We got this as our gas heater wasnt heating the whole home it was too small but this seems to get the rest if the home . The air con works great I have very small living area and its actually too cold for me but the heating I don't like because it hits me in the face but that's because of where we had to install it so I can not fault it at all apart from saying eould be great for a bigger living area and I live in Tassie so barely need to use the air con. The remote is a bit hard for me to workout but I'm not real good with these things either. Cant say about maintenance etc yet. Has a bit of noise to it though and have to have television volume turned up.

The unit copes very well with QLD summers and high demands. I also have a smaller unit in my bedroom, and it too copes exceptionally well.
The features and controls are great, particularly timed starts and/or finishes.
When the temperature gets below freezing, the units effectively defrost.