I have mini splits and they are extremely economical for heat and air conditioning.
One of them is in a 3 level rental house with one unit outside feeding the three heads. It takes a little bit of an education process to have the tenants understand that the units will either put out heat or A/C but it cannot do both at the same time. So if someone on one floor switches to A/C while the other two heads are on heat it will stop functioning. For that reason I now wish that I had three separate units installed but other than that they are excellent.
They newer models get more efficient every year so sometimes the local vendors have used units that are only a few years old for sale at a discount when people trade them in to upgrade.
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