Posted yesterday about my initial experiences with this unit. Still happy but have some reservations now.
First, in air conditioning mode, the fan is variable speed and the unit is very quiet when running at low speed. Perfect for a bedroom. When running in heating mode, the fan is at high speed and there is no way to slow it down. Very loud.
Second, when it is in heating mode, it is taking air from the room, extracting the heat from it and venting the chilled air out through the window vent. It then recirculates that warmth through a second fan system and sends it back into the room. That part works great - it warms up the room very quickly. The problem is that as the air is chilled, moisture condenses out of it and flows into a tank in the unit. The unit is fairly large and heavy and they had (as a part of the design) to restrict the size of that tank. Unfortunately, the tank is so small that it only allows for about two hours of heating before the unit shuts down with an error code saying that the tank needs to be drained. This will not work for unattended operation as I needed to get up and empty the tank every couple of hours.
The upshot? I am keeping this but doing a semi-permanent installation where I run the vent through the house wall to the outside and install a permanent hose for drainage. It is too loud to operate in heating mode while trying to sleep - I will continue to use my little electric space heater for that.
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