This unit replaces a working 10,000 BTU LG Air Conditioner/Heat Pump that was over ten years old and still working great, but this unit is 110 vs 220 and a 12,000 BTU that now pulls my 500 sq ft work shop down to 66 degrees and is really efficient.

As a foot note:  When I installed this new unit I found that the case was exactly the same size as my old unit so all I had to do was slide the old unit out and slide the new unit in, amazing. The old unit is still working great, but now in my son's 300 sq ft work shop.