On Feb 24, 12:17*pm, "Pete C." wrote:
RBM wrote:

"Aaron Fude" wrote in message
....
Hi,

I need to run a wire from the attic (where the A/C and heating units
will be) to the location of the thermostat on the first floor. I don't
know specifically what I'll have in the attic and what thermostat I'll
have.

How many wires should I have in the wire to make sure I'm not short on
that number in the future. Is six wires good enough for any heater+A/C
combination?

Thanks!

It depends upon the equipment. If it's not a heat pump, and just a garden
variety furnace / ac unit, 4 wires is enough. Two thermostat wires will also
need to be run from the air handler to the condensing unit as well

If you pull 5 wire cable to the thermostat location separately from the
attic air handler location and the outside condenser location you should
be good for most any system. That's what I ran for my new heat pump and
I used 4 of the 5 to the air handler and 5 of the 5 to the condenser.- Hide quoted text -

- Show quoted text -

6 should be enough for all known likely heat/AC units