HVAC fans are integral components of heating, ventilating and air conditioning systems. They are used to draw and circulate air into a particular area of a building. With the utilization of these system fans, it is possible to move large volume of air to either heat or cool an entire space within the parameters of the HVAC system. They can be wall mounted like the ventilation unit, ceiling mounted like the plenum fans or used as ducted system component. HVAC fans offer one directional air flow powered by an electric motor.
HVAC fans are divided into four types, namely; axial fans, centrifugal fans, power ventilators and air curtains. Axial fans are propeller fan sort that are usually referred as ceiling fans in construction, where air passes straight through. Centrifugal fans, also known as “utility’” fans, are common in mechanical units that support air distribution. Power ventilators function by removing air as well as heat and moisture from a room. Air curtains are designed as stand-alone mechanisms that produce an air wall separating two spaces.
Choosing HVAC Fans
When purchasing an HVAC fan, be sure that you pick one that is just the right size for your system as correctly sized HVAC fans can be energy saving. With the reduced energy requirement, you can have much smaller and efficient equipment that fits your home’s energy needs, thus decreasing your energy costs. In terms of comfort, big sized HVAC fans provide too much air using large amount of energy. Not only does the HVAC system wastes energy, it can also compromise occupants’ thermal comfort due to increased humidity.
To know the right hvac fan size for your home, contact an HVAC contractor. The job involves calculations of several factors, which is best left to these professionals.