Started by Dogkinkead, November 22, 2021, 01:44:09 PM

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I have a 13QBB with the air conditioner mounted through the side, looks like a conventional AC window unit.  Question is what size generator or inverter would I need to run the AC while boondocking? 


For an RV air conditioner, the starting wattage is typically around 3,000 watts. However, you'll want to purchase an inverter between 3,500 and 4,000 watts so you don't max out your inverter. It also may be a good idea to buy a soft starter.
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You will need to determine the starting watts required by your AC unit. This information can also be found on the label or in the user manual. Most air conditioners require 2 to 3 times their rated power consumption to start up, so in the example above, the starting watts could be between 3,000 and 4,500 watts.

Once you have these numbers, you can choose a generator or inverter that can provide enough power to run your air conditioner. A generator with a rated output of at least 3,000 to 4,500 watts and a starting output of at least 4,000 to 6,000 watts should be sufficient. Alternatively, you could use an inverter that can handle the starting watts of your AC unit, such as a 3,000-watt inverter e.g.Firman W03083. Keep in mind that the inverter must be connected to a battery or other power source, such as a solar panel, to work properly.