10 Components of The HVAC Duct System

10 Components of The HVAC Duct System

A duct system is necessary if one wants to set up an air conditioning system, especially in office spaces or other commercial buildings. An HVAC duct system is pretty complex and consists of many components that need to be installed under professional guidance for the whole network to run without disruption.

The first part of the entire process is selecting the pipeline. The duct material for the entire system is galvanized steel and aluminum. Former, galvanized steel is fairly a common choice to make ductwork of any shape or size. Aluminum is suitable when a pipe is lightweight needed; it is also easy and quick to install.


They are central collection and distribution components for the HVAC duct system. From multiple large size vents, the air moves towards a central air handler. It is then directed to a single large space or maybe to individual rooms/areas that need hot or cool air.


Takeoff is one of the components when it comes to a duct system; they are fittings that allow the correct portion to flow in the main duct that is to be diverted into every branch.
The shapes, either rectangular, oval, or round are easily accommodated. Moreover, the air is pumped mostly via a diffuser, grille, or register outlets.

Canvas Connector

This part helps minimize the loud noise and vibrations that the air handler generates. It is a rubbery, canvas-looking material inserted inside the duct before and after the air handler.


The coil is one of the parts in a duct system that either heats up or cools down the condition indoors via the air that flows; this is possible by drawing out heat and moisture.


Stack boots or heads are branches – vertical ducts which let the air flow out vertically within very thin walls. Other times, the stack is also known as a furnace in or wall stack.

Turning Vanes

Turning vane is one of the parts that fit inside ductwork where direction changes (e.g., at 90° angle turns. This helps minimize turbulence air flow resistance on the whole.


They easily connect two pipes of the entire duct system together.


A duct fitting can have two main functions: control of the air volume and smoke or fire detection. Air volume control dampers may or may not be automatic. At the same time, smoke & fire detectors seal all the ducts and shut them off the system.

Spiral Pipe

A spiral pipe is more like an extension of the round duct system. The spiral is a result of the coil made of metal fixed inside a rigid tube. There is a smooth interior that allows low friction loss and a grooved seam on the outside.


Zoning in the duct system is meant to divide a home or an office space into multiple regions that help in better control of the temperature and efficiency of the heating or cooling system.


A well-designed HVAC system is crucial for proper installation and efficient working. Why don’t you dial (832) 966-7000 and talk to one of the experts from On Point Contracting? We can surely come up with adequate solutions for your troubles.