12 kW Generator

Model 12RES | Fuel Type Natural Gas & LPG

A standby home generator that delivers affordable, commercial-grade performance to keep your home protected. Perfect for smaller homes or critical circuits in larger ones. Equipped with a composite enclosure for harsher climates where corrosion is a concern. 

  • Our generators feature commercial-grade engines tested for 2,000 hours of continuous operation and extreme conditions. Their enclosures are designed to endure winds up to 181 MPH, ensuring resilience and durability.

  • Rated kW LP: 12 kW

    Rated kW NG: 10.4 kW

    Amps LP: 50 amps

    Amps NG: 43 amps

    Peak Motor Starting kVA @240 V: 32 kVa

    Alternator Note: All information shown is for 1 Phase 60 Hz generator with the largest alternator option available.

    Displacement: 0.725 L (44 cu. in.)

    Horsepower: NG 20.5 HP, LP 23.6 HP

    Enclosure Material: Steel

    Sound Output During Weekly Exercise: 65 dB(A)

    Sound output During Full-speed Operation: 65 dB(A)

    Response Time: 10 seconds

    Country of Origin: US

    Automatic Transfer Switch Included: Included

    Off Grid / Utility backup: Off GridUtility Backup

    Weight: 400 lbs. (182 kg)

    Alternator Type: 2-Pole, Rotating Field

    Fuel Consumption on NG at 50% Load: 124 cfh

    Fuel Consumption on LP at 50% Load: 60 cfh

    Controller: ADC-RES Controller

    Cylinder Arrangement: V-2

    Dimensions: 1123 mm x 726 mm x 804 mm (44.2 in. x 28.6 in. x 31.6 in.)

    Engine Manufacturer/Description: KOHLER

    Engine Model: CH740

    Engin/Alternator RPM: 3600

    Fuel Type: Natural Gas | LPG

    Frequency: 50 Hz | 60 Hz

    Phase: Single Phase

    Voltage @60 Hzs: 120/240

    Digital Voltage Regulation: ±1.5%

    Built in Mounting pad: Yes

Crafted for Excellence

Our generators offer a superior experience from day one and for years to come. Our durable design ensures your generator lasts longer, operates more quietly, and starts more efficiently under higher loads than competing models.

Real stories from real owners

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Butler Support: (717) 938-4253

Hours: Monday – Friday, 8:00am to 4:30pm