I have an old 4 story building with one thermostat controlling the steam heat to all floors. There is a commercial space on the ground floor and they are complaining that they don't get enough heat sometimes (and on occasion get too much!) They have suggested that there is some way to place a...

The house had a two-zone heat/cool system, with two non-programmable thermostats (round ones). I replaced the MASTER thermostat with the Honeywell RTH6400 (programmable). It seems to work fine. However, the old thermostat had two wires too many to be accommodated in the new one, so I left them...

We have a two story house approx 3,200 Sqft, dual zone heat/AC and programmable thermostats. Our bedroom is on the first floor, and we have a large great room with a 2 story ceiling. With the kids having moved out, we don't want to spend more for heating the house than necessary. We don't need...

I have a situation where I would like to have two thermostats controlling the furnace. There is no cooling system involved, just heating. Does this require any special type of controller? Or is it possible to just hook the two thermostats in parallel to the furnace?

Bought an old 3-storey house in Maine, heated with gas forced-hotwater radiators. There is only 1 zone, with the thermostat in a 1st floor front room with little traffic and away from any radiator. When the t'stat calls for heat, it takes so long for it to register at the t'stat site, that the...