Cummins Standby Generators Ranked

Last updated: November 1, 2026

3 Cummins standby generators ranked. Each one is scored and ranked against every brand in its size, so "#3 mid-size" means third of all mid-size standby generators here, not third among Cummins's own.

Cummins makes 3 current standby generators: 1 under 15 kw and 2 15 to 22 kw. Prices run from $5,384.39 for the Cummins Quiet Connect RS13A 13kW to $6,662.42 for the Cummins Quiet Connect RS20AC 20kW. Its best-rated model in each size: the Cummins Quiet Connect RS13A 13kW (#6 of 8 under 15 kw, rated 3.2) and the Cummins Quiet Connect RS20AC 20kW (#6 of 9 15 to 22 kw, rated 3.2).

Prices were last checked November 1, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.

Cummins standby generators 3

  1. Cummins Quiet Connect RS20AC 20kW
    #6 15 to 22 kw3.2Full review

    For homes with central air that want a quiet 20 kW unit with monitoring included and a service-entrance switch in the box.

    Norwall $6,662.42
    $6,662.42
    20 kW18 kW65 dBA
  2. Cummins Quiet Connect RS13A 13kW
    #6 under 15 kw3.2Full review

    For homes on natural gas that want essentials covered by a quiet, well supported brand with monitoring included.

    Norwall $5,384.39
    $5,384.39
    13 kW13 kW65 dBA
  3. Cummins Quiet Connect RS17A 17kW
    #8 15 to 22 kw3.0Full review

    For average homes on natural gas that want full rated output and built-in monitoring from a commercial power brand.

    Norwall $6,264.97
    $6,264.97
    17 kW17 kW65 dBA

Every standby generator ranked