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Are There Different Types of Air Ducts? 
Air ducts are one of the most important components of a home’s HVAC system. These metal tunnels push cool or warm air through the home’s vents to distribute the treated air throughout the house. It works alongside the air conditioner’s evaporator coils, condenser, and thermostat to regulate temperature. 
Every structure needs a customized air duct system, whether a home or commercial building. The best duct types for a structure depend on the structure’s square footage, layout, and energy consumption. After all, air ducts aren’t one-size-fits-all deals. The perfect air duct system for a residence could consist of a combination of a few types of air ducts. Continue reading to learn about the most common types of air ducts and the deciding factors of which to use. 
These Factors Determine the Right Air Duct System 
When installing, replacing, or repairing an air duct system, one should consider: 

House size: A professional will first measure a home’s square footage before installing new ductwork. They will consider its height, width, and square footage. 
How many BTUs the air conditioner uses: BTUs (or British Thermal Units) measure how much energy is needed to remove heat from the house. Bigger homes need systems with more BTUs. 
Duct materials: Different types of air ducts can have different materials that they’re made from. These materials each have qualities that should be considered, like a material that helps avoid mold growth. 

Homeowners shouldn’t do any guesswork when determining what type of ductwork meets their home’s needs. To save time, money, and frustration, they should consult a professional about their home’s system. 
What Types of Air Ducts Are There? 
ductsSome common types of air ducts include: 

Flexible air ducts: These are long, cylindrical tubes usually made of a thin metal or plastic. True to the name, flexible ductwork fits into all types of spaces, making it perfect for tight spots. However, it’s prone to rips and tears because of the exterior’s thinness. 
Sheet metal ducts: These are the most common type of air ducts, and for a good reason. Because of its metal composition, it’s difficult for mold to grow on the surface. They also last longer than other ducts. 
Fiberglass-lined air ducts: These ducts are more common in commercial buildings. They are insulated with fiberglass for maximum efficiency. However, these materials can break down over time and compromise a building’s indoor air quality. 
Fiberboard air ducts: Fiberboard air ducts are insulated on the inside and prevent the fiberglass in them from passing through the home’s vents due to its construction. 

Common air duct materials include metal, fiberglass, resin, and inorganic materials. They are generally low-maintenance and last for many years. 
Which Air Duct Is Best? 
ductsThe best air ducts for one’s home still depend on the factors listed earlier, including layout and square footage. However, sheet metal air ducts are the most commonly recommended because they: 

Help prevent mold growth 
Promote good indoor air quality 
Regulate the home’s temperature 

Sheet metal air ducts are more popular than fiberglass-lined ones because they don’t impact health by breaking down like fiberglass-lined air ducts can. Homeowners should consult a qualified technician for more information about their air ducts.  

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