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How Ductwork Design And Installation Affects Energy Savings

Updated on November 18, 2013

One of the biggest contributing factors to energy savings in your home, is the configuration and quality of installation of the ductwork design. The duct work is a series of tubes designed following manual "d" guidelines, usually made of sheet metal or fiberglass, hidden within walls, ceiling and floors of your home that disperse conditioned air throughout. Poor ductwork design will greatly effect your energy savings. Another major energy saving factor of properly installed duct work is insulation and how well sealed the ducts are.

Just as important as the ducts that deliver the heat or A/C throughout your home, are the return ducts. These ducts are placed in key locations and are what allow your furnace to breath. They supply air to your furnace, that is to be heated or cooled.

Custom duct design

A properly designed duct work system is engineered specifically for your home. Starting with your homes' blueprints, an engineer calculates the total amount of air flow that is required to efficiently condition the air in each room of your home per ACCA manual "j" guidelines. Key information about your homes heat and A/C systems, such as heat gain and loss, as well as the amount of BTUs that your furnace produces and room size are vital in calculating the correct CFM (Cubic Feet per Minute) of airflow, so that the duct work can be properly designed to deliver comfort and efficiency.

HVAC branches

Another factor contributing to the efficiency of your ductwork design, is the number and size of the “branches” that make up your duct system, as well as their layout. Ducts with too narrow of a diameter won't deliver the correct air flow required to properly heat or cool a room. It is important to keep as many ducts of the same diameter stemming from the source as possible to allow maximum efficiency and air flow to each room.


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