In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
I have a Nordyne furnace and the service tech recently replaced a limit switch set at 225 degrees ( the old one was set at 205 degrees). I have a variable speed fan motor on a 72,00 btu furnace and the cfm setting was on 1050. The tech said he had raised that to the next level (which I believe was 1200 cfm). After several weeks I found the house to be quite dry and uncomfortable. I tinkered with the switches below and attempted to return it back to its original setting but I mistakenly set it higher (1500 cfm).
After more discomfort I went down and realized what I had done and reset it at the original 1050 cfm. I also changed the air filter which was understandably pretty dirty.
Now I'm not sure if it's just me or something is not right. Everything seems to be working but the fan speed sounds noisier and the dry and discomfort remains. Is it possible that something needs to be reset? I have turned the burner switch on and off, as well as the thermostat. With the weather changing so much ( dramatic rise and fall of outdoor temps recently) it's hard to judge if the forced air heat is working as it was in the past.
I'm trying to avoid another charge/call to the furnace contractor.
Thanks for any suggestions!