I looked but couldn't find this question addressed.
I am looking for a programmable thermostat that I can program to run the blower every hour for 5 to 10 minutes to circulate the air and filter it. Is there such a beast for a home? If so, where do I look?
Honeywell, 3m's Filtrete Wifi thermostat, the Lennox as mentioned, and a few others have the functions you are looking for. Look at spending a little more, than you would for a thermostat that does not have this function. The 3m thermostat runs around $100 for the basic model, but from the looks of it, it is a pretty robust thermostat, and no fee to access the settings through your home network from a remote location.