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I have added many mini splits units for upstairs bedroom use. A single unit just isn't as effective unless you get into auto dampers and such like a big building. Too much money for that in a res. setting. Mini splits installs are normally in the bedroom to help out in those long summer hot days. As hot air raises, its trapped near the highest part of the house and it radiates back into the living area burning us to death. One way is to install small vents or fans to pull air out of the highest point of the house. No weak AC system is going to win that battle. So, installing mini splits help with that task. Its normally about 3-3500 bucks for a single unit, add another 1000 bucks for two air outlets. Still the hallway will be hot. I like that only one room can be turned on for the night while the rest of the house is off saving enegry and program it to come on before sun up.
Run your numbers and see what benefits you.
Last edited by look 171; 03-11-2021 at 10:05 PM..
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