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These units operate a little different than your normal furnace or AC. The normal units cut on when the inside temperature falls to 2 or three degrees from set temperature. Then run until the desired temperature is reached.
These don’t work quite that way. The inside unit is always sampling the air temperature. When the inside air drops or rises the outside fan and compressor cut on but just enough that you could almost count the revolutions the fan is running. The inside air will be about 80 degrees as the outside temperature decreases the fan and compressor speeds up and the inside air temperature increases just enough to keep the house at the set temperature. This continues as the outside air gets colder until the inside air temperature is up to 120 or 130 degrees or maybe higher. That is as high as I have seen it and then only once. The advantage is it keeps your home at a more consistent temperature. Yes there is a disadvantage. The thermostat is in the inside unit so it’s keeping that unit at the set temperature. So you need to adjust the temperature up and down a couple degrees to stay comfortable. The other disadvantage is you need a unit in each room and that will get expensive if you have a lot of rooms. My home is ideal for a mini split one large room down stairs and two upstairs plus the sun room. The real advantage is you can heat and cool each room to a different temperature and they are much cheaper to run.
Lynwood
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