In an effort to make the basement and my daughters bedroom warmer Ive been running my fan 24/7 except we have one furnace with a damper system attached to it. So there are two thermostats that can call for heat. The upstairs thermostat is set to 19.5 all the time. The downstairs is set to 19.5 as well. I only have the upstairs fan set to run all the time. My question is - if the downstairs thermostat calls for heat will it just change the dampers to close upstairs and open main level/basement even though the fan is running always on for the top floor.
Last night I set the upstairs to 20 with the fan on and I found that the whole house was overall warmer. The basement which is usually between 15 and 16 all the time was a cozy 19.5 this morning. The main level was 22 and the upstairs was 20 as well.