Are there any mini-split units that can use a 'real' thermostat? I want to be able to use a commercial thermostat with temperature lockouts with it so that there's no abuse and no one makes the building's heater fight the mini split unit.
A little background - the building is in Superior, Wisconsin where the design temperature is 76 F for the summer (and something like -27 F for the winter). State law says that the AC can't be designed for more than the design temperature... the problem is it gets well over 76 F for at least a month every summer, several days in the mid 90's. So the system could barely keep up as it was, and now we've added more users and workstations to one of the rooms that was already marginal at best. And the room faces west, with large windows, brick walls, and a flat black rubber roof.
The heating system kicks butt, of course. Gas hot water boiler with a gas furnace to back it up, and just in case there are electric strip heaters everywhere.