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.
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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.
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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%
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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