20kW Air-Cooled Residential Standby Generator, Quiet Connect Automatic Power System

The Cummins Quiet Connect Extreme Cold RS20AE is a permanently installed standby generator designed to provide automatic whole-home backup power during outages. Operating on natural gas or propane, it restores electricity within seconds of utility interruption, keeping essential systems running without manual startup or refueling.

Built with a corrosion-resistant aluminum enclosure and heavy-duty internal components, the RS20AE is engineered for long-term outdoor installation. Its fully enclosed, sound-attenuated housing reduces operational noise while protecting the generator from year-round weather exposure.

With 20kW of output capacity, the RS20AE supports larger residential loads, including multiple HVAC systems. The air-cooled design offers dependable performance in a compact footprint suitable for residential properties.

The Quiet Connect system is equipped with a digital control panel and supports remote monitoring through Cummins Connect Cloud.

What’s the Extreme Cold Weather Kit?

The RS20AE includes Cummins’ Extreme Cold Weather Kit as part of its all-weather configuration, engineered to support reliable operation in temperatures as low as -40°F (-40°C).

It helps to:

• Ensure reliable starting in extreme cold
• Maintain battery and engine oil temperature
• Reduce condensation and moisture-related issues
• Protect internal components during winter operation

Designed for severe winter climates, this configuration provides added confidence during cold-weather outages.

Why Pair a Standby Generator with an Automatic Transfer Switch?

A standby generator performs seamlessly when paired with a properly sized automatic transfer switch (ATS).

The ATS detects outages instantly, transfers electrical load safely and automatically, prevents backfeed into the utility grid, and restores utility power when service returns.

When combined, the generator and transfer switch create a fully automated backup power system that operates without manual intervention, providing continuous protection for your home.

Electrical Specifications

• Rated Output (LP): 20,000 watts

• Rated Output (NG): 18,000 watts

• Voltage: 120 / 240V

• Frequency: 60 Hz

• Amperage: 83A (LP) / 75A (NG)

Fuel Consumption

Natural Gas

• 205 ft³/hr @ 50% load

• 300 ft³/hr @ 100% load

Liquid Propane

• 2.0 gal/hr @ 50% load

• 3.0 gal/hr @ 100% load

Engine & Operation

• Engine displacement: 999cc

• Engine speed: 3600 RPM

• Cast-iron cylinder sleeve

• Automatic low-oil pressure shutdown

• 12V automatic start system

Physical Specifications

• Length: 34-1/8"

• Width: 36"

• Height: 27-5/16"

• Weight: 540 lbs

• Cooling: Air-cooled

• Enclosure: Aluminum / steel