by Mark Hansberger on October 15, 2020September 30, 2020 What Can a Variable Speed Furnace Do for Your Home? Instead of the traditional furnace blower that runs at only one speed — full blast — a variable speed blower adjusts airflow to meet the fluctuating heating requirements of the moment. These units incorporate a […]Read More Filed Under: Furnaces Tagged With: airflow– furnace efficiency– multi speed furnace– variable speed fan motors