I'll have to research that. Like I said... just a couple of months for me.
I wonder why they would have them at 220. I mean the components of the machine must be a motor for the drum, a small compressor, and a small heater. I don't see why that couldn't run on 110.
You said yours in 1000 watts which sounds about right. It wouldn't take a very big heater to heat up a dryer drum that's not venting out any of the heat.