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.

How To Wire A 2 and 3 Prong Plug With Ease

DIYs these days are in full swing because of two advantages. Firstly, it helps people manage everyday household troubles themselves; secondly, it saves heaps of money. One of the most common trouble is electrical routes and consequent appliance damage. This blog will discuss how to wire a plug with ease and safety.

However, no matter how safe it may seem, we recommend involving an electrical contractor for this service since electricity is hazardous, which may result in fatality. If you are searching for a competent and reliable contractor for your project, why don’t you give On Point Contracting a call for help?

How to Safely Wire a Plug

Wiring plug connections is pretty easy; however, connecting the hot and neutral wires with the proper prongs is crucial. Miswired plugs pose a severe shock risk that may lead to a fire.

There are two types of plugs to work with:

  1. 2 prongs
  2. 3 prongs

How to Wire a 2 Prong Plug

You will need the following items:

  • A 2 prong plug
  • Wire strippers
  • A screwdriver
  • Utility knife

Step 1

Always disconnect the plug from the outlet before starting to wire it.

Step 2

Cut the old plug from the power cord with a utility knife. If you do not have one, wire strippers can do the job too. You can strip the wire easily with the help of a needle nose plier, grab and twist the cord and lay it between the wire stripper to split it.

Step 3

Time to wire the 2 prong plug. The cord side, which has ridges, goes with the broader prong, whereas the smooth area towards the narrow one. A silver screw is used for the former, while gold is best for the latter prong.

Step 4

Once done, close the cover, tighten its screw, and you’re done!

Wiring a 3 Prong Plug

The items needed and the first two steps for wiring a 3-prong electrical plug are the same as that of a 2-prong plug.

Step 1

Remove the wire or your plug from the power outlet.

Step 2

Cut the old plug from the power cord with a utility knife.

Step 3

Remove insulation from the power cord in this step. Carefully cut, do not go too deep to avoid a short circuit.

Step 4

Strip the wires apart to insert them in the plug, which has a strip gauge to guide how much insulation should be removed.

Step 5

The insulation is removed easily with the help of wire strippers; twist and pull.

Step 6

It is time for wiring. The plug has 3 kinds of screws; silver, green, and gold. While the power cord has white, green, and black wire. The white wire goes with silver, green and green together, whereas black wire connects with a gold screw.

Step 7

Secure them together, and voila! You have your plug ready.


Wiring a plug is pretty easy, and you can do it without assistance at home. We hope that this information will help you in the future. Still, we urge you to connect with a professional from On Point Contracting for your needs. Playing with electricity is no joke, as the results can be fatal.

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