Cummins RS20AC Cold Weather 20kW Quiet Connect Home Standby Generator with ATS — Cold Weather C20N6HC (Combo)
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At a glance
- Standby Power
- 20 kW
- Voltage / Phase
- 120/240V, single-phase, 60 Hz
- Fuel
- Natural Gas or LP Vapor (single fuel, field-selectable)
- Rated Amps (NG / LPV)
- 75 / 83.3 A
- Engine
- Cummins QSJ999G, V-twin OHV, 999cc, 3600 rpm
- Cooling
- Air-cooled
- Sound Level
- 65 dB(A) at 23 ft (7 m), normal load
- Dimensions (L x W x H)
- 34.1 x 36.0 x 27.3 in (865 x 915 x 694 mm)
- Weight
- 596 lbs (271 kg)
- Transfer Switch
- 200A Service Entrance Rated ATS, NEMA 3R aluminum (included)
- Enclosure
- Aluminum exterior, galvanized steel interior; rated to 180 MPH winds
- THD
- Less than 5%
- Cold Weather
- Operates to 0°F out of the box; extreme cold weather kit available for below-zero
- Warranty
- Generator: 5 years / 2,000 hours; Transfer switch: 2 years
Why this generator
- Whole-home 20kW backup that powers a 5-ton A/C under full pre-load, with Intelligent Load Management controlling up to 4 loads for maximum generator utilization
- Among the quietest in its class at just 65 dB(A), using Cummins patented sound-attenuation and an advanced housing design
- Ships ready as a combo with a 200-amp service-entrance-rated automatic transfer switch in one box for simpler ordering and installation
- Cold-weather ready out of the box down to 0°F, with an optional extreme cold weather kit to run well below zero
- Corrosion-resistant aluminum enclosure with galvanized steel interior, evaluated to withstand 180 MPH winds and installable just 18 inches from the home (NFPA 37)
- Built-in remote monitoring lets you check status, set exercise schedules, and start/stop from a computer, tablet, or smartphone
- Backed by a 5-year / 2,000-hour limited generator warranty (transfer switch 2 years)
Everything you need to know
Genset: 20kW, 120/240V, 60 Hz, NG/LP, 75/83.3A, 3600 rpm, 100A circuit breaker, remote monitoring capability, 4A battery charger, 65 dB(A) rated sound-attenuated weather protective enclosure, alternator slip ring heater, Includes the extreme cold weather kit installed. NFPA 37 compliant. ATS: 200A service entrance rated, NEMA 3R
Highlights
- Factory-authorized Cummins dealer
- MAP pricing — no hidden markup
- Whole-home standby coverage
- Expert sizing & installation available across NC & SC
Part Number: A071Z395
Free shipping to the contiguous US.
Frequently asked questions
What fuel does the C20N6HC run on?+
The C20N6HC runs on natural gas or LP (propane), selectable at install.
Does the price include installation?+
No — the online price covers the unit shipped free to the lower 48. Professional installation is available in NC & SC on a quote basis; outside that area we'll help you find a qualified local installer.
How fast does it ship?+
Free curbside / liftgate shipping to the contiguous 48 states. Most orders leave the warehouse in 3–5 business days.
What warranty is included?+
5-year limited factory warranty, registered and supported directly through Cummins.
Is financing available?+
Yes — 0% APR financing is available on qualifying orders. Ask us for details before checkout.
Is a transfer switch included?+
Yes — this configuration ships as a combo with a matched automatic transfer switch (ATS).
Free curbside shipping
Liftgate delivery to the lower 48. Most orders leave the warehouse in 3–5 business days.
Install help, no upsell
We size, spec, and connect you with a vetted local installer — or talk your contractor through it for free.
Real Cummins warranty
Full 5-year limited warranty — registered and supported through Cummins directly.