Can I Replace My Onan QG 2500 LP Generator with a QG 2800i Dual-Fuel?
Published 11/12/2026 >
Question:
Can I replace a qg2500 lp with this generator or what would be the advantage of using the qg 2800 lp
asked by: George
Expert Reply:
Hey George, thanks for reaching out! Yes, the Cummins Onan QG 2800i Dual-Fuel Generator # CM76GR is a great option for upgrading your existing QG 2500 LP. It's not necessarily a direct bolt-in replacement, though, so you'll need to verify the mounting dimensions, electrical connections, exhaust routing, and fuel connections before making the swap.
The biggest advantages of the newer 2800i are its inverter technology and variable-speed engine, which provide cleaner power for sensitive electronics while reducing noise, vibration, and fuel consumption. Another nice feature is its ability to operate on either gasoline or propane, giving you more flexibility than your current propane-only generator.
Are you primarily looking to upgrade for quieter operation, or are you hoping to get a little more power for your RV's air conditioner and other appliances?
Product Page this Question was Asked From
Onan Generator - QG 2800i DF Onboard RV Generator - 2,800 Watts - Gas or Propane
- Generators
- Inverter
- Gas
- Gas and Propane
- Propane
- 2001 - 3000 Watts
- Onboard Generator
- 120V Output
- Electronic Fuel Injection
- Electric Start
- Cummins Onan
more information >

