Cummins RS20AE 20kW Home Standby Generator - Extreme Weather Model
The Cummins Quiet Connect RS20AE delivers 20kW of reliable backup power for your entire home, engineered specifically for extreme weather conditions down to -40°F. This home standby generator automatically monitors your utility power 24/7 and activates within seconds of detecting an outage, ensuring continuous power to your home until utility service is restored.
Extreme Weather Performance
Built to operate in the harshest conditions, the RS20AE functions reliably from -40°F to 122°F without requiring additional cold weather kits. The aluminum exterior with galvanized steel interior construction is evaluated to withstand 180 mph wind loads per ASCE7-10 standards, while NFPA 37 compliance allows installation just 18 inches from your building.
Powerful QSJ999G Engine
The naturally aspirated, air-cooled V-twin overhead valve engine provides 60.96 cubic inches (999cc) of displacement. This 3600 RPM engine delivers exceptional motor starting capability, easily starting and running a 5-ton air conditioner under full pre-load. The engine uses synthetic oil and includes low oil pressure shutdown protection for long-term reliability.
Quiet 65 dB(A) Operation
At just 65 dB(A), the RS20AE operates significantly quieter than comparable generators. The patented "crank only" exercise mode reduces noise even further by allowing the generator to crank the engine and run diagnostics without actually starting it, minimizing wear, fuel consumption, and sound during routine maintenance cycles.
Remote Monitoring Capability
Built-in remote monitoring allows you to check generator status, change exercise modes, and manually control operation from any computer, tablet, or smartphone. The under-hood display provides quick access to critical information, while the system continuously tracks performance and alerts you to any maintenance needs.
Intelligent Load Management
The advanced control system manages up to 4 separate loads, continuously monitoring power requirements for each circuit. It automatically prioritizes and restores loads based on available generator capacity, ensuring maximum utilization of the 20kW output without overloading the system.
Dual Fuel Flexibility
Field-selectable for natural gas or propane vapor operation (factory set to natural gas). The single 100A UL-certified circuit breaker, 4-amp battery charger, and direct-drive cooling blower ensure reliable operation on either fuel source with fuel supply pressure ranging from 3.5-12.0 inches H2O for natural gas.
Technical Specifications
The 60 Hz, single-phase alternator maintains less than 5% total harmonic distortion with ±1.25% voltage regulation from no load to full load. Long-life electrographic DC brushes and slip ring heater ensure consistent performance. Motor starting capability reaches 40 kVA at 30% voltage dip.
Comprehensive Warranty & Compliance
Backed by a 5-year/2000-hour limited warranty covering travel and labor for two years and parts for five years. UL 2200, CSA 22.2, B149.1, and EPA emissions certified. Meets all current safety and environmental standards.
Required Components (Sold Separately): Cummins Onan RA Series Automatic Transfer Switch, Group 51R 450 CCA Battery, Generator Pad
