I went for this Steam Generator because of the other good reviews, and my thinking it was the best deal for the $140.00 I paid for the 6 kW version, after comparing it to other deals. I asked before purchasing about it being a 240ac split phase USA version, which differs from the European 220v single phase. I was happy to confirm by taking some panels off for inspection; to find all the inner wires were tight, it has a plastic cover (removed for the picture) that clearly shows where L1 & L2 electrical lines connect, with obvious grounding wire connection. I see good indicators this steam is properly wired for USA standards 240vac split phase (and I have wired up 3 houses). ... I still have to build my steam room; and intend to hook this for a steam test soon, before my steam room is finished. ... Hench my Thumbs up is holding back one star for until I do my steam testing; and update my review then. IMO: This is good deal after confirming kW version is a match to the cubic meters or cu ft you want to heat. My Two Cents :+)