Skip to main content
Champion Power Equipment

Model #201378

22 kW Whole House Home Standby Generator and 150A Switch with aXis Technology

Champion’s 22 kW aXis Home Standby Generator System includes a 150-amp aXis automatic transfer switch. This fully automatic system manages your home’s loads while reducing costs and increasing efficiency. Designed with advanced sound dampening, never needs refueling, works in extreme temperatures, and has an industry leading 10-year limited warranty.





With less wiring and lower installation costs thanks to our Power Line Carrier technology, you’ll save time and money installing your new HSB, easily manage your high-demand appliances with aXis technology, plus advanced airflow design extends engine life

Quiet Operation

Thanks to advanced sound dampening and a specially designed low-tone muffler, this generator operates at a residential-friendly 67 dB[A] noise level and performs self-diagnostic tests


24-volt starting system operates in sub-zero temperatures down to -22 °F with aluminum-zinc coated steel for weatherproofing and oxidation-resistance

Champion Support

Includes 10-year limited warranty with FREE lifetime technical support from dedicated experts


The Champion Power Equipment 201378 Home Standby Generator System includes 22 kW aXis Home Standby Generator and 150A aXis ATS Whole House Automatic Transfer Switch. Equipped with aXis technology for reduced costs, increases efficiency, and peace of mind while ensuring security and convenience for your family during an emergency. Enjoy totally automatic, seamless power to your home during an outage.

Champion aXis 22 kW generator features aXis Controller™ with 4-inch color display and Power Line Carrier technology, which uses your home’s existing wiring so your generator can talk to the automatic transfer switch and other components without needing to run separate wires, saving you money and time on installation.

With aXis Wi-Fi Direct your installer can use a tablet or cell phone to program your generator meaning less hassle, faster setup, and lower cost.

Featuring a NEMA 3R Service Entry rated enclosure, this switch may be installed indoors or outdoors and is ETL listed to comply with UL standards for the US.

The Whole House automatic transfer switch backs up your home’s 150-amp distribution panel and has the ability to manage your high-demand appliances by using our aXis Load Management Modules model 100868 (sold separately). Featuring a NEMA 3R Service Entry rated enclosure, this switch may be installed indoors or outdoors and is ETL listed to comply with UL standards for the US.

The innovative advanced airflow design stands out from the competition and allows your HSB to operate at cooler temperatures which extends the life of your engine. Your HSB is up to 20% more fuel efficient than leading competitors with 3.6 gal/hr using propane and 270.2 ft3/hr using natural gas at rated load.

Be confident your HSB will hold up to any weather thanks to the aluminum-zinc coated steel enclosure, offering better structural rigidity with the oxidation resistance of an all-aluminum enclosure, plus the gullwing opening allows for easy service and maintenance access.

The 24V starting system operates in sub-zero temperatures down to -22 °F, never needs refueling operating on your home’s NG or LP fuel supply, starts automatically when the power goes out, and returns to standby when power is restored.

The 999cc V-Twin Champion engine provides 22-kilowatts of continuous power on propane and 19.8-kilowatts on natural gas. This 22 kW-rated unit produces 91.7 amps at 240 volts on propane and 82.5 amps at 240 volts on natural gas.

The residential-friendly 67 dB[A]* is a little louder than normal conversation.

The alternator produces less than 5% total harmonic distortion (THD) to ensure safe use with even the most sensitive electronics.

This generator is available for all 50 states. Buy with confidence - Champion Support will back your purchase with FREE lifetime technical support, a 10-year limited warranty on the generator and a 2-year limited warranty on the ATS.

*Measurement is approximate and for reference purposes only. Sound measured at 23 ft. (7 m) and does not account for your installation site.

What’s included

  • Battery Jumper Wire
  • Gas Inlet Flex Hose
  • Gas Inlet Hose
  • Keys for Door Lock
  • Master Mixer Assembly


Propane Rated Watts 22000W
Natural Gas Rated Watts 19800W
Propane Rated Amps at 120V 183.4A
Propane Rated Amps at 240V 91.7A
Natural Gas Rated Amps at 120V 165A
Natural Gas Rated Amps at 240V 82.5A
Rated Volts 120/240
Rated Frequency 60Hz
Phase Single
Propane Fuel Consumption at 1/2 Load 2  gal/h
Propane Fuel Consumption at Full load 3.6 gal/h
Natural Gas Fuel Consumption at 1/2 Load 173.4 ft3/h
Natural Gas Fuel Consumption at Full Load 270.2 ft3/h
Main Line Circuit Breaker 100A
Starting System Automatic 24V
Operational Volume 67 dBA
Cooling System Air Cooled
AC Ton Rating 5T
Generator Enclosure Aluminum-Zinc Coated Steel
Generator Mounting Pad Composite
Engine Brand Champion
Engine Size 999cc
Engine Type 4-stroke V-Twin
Engine Speed 3600
Fuel Type Propane (LPG), Natural Gas (NG)
Engine Oil Type Mobil 1 5W-30 Full Synthetic
Engine Oil Capacity 3 qt.
Engine Oil Included Yes
Low Oil Shut-Off Yes
ETL Listing cETLus
EPA Certified Yes
Switch Type Whole House
Switch Amps 150A
Switch Volts 120/240
Switch Circuits Whole Service
Switch Poles 2
Response Time Adjustable (0.5-30 sec.)
Load Management Yes
Service Entry Rated Yes
Switch Enclosure NEMA 3R


Length 54 in.
Width 30.3 in.
Height 43.9 in.
Weight 633.6 lb.