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Old 01-25-2022, 04:52 PM   #4
Chance
Senior Member
 
Brand: Still Looking
State: Texas
Posts: 6,187
THOR #2121
On mid-size motorhomes like the 29M, a few manufacturers have installed two 11,000 BTU/hour Power Saver air conditioners that pull just above 1,000 Watts each, so they can operate at same time from 4,000-Watt generator. They do require a load shedding system so that if you turn on the microwave or high-power hair dryer at same time, it will shut down one air conditioner for a few minutes until other electrical loads are finished.

Technology is improving quickly, so it’s hard to say what else they are including in dual-A/C package. I’d ask for air conditioner model since new 13,500 BTU/hr can also pull just over 1,000 Watts and can have soft start from factory (that would make it easier on generator).

Running two energy-efficient A/C on 4,000-Watt generator is to save initial cost, save weight, and reduce generator fuel consumption. I’m sure some buyers will prefer larger 5,500-Watt generator, but Thor specs don’t even show that as an option. It seems there is no choice but Onan 4000.
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