The system also is different from most central air units in that it adjusts the speed/power consumption to load. That is: the central unit only runs at partial power if that’s all it needs, whereas standard units have two power levels- off and on. Another consideration is that it is a heat pump: in the winter it can be used to heat the rooms. I’ll be curious to see how that functions, but supposedly it works quite well in our climate.

The whole leak thing is an obvious concern: there are many yards of copper piping involved. One plus, I guess, to the way the pipe is run is that it is almost entirely on the outside of the house. If there is a leak of whatever magical chemical soup they use in air conditioning units these days, it will mostly vent/evaporate outside.

But right at the moment, with the temperature heading for the mid-30’s, worries of leaks or efficiency seem largely irrelevant. Wait until we get our first post-installation power bill, though!