I'm actually asking on behalf of a neighbour with the problem. We all have in-floor heating with the same thermostats, about 4 in each unit. Apparently the former owner of her townhouse unit "fooled around" (my words) with her thermostats for some now unknown reason and it is now impossible to...

Hi There, Recently installed 2 (240V) True comfort systems, to cover a roughly 200 Sq foot area. Needed two, because of weird configuration in room and couldn't get the square footage exact. Here's my question, at $180.00 a pop, do I really need 2 240v thermostats? The controls for both are in...