Minis read the temperature at the head not the remote.

 

Understood. Still, If the remote is set to 66, it should be telling the head to stop when the temp at the head reaches 66, no?

Since the head is HIGHER than the thermometer we are checking temps at, I would expect the thermometer to read lower than the setting for the split, since heat rises.

So, WHERE the split reads temperature seems irrelevant. I will place a thermometer near the reader at the head but I seriously doubt it is going to show me 66 degrees.

 

I don't think this is a matter of temperature calibration. If it were, cooling would be off as well as heating.

This sounds more like the typical multi-zone mini split issue, where you have units grossly oversized for the spaces they're serving (36K for two rooms is just ridiculous), one satisfies before the other, and the satisfied unit keeps pumping hot air out, because these systems cannot completely shut off individual units in heating mode.

Solution is to switch to a wired controller for each unit (so temp is being read at the wall, not the unit), and configure fans to shut off completely when there is no call for heat (so satisfied units are not pumping out hot air). Your installer should be able to do this.

 

I don't think this is a matter of temperature calibration. If it were, cooling would be off as well as heating.

I was thinking the same thing but wasn't sure if they were treated completely separate in a mini split for some reason. Maybe sep

This sounds more like the typical multi-zone mini split issue, where you have units grossly oversized for the spaces they're serving (36K for two rooms is just ridiculous), one satisfies before the other, and the satisfied unit keeps pumping hot air out, because these systems cannot completely shut off individual units in heating mode.

I agree, these units are way bigger than needed but I had two different AC companies recommend the same solution. The entire building is only 640 square feet. Does have 14 ft vaulted ceilings but stil...

Solution is to switch to a wired controller for each unit (so temp is being read at the wall, not the unit), and configure fans to shut off completely when there is no call for heat (so satisfied units are not pumping out hot air). Your installer should be able to do this.

Do you think one of the wifi wireless, like a Sensibo, would work any better or still have the same issue?

Thanks for your input!