Cummins Onan QG 2500 EVAP RV Generator

Cummins Onan QG 2500 EVAP RV Generator – 2.5kW, Propane, Ultra-Quiet & Fuel-Efficient

The Cummins Onan QG 2500 EVAP RV Generator (2.5HGLAA-8304) is a compact, ultra-quiet, and fuel-efficient propane-powered generator, designed to deliver reliable power for RVs, travel trailers, and specialty applications. Known as the quietest generator in its size class, the QG 2500 maintains low fuel consumption while delivering stable and clean power, making it ideal for sensitive electronics and appliances.

Designed with computer-controlled variable speed operation, this generator adjusts engine speed based on power demand, reducing noise and vibration. Its permanent magnet design and inverter technology provide high power quality, ensuring seamless operation for RV owners who require efficient and stable power output.

Key Features

• 2.5kW Continuous Power Output – Capable of starting and running a 13,500 BTU high-efficiency air conditioner plus a 600W base load.

• Quietest Generator in Its Class – Minimized noise and vibration with computer-controlled variable speed operation.

• Fuel-Efficient Propane System – LP-powered for clean energy and extended runtime.

• High Power Quality with Inverted Electrical Output – Protects sensitive RV electronics from power fluctuations.

• Completely Enclosed Design with Built-In Muffler – Ensures low noise operation and easy installation.

• Increased Oil Capacity & Low Maintenance –

  • Reduced oil consumption

  • No required oil checks between recommended oil changes

  • High oil temperature sensor & low oil shutdown for added protection

• Meets ANSI/RVIA EGS-1 Standards –

  • Voltage Regulation: ±10%

  • Frequency Regulation: ±5%

• J1939 Communication Compatible – Enables diagnostics and performance tracking.

• EVAP Model for Specialized Applications – Meets strict evaporative emission standards.

• 3-Year Limited Warranty – Backed by Cummins’ trusted reliability.

Specifications

• Fuel Type: Propane (LP Gas)

• Power Output: 2.5kW (2500W)

• Voltage: 120V Single-Phase

• Air Conditioner Operation: Supports one 13,500 BTU high-efficiency AC unit + 600W base load

• Voltage Regulation: ±10% (ANSI/RVIA EGS-1)

• Frequency Regulation: ±5% (ANSI/RVIA EGS-1)

• Engine Type: 4-Cycle, Single Cylinder, OHV

• Engine Displacement: 252cc (15.4 in³)

• Compression Ratio: 8.8:1

• Power Output: 7.1 HP (max) @ 3600 RPM

• Cooling System: Pressurized Air-Cooled

• Cooling Air Volume: 120 ft³/min (3.40 m³/min) at full load

• Combustion Air Requirement: 7.2 ft³/min (0.20 m³/min) @ 2900 RPM

• Fuel System:

  • Electric Fuel Solenoid (LP Model)

  • Electric Fuel Transfer Pump (Gasoline Model)

• Design:

  • Permanent Magnet Alternator (No Bearings, No Brushes, No Exciter System)

What’s Included

• Cummins Onan QG 2500 EVAP Propane Generator (2.5HGLAA-8304)

• Integrated Muffler & Enclosure

• User Manual & Specification Sheet

Ideal For

• RV Owners & Campers – Provides quiet, efficient, and stable power for air conditioners and essential appliances.

• Eco-Conscious Travelers – Propane-powered system reduces emissions and fuel costs.

• Boondocking & Off-Grid Living – Fuel-efficient and designed for long-term use.

• Specialized EVAP Applications – Meets strict evaporative emission standards.

The Cummins Onan QG 2500 EVAP Propane Generator is a highly efficient, quiet, and durable power solution, perfect for RV enthusiasts who need reliable off-grid power without excessive noise or fuel waste.