only option.
Kohler Generators
Look to Kohler standby generators for extraordinary reliability, powerful performance, a fast response time, and quiet operation. The RXT 200-Amp Automatic Transfer Switch is Service Entrance Rated and can manage two central air conditioners and up to four more high voltage loads with the addition of a Kohler Load Shed Kit. Use the On Cue Plus Wireless Remote Monitoring System for on-the-go access to generator status and alerts.
Best: Kohler offers two 20-kilowatt generator + ATS bundles to meet your needs.
Kohler 20kW 20RESAL-200SELS Includes 200-Amp SE-Rated ATS.
Kohler 20kW 20RESCL-100LC16 Includes 100-Amp, 16-space ATS Load Center.
Better: Buy just the Kohler 20-kilowatt generator. ATS not included.
Kohler 20kW 20RESC ATS sold separately.
Briggs & Stratton
Standby Generators from Briggs & Stratton feature world-renowned commercial Vanguard Engines, an unmatched 5-5-5 warranty on parts, labor, and travel, along with 18-inch-to-house installation, and Symphony II Power Management. Add an InfoHub Wireless Monitor and access generator system status from any internet connected computer, tablet, or smartphone.
Best: Standby generator and ATS Bundles
Briggs and Stratton 20kW Generator 40645 Aluminum Enclosure with 100-Amp Whole-House ATS.
Briggs and Stratton 20kW Generator 40636 Aluminum Enclosure with 150-Amp Whole-House ATS
Briggs and Stratton 20kW Generator 40638 Aluminum Enclosure with 400-Amp Dual 200-Amp Whole-House ATS
Briggs and Stratton 20kW Generator 40621 Includes 200-Amp Whole House ATS
Briggs and Stratton 20kW Generator 40584 Includes 200-Amp SE rated ATS.
Briggs and Stratton 20kW Generator 40625 Includes 150-Amp SE rated ATS
Briggs and Stratton 20kW Generator 40622 Includes 100-Amp SE rated ATS.
Briggs and Stratton 20kW Generator 40623 Includes Dual 200-Amp Split 400-Amp SE rated ATS
Replacement: Standby generator only.
Briggs and Stratton 20kW Generator 40588 Aluminum Enclosure ATS Sold Separately
Briggs and Stratton 20kW Generator 40586 ATS sold separately.
Cummins Power Generation
From the world leader in diesel engine design and manufacturing, Cummins Power Generation Quiet Connect Standby Generators stand out with very quiet 65dB operation, intelligent load management, and Built-In Remote Monitoring and Access
Cummins 20kW Quiet Connect RS20AC – 20kW Standby Generator with 200-Amp SE-Rated ATS
Cummins 20kW Quiet Connect RS20 – 20kW Standby Generator. ATS sold seperately
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Updated November 7, 2018