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Old 06-02-2018, 11:25 AM
  #2  
Corndog38
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Join Date: Jun 2014
Location: Middle Sound, NC
Posts: 7,575
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Pretty rare for house or other backup gennies to use inverter tech. Inverter tech allows gen to run at a variable speed so can be much more quiet and efficient at low load. But the electronics have a cost and it gets substantial when you get into several kW. A packaged house backup unit can be made very quiet with enclosures, and as a backup efficiency is not that important. Pretty much all of them are synchronous rotating field machines (constant rpm). Might have elaborate voltage regulation, but even the most basic VR works fine.

I would not bother trying to find something in that size with inverter tech.
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