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HVAC Ducting

What is the Purpose of an HVAC System?

A Heating, Ventilation and Air Conditioning system, also known as HVAC system, removes contaminants in the air and conditions indoor air either cooling it or heating it to provide comfort. Air contains many pollutants. If you let it in to your home without purifying it, you or your family might end up getting sick. Having four different seasons also mean, that temperature can go from extreme cold to extreme hot. Having an air conditioning and heating system ensures that you can keep a comfortable temperature in your home no matter what the outside temperature is.


HVAC systems come in different sizes and designs. However, there are four basic features common to all HVAC system – air distribution system, air exhaust system, air handling unit and outside air intake. Some units contain a return system that helps return air conditioned air back to the air handling unit.

The air-handling unit draws air from the outside. It filters the air to remove allergens, mold and dust. It then heats or

Once the air conditioned air comes back, it is re-filtered, reconditioned and recirculated inside the room or building. This is done through ducts connected to the return system. The ducts connect to each room where air is drawn back to the air handling unit. Aside from ducted returns, plenary returns can also be used to draw air from rooms and into the negative pressure ceiling plenum. Air, however, is returned through ducts and structural conduits. Not all the air however is circulated back to the room or building. Some leave through the air exhaust system.


An HVAC system may appear like doing a simple job but the parts and the maintenance is more than simple. Do not leave your HVAC system in the hands of untrained technicians. Make sure to hire a NATE certified technician who know how to keep your HVAC system in good shape. First Class HVAC only employs skilled and well-experienced HVAC technicians to do the following services – Berlin heating maintenance, Dover heating maintenance, Bear heating replacement, Milton heating maintenance, Bear heating maintenance, Milford heating maintenance, Middletown heating maintenance, Fenwick heating services, Berlin heating services, Rehoboth heating services, Lewes heating services, Dover heating services, Bethany heating services, Milton heating services, Bear heating services and Milford heating services.

Contact us at Sussex (302) 804-1309, Kent (302) 213-8396, New Castle (302) 307-4530 or Maryland (410) 713-4099. You can also drop us an email via our online contact form. One of our NATE certified technicians will call you back and assist you with your HVAC repair or maintenance needs.

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