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Our most popular generators for backup power provide award-winning reliability and performance.

When you lose power during an outage or storm, a hard-working 14/20 kW KOHLER® generator keeps your appliances working, the heat or AC running and your security system on. Now also available in 3 phase.
Features
  • PowerBoost™ technology provides power to start large loads such as central air conditioners without dropping power to other appliances
  • Extraordinary peak motor-starting capacity: 14RESA at 35kVA 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 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)
  • Compatible with optional OnCue® Plus and OnCue® Plus Wireless Generator Management Systems, and Programmable Interface Module (PIM)
  • 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
  • Quiet, neighborhood-friendly operation with sound levels similar to a typical central air conditioner
  • Stylish corrosion-proof enclosure impact tested to -30°F
  • Runs on either natural gas or liquid propane (LPG) with simple switching between natural gas and LPG in the field
  • Streamlined installation, simple terminal block for easy field connections. Kohler also offers concrete mounting pads to lower installation costs and time.
  • Model 14RESA approved for off-grid applications with 18-month/1000-hour off-grid warranty

Specifications

Brand

Model

  • 14 RESA

Rated kW LP

  • 14 kW

Rated kW NG

  • 12 kW

Amps LP

  • 58 Amps

Amps NG

  • 50 Amps

Peak Motor Starting kVA at 240 V

  • 33 kVa

Alternator Note

  • All information shown is for 1-Phase 60 Hz generator with the largest alternator option available.

Displacement

  • 725 cm³ (44 in³)

Horsepower

  • NG 20.5 HP
  • LP 23.6 HP

Enclosure Material

  • Composite

Sound Output During Weekly Exercise

  • 63 dB(A)

Sound Output During Full-Speed Operation

  • 67 dB(A)

Response Time

  • 10 seconds

Warranty

  • Premium Five-Year Limited Warranty

Country of Origin

  • US

Certifications/Listings

  • cUL
  • EPA
  • CSA
  • UL 2200

Automatic Transfer Switch Included

  • Sold Separately

Remote Monitoring Available

  • Included

Off Grid/Utility Backup

  • Off Grid, Utility Backup

Weight

  • 420 lb (191 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

  • RDC2 Controller

Cylinder Arrangement

  • V-2

Dimensions

  • 1216 mm x 655 mm x 733 mm (48 in. x 26.2 in. x 29 in.)

Engine Manufacturer/Description

  • KOHLER

Engine Model

  • CH740

Engine/Alternator RPM

  • 3600

Fuel Type

  • Natural Gas
  • LPG

Frequency

  • 0=60 Hz
  • 1=50 Hz

Phase

  • Single-phase or three-phase

Voltage at 60 Hz

  • 120/240

Digital Voltage Regulation

  • ± 1.0 %

Built-In Mounting Pad

  • Yes

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