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Champion 12.5-kW Home Standby Generator with 200-Amp Whole House Switch with Demand Control Model #100291 (discontinued - a new 200amp ATS model coming soon)

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SKU 100291

The Champion Power Equipment 100291 12.5-kW Home Standby Generator with an ATS200 Whole House Service Entry Rated Automatic Transfer Switch with Demand Control is The Simple Solution™ to a power outage. Enjoy peace of mind while ensuring security and convenience for your family during an emergency.

The generator starts automatically when the power goes out and returns to standby when power is restored. The 24-volt starting system operates in temperatures ranging from -22° F to 104° F with no warming kit necessary.

You’ll have the starting power you need during an emergency since the onboard battery charger maintains the charge at all times, plus, since the generator is connected to your propane or natural gas system, it never needs refueling. This unit also performs weekly self-diagnostic tests.

With our Whole House with Demand Control intelligent load management technology, your home’s power requirements are monitored continuously. This ATS can back up your home’s entire 200 Amp distribution panel with the ability to manage up to 8 high demand appliances for your Whole House power needs. Your home’s circuits are divided into prioritized zones – from vital to managed. If your generator nears maximum capacity, pre-designated, high demand appliances are managed to avoid overload. As soon as demand lowers, the generator will automatically reacquire the appliances that are managed. Appliances are managed and reacquired sequentially.

An all-weather, composite mounting pad is included for easy installation, plus the steel enclosure protects your generator from the elements. Our innovative gull-wing design provides easy access to the engine and control panel and allows a full view of the onboard control system.

The Champion 717cc OHV engine provides 12.5-kilowatts of continuous power on propane and 11-kilowatts on natural gas. This 12.5-kW-rated unit produces 52.1 amps at 240 volts on propane and 45.8 amps at 240 volts on natural gas.

The sound-dampening lining and low-tone muffler reduce noise through a unique baffle system and make this unit the quietest in its class. The residential-friendly 63 dBA has about the same noise level as 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, and the ATS200 is UL and cUL listed in the US and Canada. Buy with confidence - Champion Support and our nationwide network of service centers will back your purchase up with a 10-year limited warranty and FREE lifetime technical support.

What's Included:

  • Oil Drain Pan
  • Flexible Fuel Line
  • HSB Enclosure Keys
  • Battery Cables & Hardware
  • LPG Jets
  • Jet Change Tool


        Whole House 24/7 Power

        The ATS200 Whole House Transfer Switch with Demand Control provides seamless, managed power to your entire home during an outage


        Thanks to advanced sound dampening and a specially designed low-tone muffler, this generator operates at a residential-friendly 63 dBA noise level


        24-volt starting system operates in sub-zero or extreme heat (between -22° F and 104° F) with no warming kit necessary, plus the generator performs weekly self-diagnostic tests


        The 12.5-kilowatt generator provides 12,500 watts of continuous power on propane and 11,000 watts on natural gas, with no refueling, no manual operation and no extension cords needed

        Champion Support

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


          Propane Rated Watts 12500W
          Natural Gas Rated Watts 11000W
          Propane Rated Amps at 120V 104.2A
          Propane Rated Amps at 240V 52.1A
          Natural Gas Rated Amps at 120V 91.7A
          Natural Gas Rated Amps at 240V 45.8A
          Rated Volts 120/240
          Rated Frequency 60Hz
          Phase Single
          Propane Fuel Consumption at 1/2 Load 1.6  gal/h
          Propane Fuel Consumption at Full load 2.6 gal/h
          Natural Gas Fuel Consumption at 1/2 Load 122.2 ft3/h
          Natural Gas Fuel Consumption at Full Load 198.1 ft3/h
          Main Line Circuit Breaker 52.0A
          Starting System Automatic 24V
          Operational Volume 63.0 dBA
          Cooling System Air Cooled
          AC Ton Rating 4T
          Generator Enclosure Steel
          Generator Mounting Pad Composite
          Engine Brand Champion
          Engine Size 717cc
          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 1.5 qt.
          Engine Oil Included No
          Low Oil Shut-Off Yes
          UL Listing cULus
          EPA Certified Yes
          Switch Amps 200A
          Switch Volts 120/240
          Switch Type Whole House
          Switch Circuits Whole Service
          Switch Poles 2
          Load Management Yes
          Service Entry Rated Yes
          Switch Enclosure NEMA 3R


          Length 50.0 in.
          Width 30.1 in.
          Height 40.2 in.
          Weight 473.0 lb.


          Operator's Manual

          HSB Installation Manual (all models)

          Home Standby Fact Sheet

          Customer Reviews

          Based on 2 reviews
          Outstanding Performance
          Happy with my purchase

          Customer Reviews

          Based on 2 reviews
          Outstanding Performance
          Happy with my purchase