kibbleman wrote:

Saw a question from last year about using two thermostats and the
person was told to do ten different things other than what she wanted.
I NEED to use 2, and here is why. I have a recording studio where the
therm controls were mounted inside the room with the recording
equiptment. In the summer the therm turns on the air to cool this room
down because it can get over 85 pretty quick. The room with musicians
stays cool all the time. Now, in the winter, we have to move the therm
to the musicians room or the heat never goes on and it gets cold. After
a couple of years of moving this unit I decided to buy another
thermostat (I already ran two sets of wires to the heater) These rooms
are sealed off from one another with doubled drywall, staggered studs,
seperate entrys and sand between their isolated frames. so blocking
vents and all that stuff is not going to work. Was considering a 4pdt
switch to go from one to the other, but maybe there is another way?
Right now I just switch the wires inside the heater, but They will wear
out if I keep doing that. Thanks

You can wire them both in simultaneously, use a three way switch near
the unit to swap from one red to the other. The other wires don't need
to be switched.

oR1--to t-stat1
R from unit to 3-way Common--o----
oR2--to t-stat2

Ideally you should zone the system. As an add-on option, You can install
thermostatically controlled dampers in the duct system. The dampers are
controlled by a separate stat(s). Typically, with two zones, you'll want
the system stat in the zone with the least airflow (warmest in summer
and coldest in winter), with the damper's stat and damper controlling
airflow into the higher capacity zone.

An improvement over this is to get the ducts balanced. In some
situations this is impossible due to greatly varying load in specific
zones. This is common in many buildings, and the tenants often have the
same complaint. The add-on dampers work sufficiently well, and are
typically much less expensive than the other acceptable alternatives. HTH.

hvacrmedic