During wintertime, the furnace air has been drying out the family sinuses. Also, we have been sick a few times. While investigating, I thought maybe it was a furnace issue.
I had a reputable furnace man out. He suggested having the furnace cleaned/AC cleaned and each air duct cleaned. For a total of $500.
I have heard that the furnace/AC cleaning is a good idea. I have also heard that duct cleaning is just a scam, because the filter picks up the dirt that would be in the duct.
Any thoughts on that?