Our old Eco-fan would no longer run. Dearest had over heated the cook stove last winter and the sring that propels the fan died. I wasn't going to get a new one, but I broke down after a few damp cool nights.
The cook stove is at the far end of the kitchen and it heats the house but without a fan, it only heats the kitchen to 'hot' and the rest of the house is still kind of cool. I can't believe the difference this little fan makes.