Can the Cummins Onan 11,000W Generator Run Two RV Air Conditioners?
Updated 06/20/2026 | Published 06/19/2026
Question:
Can the Cummins Onan 11,000W Generator Run Two RV Air Conditioners?
asked by: Mike A
Expert Reply:
Yes, the Cummins Onan 11,000 Watt Tri Fuel Generator part # CM98MR is designed to run two RV air conditioners at the same time and has the capacity to handle many dual 15,000 BTU AC setups. On gasoline, it produces 11,000 starting watts and 9,000 running watts, which is more than enough for the running load of two air conditioners and their startup demands in most RV applications.
Even when operating on propane or natural gas, the generator still provides substantial output. It is rated for 10,000 starting watts and 8,100 running watts on propane, and 8,800 starting watts and 7,200 running watts on natural gas. That means it can still support two AC units while giving you the flexibility to choose the fuel source that works best for your situation.
For even smoother operation, I recommend turning on one air conditioner first and allowing it to stabilize before starting the second. If you plan to run other high-draw appliances such as a microwave, residential refrigerator, or electric water heater alongside both AC units, adding soft start modules to the air conditioners can help reduce startup surges and maximize the generator's available power.
One of the things I like most about this generator is that it gives you the power of a larger home backup unit while still being flexible enough for RV use. If you let me know the size of your air conditioners and what other appliances you plan to run at the same time, I can help you get a better idea of what to expect from your specific setup.
Product Page this Question was Asked From
Onan 11,000-Watt Tri Fuel Portable Generator - Gas, Propane, or Natural Gas - Remote Start
- Generators
- Inverter
- Gas
- Gas and Propane
- Propane
- 4001 Watts or More
- Portable Generator
- 120V Output
- 240V Output
- Carbureted
- Electric Start
- Recoil Start
- Cummins Onan
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