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How HVAC Drawings Improve your Duct Sizing & fabrication?

Ever wondered why HVAC drawings are used for duct sizes and fabrication? A duct system is basically an arrangement that shows the particular points in between where the air flows. HVAC drawings are used in a number of areas like architectural, mechanical, plumbing, and structural.

HVAC drawings have been significantly contributing to the engineering aspects in many ways. HVAC drawings are the popular technical drawing for duct fabrication. Relying on them the whole system is designed around. A well-designed HVAC system should deliver maximum interior comfort at the lowest operating cost while also preserving indoor air quality.

Ducts are pipes that carry air to and fro to the duct area of a building from the equipment like exhausts and air conditioners. The piping is basically the distribution of water through the inlets and outlets. The HVAC draftsman takes the responsibility of creating the system involved with all this. He ensures that there is no obstruction in the duct distribution passage and the pipings.

Duct sizing is a very tricky part of a building. Before the creation of the ducts, it is necessary to have proper measurements and details. A single fault would lead to disarrangement in the whole system. And for this, it is important to create the most precise HVAC fabrication drawings.

What is the need for HVAC drawings for duct sizing and fabrication?


  • Exact size
    It is very important to know the measurements of the whole space of ducting. The HVAC drawings give a clear idea about it so that no error arises while creating the ducts.


  • Proper design
    With the help of the HVAC fabrication drawings, the whole design of the duct can be looked at. Any design flaws can be corrected in the drawings themselves so while execution comes out to be perfect.


  • Better positioning
    In a building putting the ducts in the right area is necessary. The whole ventilation system depends on that. Through the drawing, a better understanding of the positioning can be formed.


  • Ease of fabrication
    The whole fabrication process becomes very simple by looking at the detailed HVAC drawings. According to the drawings, all the information is gained which is further used in the fabrication process.

Things to keep in mind while creating HVAC drawings:

  • The arrangements should be planned and created in a way that the installation of pipelines shouldn't cause problems. All the systems should be made with the close association.
  • The site infrastructure should be taken care of. There should be a way of putting duct pipes and other equipment in a place with less space.
  • The drawings should not contain any errors as they are going to act as a blueprint of the whole system. Hence, a single error can cause problems to the entire system.

With all thisScience Articles, we understand how important it is to have proper HVAC drawing in respect to the duct sizes especially. It simplifies the whole complex process and helps in better fabrication also. These are the reasons why having HVAC drawings is extremely needed in the project construction.

Source: Free Articles from


Chandresh Chudasama is working at Archdraw Outsourcing, a leading drafting, modeling and rendering company provides 2D Drafting, 3D Modeling, 3D Rendering in USA, UK, UAE, Canada, Europe and Australia. For more details

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