Fujitsu wired thermostat dilemma
This fall I installed a Fujitsu mini-split installed (AOU15RLS3H with ASU15RLS3) in my Vermont house. I have been frustrated that the temperature at the unit (near the ceiling) is higher than the rest of the room and that the temperature difference varies depending on the outside temperature, whether the insulated window shades are drawn and the amount of sun coming in the south windows. So I decided to spend the $450 for a wired remote. Then I learned that with the wired remote I will lose the ability to set the thermostat below 60 degrees — currently when the house is empty for a week or two I can set it at 50 degrees.
So it seems I that if I choose the wired remote to get a comfortable temperature without changing the thermostat constantly I will have have to waste money by over-heating a vacant house.
(1) Is there any way to get a remote thermostat without sacrificing the ability to turn down the heat below 60?
(2) I am building an addition that will have its own mini-split. Is the best solution to get a floor standing unit, so that the measured temperature will be close to the one felt by people in the room? Or would a ceiling fan move the air around enough to equalize the temperature?
(3) Do Mistubishi units have the same problem?
(4) Is there any chance that manufacturers will figure out that while having the temperature sensor in the unit, close to the ceiling probably works OK for an air conditioner it does not work well in a heater?
GBA Detail Library
A collection of one thousand construction details organized by climate and house part