Affordable, commercial-grade power for basic power needs. When a bad storm or utility failure knocks out your power, the 12RES KOHLER® generator keeps your lights on, fridge cold and sump pump working. This generator will power most appliances in smaller homes, or a few critical items in larger homes.*
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Reliable.Inside this generator is a commercial-grade engine built to withstand extreme workloads year after year.
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Powerful.In just 10 seconds, your KOHLER generator automatically restores power to your heat or AC as well as appliances and electronics.*
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Premium warranty.We’ve got you covered with 5-year, 2,000-hour protection and a steel enclosure that’s built to last.
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Flexible.Fits both standby and off-grid applications for the ultimate versatility while saving the battery with hibernating controller capability
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Money Saver.No pricey concrete pad needed. Your contractor – and your wallet – will appreciate the built-in mounting pad and easy-to-connect terminal block.
The Power You Need
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PowerBoost™ technology provides the power to start large loads without dropping power to other appliances
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Extraordinary peak motor-starting capacity to start and run a typical 4 ton air conditioner while still running other home appliances and electronics
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Premium power quality delivers exceptional digital voltage and frequency regulation along with low levels of harmonic distortion to protect sophisticated electronics
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Powered by reliable KOHLER Command PRO® engine, designed and tested for tough commercial applications; with hydraulic valve lifters to eliminate need for lengthy break-in periods and expensive valve adjustments; operation speed is 3600 rpm (the standard for air-cooled generators)
The Conveniences You Expect
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ADC-RES Advanced Digital Control designed for today’s sophisticated electronics
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Quiet, neighborhood-friendly operation with sound levels similar to a typical central air conditioner
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Steel enclosure with automotive-grade paint for advanced corrosion protection
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Runs on either natural gas or liquid propane (LPG) with simple switching between natural gas and LPG in the field
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Streamlined installation, including built-in base that eliminates need for concrete mounting pad and simple terminal block for easy field connections
| Rated kW LP | 12 kW |
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| 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 |
| Warranty | Premium five-year limited warranty |
| Country of Origin | US |
| Certifications/Listings | UL 2200|CARB|EPA |
| Automatic Transfer Switch Included | No |
| Remote Monitoring Available | No |
| Off Grid / Utility Backup | Utility Backup|Off Grid |
| 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 |
| Engine/Alternator RPM | 3600 |
| Fuel Type | Natural Gas|LP |
| Frequency | 60 Hz|50 Hz |
| Phase | Single Phase |
| Voltage @ 60 Hz | 120/240 |
| Digital Voltage Regulation | ±1.5% |
| Built in Mounting Pad | Yes |
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