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The KOHLER 12RESV provides permanently installed standby power for your home. Connected to a suitable natural gas or LP fuel supply and a compatible automatic transfer switch, it starts when utility power fails and supports the circuits selected for backup.

Key features

  • Automatic backup: Designed to work with a compatible automatic transfer switch for unattended outage response.
  • Fuel flexibility: Natural gas or LP operation using a permanent fuel connection.
  • Engine design: Air-cooled KOHLER engine in a protective outdoor enclosure.
  • Generator control: RDC2 controller coordinates generator operation and compatible RXT transfer-switch functions.
  • Service access: Oil drain extension with shutoff valve simplifies routine oil service.
  • Outdoor enclosure: Steel enclosure with a protective finish.

Specifications

Manufacturer KOHLER
Model 12RESV
Power class 12 kW
Fuel Natural gas / LP
Cooling Air-Cooled
Rated output — natural gas 11 kW
Rated output — LP 12 kW
Frequency 60 Hz
Controller RDC2 Controller
Engine displacement 725 cm³ (44 cu. in.)
Engine speed 3600 rpm
Electrical configuration 12RESV, Single-phase, 240V, UL/cUL
Line circuit breaker 60 A
Generator dimensions 30.6 in. x 28 in. x 32.4 in. (777 mm x 712 mm x 824 mm)

Manufacturer SKU: 12RESV-QS8

Included equipment

Generator in the selected enclosure and configuration. Automatic transfer switch sold separately.

Installation and sizing

Match voltage, phase, fuel supply, and connected loads to the selected configuration. Output depends on fuel and operating conditions. Installation, fuel-system work, and transfer-switch connections require a qualified installer.

View KOHLER model information and manuals

ManufacturerKOHLER
Model Number12RESV-QS8
Standby Rating11 kW NG / 12 kW LPG
Rated Current45.8 A NG / 50 A LPG
Line Circuit Breaker60 A
Fuel Consumption 100% LoadNG 216 cfh, LPG 103 cfh
Shipping Weight433 lb (196 kg)
FuelNatural gas or LPG (field-convertible)
Voltage120/240 V, single-phase, 60 Hz
EngineKOHLER KT725, 725 cc V-2 air-cooled, 3600 rpm
ControllerRDC2 with OnCue Plus
EnclosureSteel, powder coat, 181 mph wind rating
Sound Level67 dB(A) exercise, 71 dB(A) full speed at 7 m
Fuel Inlet1/2 in NPT
CertificationscUL/UL 2200, EPA
Dimensions (L x W x H)30.6 x 28 x 32.4 in (777 x 712 x 824 mm)
Warranty5-year/2000-hour Premium limited

Specifications are from the manufacturer and may change. Questions? Call (888) 831-0450.

KOHLER 5-Year / 2000-Hour Premium Limited Warranty

Coverageparts, labor and travel for 5 years or 2000 hours, whichever occurs first
Usestationary standby backup to a utility source in the US; mobile or non-standby use voids the warranty
Registrationstartup by a KOHLER distributor/dealer registered via Kohler Power Assistant, else term runs from purchase date
Optional7-year and 10-year extended limited warranties available
How to claimcall 1-800-544-2444 or email Resi-warranty@kohler.com

Manufacturer warranties are provided by the manufacturer. Keep your invoice as proof of purchase. Questions about a warranty claim? Call (888) 831-0450.

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