What is a Variable Speed Blower?
Why would I want one? The variable speed blower is designed to properly adjust the airflow supplied your duct system during each mode of operation. Standard furnace blowers are operated at low speed for the heating modes, with the highest speed for air conditioning and/or continuous fan operation. Variable speed blowers have more than just a low, medium and high speed. The variable speed blower will adjust itself to overcome restrictions within the airstream, such as an air conditioning coil. They are ideal when used in zoned systems where there are ever changing variables of zones opening and closing. They are quiet. Another advantage of the variable speed is the reduced electrical cost of operation, particularly when used in a continuous fan mode. The blower speed in the continuous fan mode can be adjusted to allow very quiet, economical operation and in this mode your air cleaner and humidifier are able to perform better. You end up with less heat stacking, better humidity control,
