Understanding Variable Speed Fans

If you have been shopping for a new HVAC system for your home, you probably know that there are many confusing options and features on most new HVAC systems.  The good news is that most of these features help increase the efficiency of your HVAC system and reduce operating costs.  One feature commonly found on many of today’s energy efficient heat pumps, furnaces and air conditioning systems is a variable speed fan.

A variable speed fan is sometimes referred to as a variable speed blower.  Not matter what nomenclature the manufacturer gives it, the purpose of the fan or blower is to circulate the heated or cooled air through your home.

Variable speed fans are primarily designed to increase the energy efficiency of the system.  Unlike a traditional fan that operates at the same speed under all conditions, a variable speed fan runs faster or slower depending the demand for warm or cool air.  When the demand is low, the fan will run at a slower speed and reduce energy consumption.

A variable speed fan has other advantages as well.  Some homeowners prefer to set the fun to run all the time, continuously circulating the air in the home.  The home is more evenly heated and cooled and the furnace filter can do a better job of removing airborne contaminants.

If you are one of these homeowners, an HVAC system equipped with a variable speed fan is an excellent choice.  When running in continuous mode, the fan will run quietly and use far less energy than a traditional fan.

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