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Kohler 12KW RESV Standby Generator

The hard-working 12 kW KOHLER® generator keeps your appliances working, the heat or AC running and your security system on
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Product Details

12kW Generator

Our generators for backup power provide reliability and performance. When you lose power during an outage or storm, a hard-working 12 kW KOHLER® generator keeps your appliances working, the heat or AC running and your security system on.* OnCue® Plus Generator Management System is standard with every RESV or RESVL generator.

* High Quality Power.

Kohler generators provide advanced voltage and frequency regulation along with ultra-low levels of harmonic distortion for excellent generator power quality to protect your valuable electronics.

* Powerful.

The Kohler 12 kW generator can easily start and run a 5 ton air conditioner with up to 5 kW preload.*

* Reliable.

Kohler is known for extraordinary reliability and performance and backs that up with a 5-year or 2000 hour limited warranty.

* Enclosure

Bold new Kohler design in steel, dipped in e-coat for extra corrosion protection and painted with a durable powder coat finish.


PowerBoost™ technology provides power to start large loads such as central air conditioners without dropping power to other appliances Extraordinary peak motor-starting capacity: 12RESV at 16.8kVA at 240V Premium power quality delivers exceptional digital voltage and frequency regulation along with low levels of harmonic distortion to protect sophisticated electronics Powered by reliable KOHLER Series 7000 V-twin engine with efficient OHV design. operation speed is 3600 rpm (the standard for air-cooled generators) Compatible with Programmable Interface Module (PIM) and RXT, RDT and RSB Automatic Transfer Switches Also compatible with Load Control Module (LCM) or Load Shed kit with single-phase generators only


RDC2 controller designed for today's sophisticated electronics manages both the generator set and Model RXT transfer switch functions Accepts natural gas fuel pressure as low as 3.5 inches Quiet, neighborhood-friendly operation with sound levels similar to a typical central air conditioner Meets 181 mph wind rating Runs on either natural gas or liquid propane (LPG) with simple switching between natural gas and LPG in the field


Phase Single Phase
Fuel Type LPG|Natural Gas
Off Grid / Utility Backup Utility Backup
Enclosure Material Steel
Peak Motor Starting kVA @240 V 20.3 kVa
Voltage @ 60 Hz 120/240
Displacement 725 cm³ (44 cu. in.)
Horsepower NG 18 HP, LP 21.4 HP
Built in Mounting Pad Yes
Sound Output During Weekly Exercise 67 dB(A)
Sound Output During Full-speed Operation 71 dB(A)
Warranty Premium five-year limited warranty
Dimensions 777 mm x 712 mm x 824 mm (30.6 in. x 28 in. x 32.4 in.)
Weight 392 lbs. (178 kg)
Country of Origin US
Certifications/Listings EPA|CSA|UL 2200|cUL
Automatic Transfer Switch Included Sold Separately
Remote Monitoring Available Included
Fuel Consumption on LP at 50% load? 57 cfh
Fuel Consumption on NG at 50% load? 128 cfh
Alternator Note All information shown is for 1 Phase 60 Hz generator with the largest alternator option available.
Alternator Type 2-Pole, Rotating Field
Controller RDC2 Controller
Cylinder Arrangement V-2
Engine Manufacturer/Description KOHLER
Engine Model KT725 1.9L, 4-Cycle
Frequency 60 Hz
Digital Voltage Regulation ±1.0%
Name 12RESV with OnCue Plus
Off Grid Warranty N/A


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