You might also want to consider Midea's U-shaped air conditioner. It's mini-split technology, but the installation and function are more like a window air conditioner. We got a couple this spring, one for a home office that has no existing HVAC, the other for the large common area of our house that is probably about 800 square feet (basically four rooms that are all quite open one to another). They handle mild weather beautifully, and while we do have and use our central air conditioning as necessary when it's too brutal outside, they have taken a huge load off of it and lowered our bills substantially. (We are in South/South Central Texas, so I actually just turned one on in our upstairs now that the sun is streaming in and it's over 80 and a bit humid in the house.)Interesting... I have solar/battery and juice to spare. I use a swamp cooler in the summer, but it's noisy (and due for a replacement). Maybe a minisplit would work for me (quiet operation is a huge plus). House is 800 square feet total.
@Brian26, I think you are the one from whom I learned about Midea's promotion in the spring. I appreciate your posting the information. Are you using one of these anywhere?
@peakbagger, our solar system just went active yesterday. We haven't been needing HVAC this month because it's so mild, but I think that right now I'm having some free cooling in November. A cold front should be moving in tomorrow, though, so there may be some heating later in the month.