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20kW Generator

Starting at $4,754.00 MSRP*

*Starting price in US dollars. Does not include installation or accessories or costs to export outside the US.

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Popular generators for backup power, with an automatic transfer switch included. When you lose power during an outage or storm, a hard-working 20 kW KOHLER� generator keeps your appliances working, the heat or AC running and your security system on.*

  • Reliable.

    Every KOHLER� generator is equipped with a heavy-duty, commercial-grade engine that stands up to extreme weather.

  • Powerful.

    In just 10 seconds, your KOHLER generator automatically restores power to a 5-ton (60,000 BTU) air condition, major appliances and electronics.*

  • Premium warranty.

    We've got you covered with 5-year, 2,000-hour protection, and a corrosion-proof enclosure that's built to last.

  • Award winner.

    KOHLER generators have received several awards, including the Most Valuable Product (MVP) Award 2010 by Building Products magazine.


    PowerBoost� technology provides power to start large loads such as central air conditioners without dropping power to other appliances

    Extraordinary peak motor-starting capacity: 14RESAL at 35kVA at 240V and 20RESAL at 40.5kVA 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


    Comes with either an RXT 100-amp indoor-rated automatic transfer switch with 16-circuit load center or an RXT 200-amp outdoor-rated service entrance rated automatic transfer switch with load shed kit

    DC2 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 degrees F

    Runs on either natural gas or liquid propane (LPG) with simple switching between natural gas and LPG in the field

Request a Consultation

Do you have a question or comment about KOHLER® generators or installation?
Contact us today.