Cummins RS20A Cold Weather 20kW Quiet Connect Home Standby Generator — C20N6H
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At a glance
- Standby Rating
- 20 kW (LP) / 18 kW (Natural Gas)
- Voltage/Phase
- 120/240V, Single Phase, 60 Hz
- Fuel
- Natural Gas or LP (field-selectable)
- Engine
- Cummins QSJ999G, 999cc V-twin, naturally aspirated
- Cooling
- Air-cooled
- Sound Level
- 65 dB(A) at 23 ft (normal load)
- Dimensions
- 34.1" L x 36" W x 27.3" H
- Weight
- Approx. 531-540 lbs
- Cold Weather
- Factory-equipped for operation down to 0°F out of the box
- THD
- Less than 5% total harmonic distortion
- Warranty
- 5-year / 2,000-hour limited (2 yrs travel & labor, 5 yrs parts)
Why this generator
- 20 kW of clean standby power (under 5% THD) safe for sensitive home electronics
- Cold-weather ready out of the box — runs reliably down to 0°F with no add-on kit (C20N6H Cold Weather model)
- Quiet 65 dB(A) operation, among the quietest air-cooled home standby generators
- Field-selectable Natural Gas or LP fuel with Intelligent Load Management to power multiple central A/C units
- Tough 180-mph wind-rated aluminum enclosure, NFPA 37 compliant for installation just 18 inches from the home
- Backed by a 5-year / 2,000-hour limited warranty including 2 years of travel and labor coverage
Everything you need to know
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.
Part Number: A071Z202
Free shipping to the contiguous US.
Frequently asked questions
What fuel does the C20N6H run on?+
The C20N6H 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.
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.