Description

Cummins QuietConnect™ 20kW Air-Cooled Extreme Weather Standby Generator

The Cummins QuietConnect™ 20kW Air-Cooled Extreme Weather Standby Generator (RS20AC Series) is engineered for homeowners and professionals who demand uninterrupted power during grid failures. This emergency-grade, air-cooled standby generator delivers 20,000 rated watts at 120/240V single-phase, running on LP or natural gas. Certified to EPA, UL, CSA, and NFPA 37 standards, it installs just 18 inches from a building — ideal for residential and light commercial sites across the USA and Europe.

Designed for extreme conditions, this Cummins Onan-powered unit operates at 0°F (-18°C) out of the box, and with cold weather accessories, performs down to -40°F (-40°C). The patented “Crank Only” exercise mode runs diagnostics without starting the engine, reducing wear, fuel costs, and noise. Intelligent load management controls up to 4 loads, automatically balancing power to start a 5-ton AC unit under full pre-load.

Remote monitoring is built into every generator via the Cummins Connect Cloud mobile app. Use any smartphone, tablet, or computer to monitor status, change exercise schedules, or manually start the generator from anywhere. The package includes both the 20kW generator and a 200A service entrance rated automatic transfer switch (ATS), simplifying ordering and installation.

With a weather-protective aluminum/steel enclosure, low 65 dB(A) noise level at 7 meters, and a standard 5-year / 2,000-hour limited warranty, the QuietConnect™ RS20AC is the premium choice for reliable backup power across all seasons.

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Specifications

• Grade: Emergency

• Style: Standby (Air Cooled)

• Run Watts: 20,000 Rated Watts

• Voltage: 120/240 Single-Phase

• Fuel: LP / Natural Gas (field-selectable)

• Engine: Cummins Onan 999cc V-Twin OHV, Air-Cooled

• Enclosure: Weather-protective aluminum/steel, sound-dampening

• Installation Clearance: 18 inches from building (NFPA 37 compliant)

• THD: <5% (clean power for electronics)

• Exercise Modes: Programmable time/date/frequency + “Crank Only”

• Load Management: Controls up to 4 loads (kit sold separately)

• Remote Monitoring: Cummins Connect Cloud (mobile app, web)

• Cold Weather Performance: 0°F (-18°C) standard; optional down to -40°F (-40°C)

• Low Oil Pressure Shutdown: Yes

• Warranty: 5-Year / 2,000-Hour Limited

• Sound Level: 65 dB(A) at 23 ft (7 m) at normal load

• Dimensions (LxWxH): 34.1 in x 36.0 in x 27.3 in (865 x 915 x 694 mm)