Hi tbt
At first I would like to say that the Sanyo heat pumps has a good reputation in Sweden as reliable, silent and powerful machines, especially when the temperature drops. Some people express that the sound level from the outdoor unit is a bit high, but this is also the case with many other brands of heat pumps. One should never mount a outdoor unit on a wooden wall, the vibrations travels through the wall and it´s like living inside a guitar druing a concert. It seems that the 123-size has better references than the 93-size.
There are two different models of the Sanyo. At first it´s the EHN-model without heating cable, 5 holes in the basin and a temperature limit at -20 centigrade. The other model is the EH-model which has an electrical heating cable, 3 holes in the basin and no temperature limit. The EH-model is now upgraded with an jonization unit and has the additional letters "FP".
As far as I know there is no difference regarding technical performance between the EH(FP) and the EHN models. It seems that both machines works in our climate.
Both models are manufactured in China. In some cases this meand quality problems, but I don´t think it is the case with Sanyo heat pumps.
Best regards/Gano