TechnologyHow Do Ducts Work in Any Given System?

How Do Ducts Work in Any Given System?

The duct is one of the frequently used construction materials while constructing life-supporting systems inside buildings. It is basically a conduit or a passage for the air within the building and out of the building. To use them in the best manner, DUCT takeoff services are a great option.

First more about ducts.


These are conduits for air to pass. Air plays an important role in our lives. We breathe in it. This breathing keeps us alive and maintains our health. Also, it manages the temperature around us and within us. We need to keep it in its appropriate place to keep it healthy.

To achieve this, we make certain arrangements and efforts such as ventilation. These arrangements and efforts manage the air quality, temperature, and composition to help us breathe and function.

Materials Used to Make them

Various materials are used to make ducts. All of these materials differ in terms of their quality, permeability, and cost. Also, they have favorable traits for different surroundings. Some of the frequent ones among them include:

Galvanized steel

This is the most commonly used material for the ducts. Zinc-coated steel proves long-term and rusting-free. 


These ducts are flexible and can be used to make round ducts. The material is also lightweight and this makes it even more useful. Sealant is used to join different parts of these ducts. Despite that, it is used less than the ducts made out of galvanized steel.


These too are lightweight and can be cut with a specially designed knife. These ducts provide the dual function of thermal insulation and soundproofing. The internal side works admirably for the thermal insulation while the outer side goes for the soundproofing effect. This particularly goes advantageous for HVAC systems. 


These ducts are manufactured with insulation placed in between the aluminum boards. The aluminum is used with a relatively minute thickness, while the phenolic foam is used for quite a significant amount. These provide both functions of passage and insulation.


These low-profiling ducts are used as an alternative to steel ducting. This alternative works for both cost concerns and space in the ceiling capacity. These however have not gained much usage in the ducting systems.

And others. 

Added Insulation

Although certain types of ducts come with insulation, additional insulation is also used. This is needed as the air need to be transported around or out as absolutely intact. A slight leak or penetration and the purpose is sabotaged.

Role of Ducts

Ducts are mainly installed to channel the air. This includes channeling within the building and out of it. Also, it helps with channeling the noise out of the building.

Ducts are used in different MEP systems in their own manner. These uses are:

For heating systems, the ducts can both take heated air and cold air around the building. That depends on the use and intent of the system. 

While in a ventilation system, the ducts provide the air passage to leave the building. The exhaust fan pushes the air and the duct makes sure that the air travel in the intended direction that is out of the building. Have HVAC estimating services to install the right ducts.

As the noise proofing. In case of heavy machinery, the surrounding gets too much noisy. Duct provides that noise passage and works as a silencer.


Ducts are important in today’s buildings. They are made out of different materials. The ducts made out of different materials vary in their ability, properties, dimensions, and costs. Next, some additional insulation is added to them. Afterward, they provide air and noise channeling in the building and out of it.

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