Name Brand 20-Kilowatt Home Standby Generators

House Below a Stormy Sky with Upstairs and Downstairs Lights.

Standby home generators capable of producing a constant 20 kilowatts of electrical power are among the most popular generators available for home use. Installed in combination with the correct automatic transfer switch, they can supply enough power for homes that use two central air conditioners and still keep other essential appliances running.

Central air conditioners are one of the highest loads found in most homes and their motors draw three to six times more current during startup than when they are running. A generator must be able to supply the startup current for a brief moment and the running current continuously. Norwall PowerSystems offers 20kW standby generators from four companies. They bundle generators in a variety of packages to meet the needs of most homes and keep their critical and essential appliances running during a power outage.

Generac Power Systems

20kW Generac 70391 Guardian Standby Generator

20-Kilowatt Generac Guardian 70391 with 200-Amp Whole House Automatic Transfer Switch

Generac Guardian Series generators use their overhead valve industrial v-twin engine which was designed specifically for use in a generator. The 36 horsepower, 999cc engine runs on LP gas to produce 20kW of power, or on natural gas to produce 18kW of power. The choice of two fuels and conversion in the field makes this generator a versatile machine suitable in most locations as a backup for utility power. The generator’s functions are handled automatically by the Evolution Controller in conjunction with the automatic transfer switch. This 22-kilowatt generator will easily start and run 5-ton central air conditioning units along with other appliances.

Briggs & Stratton

Briggs and Stratton 20kW 40584 Standby Generator

20-Kilowatt Briggs and Stratton Home Backup Generator and Whole House ATS

Briggs & Stratton utilizes their well known Vanguard engines for consistent and reliable operation in home standby generators. The Briggs & Stratton 18/20kW generators use commercial-grade 993cc v-twin Vanguard engines designed to meet stringent home generator specifications and are set and tuned at the factory to operate on either natural or LP gas for maximum fuel efficiency and consistent operation. Used with a Briggs & Stratton automatic transfer switch, the generator automatically supplies your home with power during and outage and can start and run central air conditioning units rated up to 5 tons along with other essential and convenience appliances.

Kohler Power Systems

20RESAL 20kW Standby Generator by Kohler Power Systems

Kohler Power Systems 20kW Standby Generator 20RESAL

Standby generators from Kohler Power Systems run on either LP or Natural gas and use Kohler Command Pro engines to generate electrical power. The v-twin, 999cc engines run at a consistent 3600 rpm, even while starting large, heavy loads such as pumps and air conditioning units. The 18/20kW generators have one of the highest reserve power ratings of all standby home generators in their class, briefly supplying up to 35 kilowatts of power for starting large motors. Combined with a Kohler automatic transfer switch, Kohler 18/20kW generators keep your home safe and comfortable during a power outage.

Cummins Onan

Cummins Home Standby 20kW with 200A ATS

Cummins Power Generation RS20AC Home Standby Generator Package with 200-Amp SE-Rated ATS

Cummins Onan standby generators offer the comfort and security of a home generator built by a company well known for reliable and powerful engines. The 993cc v-twin overhead valve engine used in 18/20kW generators was designed by Cummins Onan and runs on either LP or natural gas. Unlike many other standby home generators, this unit turns loads on and off as needed in order to supply power where it is needed, when it is needed, without overloading the generator. The generators are shipped set up for natural gas and are converted in the field for LP gas installations. In addition to other loads, the Cummins Onan 18/20kW generators supply enough power for air conditioners and other critical loads.

Post Updated Aug 3, 2018