12 kW Generator

Model 12RESV | Fuel Type Natural Gas & LPG

A standby home generator and automatic transfer switch bundle that delivers affordable, commercial-grade performance to keep your home protected in one simple package. Equipped with an ATS, rest easy knowing you'll automatically power your essentials.

  • 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: 11 kW

    Amps LP: 50.0 amps

    Amps NG: 45.8 amps

    Peak Motor Starting kVA @240 V: 20.3 kVa

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

    Displacement: 725 cm³ (44 cu. in.)

    Horsepower: NG 18 HP, LP 21.4 HP

    Enclosure Material: Steel

    Sound Output During Weekly Exercise: 67 dB(A)

    Sound output During Full-speed Operation: 71 dB(A)

    Response Time: 10 seconds

    Warranty: Premium five-year limited warranty

    Country of Origin: US

    Automatic Transfer Switch Included: Sold Separately

    Remote Monitor Available: Included

    Off Grid / Utility backup: Utility Backup

    Weight: 433 lbs. (196 kg)

    Alternator Type: 2-Pole, Rotating Field

    Fuel Consumption on NG at 50% Load: 128 cfh

    Fuel Consumption on LP at 50% Load: 57 cfh

    Controller: RDC2 Controller

    Cylinder Arrangement: V-2

    Dimensions: 30.6 in. x 28 in. x 32.4 in. (777 mm x 712 mm x 824 mm)

    Engine Manufacturer/Description: KOHLER

    Engine Model: KT725 1.9L, 4-Cycle

    Engin/Alternator RPM: 3600

    Fuel Type: Natural Gas | LPG

    Frequency: 60 Hz

    Phase: Single Phase

    Voltage @60 Hzs: 120/240

    Digital Voltage Regulation: ±1.0%

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