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Cummins standby generators in Colorado

Cummins has the most explicit cold-climate ratings of the home standby brands: standard models run to 0°F and its Extreme Cold models to -40°F. Its RS13A holds its full rating up to 6,900 feet, which is unusual and directly useful at Colorado elevations.

Headquarters
Columbus, Indiana, USA (Cummins Inc.); the spec sheets list Cummins North America in Minneapolis, MN
Where it’s made
Cummins states its home generators are 'engineered, tested and manufactured in the USA'.
Warranty
5 years or 2,000 hours; up to 10 years through a dealer
Altitude
About 3.5% less per 1,000 ft; RS13A rated at 6,900 ft
Cold weather
Standard to 0°F; Extreme Cold models to -40°F
Colorado installers
3 of 83 in our October 2026 survey list Cummins

Models for home backup

QuietConnect RS13A / RS17A / RS20A / RS20AC (air-cooled)

Natural gas outputSpec sheet gives amps, not kW: RS13A 54.2 A, RS17A 70.8 A, RS20A/RS20AC 75 A at 120/240 V. That is about 13 / 17 / 18 kW
Propane outputRS13A 54.2 A, RS17A 70.8 A, RS20A/RS20AC 83.3 A, about 13 / 17 / 20 kW
FuelNatural gas or LP vapor
Transfer switchATS sold separately (service-entrance and non-SE options), except the RS20AC, which is packaged with a 200 A service-entrance-rated ATS. An integrated ATS/load panel is an available accessory.
NotesSpec sheet NAS-6254-EN rev. 10/19 (the most recent manufacturer spec sheet found)

QuietConnect Extreme Cold Weather models RS13AE / RS17AE / RS20AE / RS20ACE

Natural gas outputSame ratings as the standard models
Propane outputSame ratings as the standard models
FuelNatural gas or LP vapor
Cold ratingOperate down to -40°F (-40°C)

Warranty

Base warranty 5 years or 2,000 hours on RS air-cooled models. Automatic transfer switches carry a 2-year warranty. Extended options go up to 10 years of full coverage through an authorized dealer. The current site says the base warranty has 'fewer exclusions than other brands' but does not publish full terms.

Altitude

RS spec sheet: derate 3.5% per 1,000 ft (300 m), plus 1% per 10°F. Full rating applies at 60°F/0 ft for the RS20A/RS20AC, 77°F/1,000 ft for the RS17A, and 77°F at 6,900 ft (2,100 m) for the RS13A.

Cold weather

Standard models run down to 0°F (-18°C) without modification. 'E' Extreme Cold models run down to -40°F (-40°C). Standard units can add an Extreme Cold Weather Kit (A054B984) for climates below 0°F. The published operating range is 122°F (50°C) to -40°F (-40°C).

Monitoring and the app

Remote monitoring is built into every RS generator and can be accessed from a computer, tablet or smartphone (check status, change exercise schedule, manual start). An optional in-home display (A053K028) is available. The network connection method (Wi-Fi/Ethernet vs cellular), and therefore off-grid behavior, is not published in the sources 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

Cummins is sold and installed through certified installers. Tell us what you need and we’ll connect you with one who installs it in your area.

Get an install quoteSize my backup

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 Cummins.

Sources

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