AC ducts: Types and functions

AC ducts, a crucial component of an air conditioning system, allow the proper distribution of air and help maintain the air quality. Read on to know more about AC ducts types and functions.

AC ducts are an essential part of a home’s air conditioning system. They are responsible for distributing cool air throughout the house, creating a comfortable indoor environment. The ducts are typically made of metal or fibreglass and can be either flexible or rigid. Regular maintenance of these ducts is important for the longevity and efficiency of your air conditioning system, as well as the health and comfort of your family.

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Types of AC ducts

 

Flexible duct

Flexible air ducts are a popular choice for homes with limited space. They are made of a metal wire coil coated with a layer of flexible plastic and are equipped with thermal insulation made of glass wool or materials such as polyethylene or metallised PET. These ducts take the form of a cube and lack any elbows or offsets, making them a compact solution for air distribution. If you’re looking for an efficient way to cool your home without sacrificing space, flexible air ducts may be the answer.

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Rigid duct

Rigid ductwork is a versatile option for home air conditioning systems, offering a range of shapes, sizes, and materials to choose from. These ducts are hard, reliable, safe, and enduring, making them a dependable choice for homeowners. With the ability to be customised according to individual needs, rigid ductwork provides a tailored solution for air distribution in your home. Whether you’re looking for a specific shape or size or simply want a duct that will last for years, rigid ductwork is a great option to consider.

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The rigid variety offers a diverse range of options to choose from; some of them are:

 

Sheet metal ducts

When it comes to rigid ductwork, two popular materials are used for construction: galvanised steel and aluminium. Aluminium is the preferred choice due to its lightweight and ease of installation, but both materials offer benefits for your home’s air conditioning system. With a non-porous nature, both galvanised steel and aluminium restrict the growth of mould, ensuring a safe and clean indoor environment. By choosing rigid ductwork made of these materials, you can rest assured that your air ducts will be both durable and mould-resistant, making it a smart investment for your home.

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Fibreglass lined ducts 

Rigid ducts can be lined with fibreglass for added sound-dampening properties, making them a popular choice for commercial buildings and offices. However, fibreglass-lined ducts come with drawbacks. Over time, fibreglass can decompose and release small particles into the air, which can cause health problems such as asthma if inhaled over a long period of time. Additionally, fibreglass is spongy in nature and can promote the growth of mould and bacteria. Cleaning fibreglass-lined ducts can also be difficult, making it important to weigh the benefits against the risks before choosing this type of rigid ductwork.

 

Fiberboard ducts

Fiberboard air ducts are a popular choice for heating and cooling systems due to their insulation properties. They are made from compressed and resin-bonded fibreglass, which is then laminated with a foil sheet to protect against moisture. While fiberboard ducts may provide adequate insulation, they are not recommended for ventilation. Like fibreglass-lined air ducts, fiberboard air ducts are porous and can become a breeding ground for mould and bacteria, making it important to consider the potential health risks before choosing this type of ductwork.

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Functions of AC ducts

AC ducts are an essential component of an air conditioning system, serving several important functions:

 

  • Air distribution

AC ducts distribute cooled air from the air conditioning unit throughout the entire home, providing comfortable indoor temperatures.

  • Increased efficiency

Properly maintained ducts help ensure optimal performance of the air conditioning system, reducing energy waste and lowering utility bills.

  • Improved indoor air quality

Regular duct cleaning and maintenance can prevent the buildup of dust, decay, and other pollutants, which can negatively impact indoor air quality.

  • Increased comfort

By evenly distributing cooled air, AC ducts help maintain a consistent temperature in each room, improving overall comfort levels.

  • Extended lifespan of the AC system

Regular duct maintenance helps prolong the lifespan of the air conditioning system by preventing damage and ensuring optimal performance.

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FAQs

Why are AC ducts important?

AC ducts are important as they ensure proper airflow and distribution of conditioned air throughout a building, contributing to indoor air quality and comfort.

What are flexible AC ducts?

Flexible AC ducts are made of a metal wire coil covered in plastic and are often used in tight spaces.

What are rigid AC ducts?

Rigid AC ducts are made of materials such as galvanised steel or aluminium and come in a variety of shapes and sizes.

Got any questions or point of view on our article? We would love to hear from you. Write to our Editor-in-Chief Jhumur Ghosh at jhumur.ghosh1@housing.com
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