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haste_maker's avatar
haste_maker
Explorer II
Jul 15, 2023

Onan Generator

I have seen where Cummins has said that the Onan generator needs to run 2 hours each month under load (with the A/C on)..my question is what would you need to run during the winter when it's to cold for A/C.
  • I always used a 1,500 watt heater on my 2.5 kW Onan. If you have a 4.5 kW a single electric heater is probably fine. If you have a 5.5 kW or larger I'd use 2 electric heaters.
    You really should have an electric heater anyway. They're only about $25 and can save a lot of propane if you camp much in cold weather. I always run the electric heater on the camp grounds power that I'm paying for anyway instead of using up my propane.
  • StarkNaked wrote:
    Electric heater.


    Needs to be electric heaters PLURAL. If engine block heater, turn it on (assuming you are parked). Heat pump as long as ambient temperature above 40 degrees F.

    You are looking for around a 50% load.

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