Kohler standby generators in Colorado

Kohler, now sold under the Rehlko company, is the main alternative to Generac at Colorado dealers. Its spec sheets use a steeper altitude derate than most (4% per 1,000 feet above 500 feet), and its liquid-cooled models are the ones Kohler pitches for higher elevations.

Headquarters

Kohler, Wisconsin, USA

Where it’s made

KOHLER residential standby generators, including their engines, are 'designed, engineered, and assembled in the USA', with some select components from global suppliers.

Warranty

5-year limited, with 7- and 10-year upgrades

Altitude

4% less output per 1,000 ft above 500 ft

Cold weather

Cold weather kit recommended below 32°F

Colorado installers

5 of 83 in our October 2026 survey list Kohler

Models for home backup

RCA / RCAL air-cooled (e.g. 14RCA/14RCAL, 20RCA/20RCAL, 26RCA/26RCAL; the 'L' suffix includes an ATS)

24RCLA liquid-cooled (also 30RCLA in lineup)

Warranty

Current product pages: 'Premium five-year limited warranty' with 5-year parts coverage, dealer travel up to 200 miles for service, and extended warranty available through a dealer. The 26RCA spec sheet (G4-315, rev. 4/23) describes it as a 5-year/2,000-hour limited standby warranty covering parts, labor and travel, with optional 7-year or 10-year upgrades.

Altitude

26RCA/26RCAL spec sheet: 'Derate 4% per 305 m (1000 ft.) elevation above 153 m (500 ft.)'; also 2% per 10°F above 60°F. Kohler markets its liquid-cooled models as better suited to higher altitudes.

Cold weather

The optional 120 VAC cold weather kit (fuel regulator, oil and breather tube heaters) is recommended below 32°F (0°C). An optional battery heater is recommended below 0°F (-17°C). Do not use a carburetor heater with the cold weather kit. Product pages also recommend cold-weather accessories below 32°F.

Monitoring and the app

Current pages list a remote monitor as included, used with the Kohler Energy Management App. The 2023 spec sheet lists OnCue Plus, with an Ethernet connector on the RDC2 controller. That suggests it relies on the home's internet connection, so off-grid reporting requires the router and modem to be on backup power. The connection method of the newer remote monitor is not published on the pages reviewed.

Recalls

We found no U.S. Consumer Product Safety Commission recalls of this brand’s home-backup products since 2021, as of October 2026.

What a Colorado homeowner should know

• Kohler's own spec sheet uses a steeper altitude derate (4%/1,000 ft above 500 ft) than some competitors publish (3.5%/1,000 ft). At Denver elevation, expect roughly 19% less than the rated kW.
• Brand ownership changed: the home-generator business is now part of Rehlko (Platinum Equity majority-owned), but products still carry the KOHLER name.
• Sold and serviced through dealers. Warranty includes dealer travel up to 200 miles.

Reviewed October 29, 2026 from manufacturer documents and CPSC records. Specs and terms change; confirm with the manufacturer or your installer. Colorado Peak Power is independent of Kohler.

Sources

• kohlerhomeenergy.rehlko.com /products/home-generators/26rcal
• biztimes.com /kohler-energy-rebrands-as-rehlko-after-becoming-standalone-company/
• kohlerhomeenergy.rehlko.com /products/home-generators/14rca
• apelectric.com /content/PDF/Kohler/26rca_spec_sheet.pdf
• kohlerhomeenergy.rehlko.com /products/home-generators/24rcla
• cpsc.gov /th/node/38558