How Are HVAC Ducts Installed?

Mar 31, 2021 | HVAC Ducts

Air ducts are vital components of the HVAC system. They allow the flow of cold or warm air to all areas of a home, helping in ventilation. Therefore, it’s important to know how to install HVAC ducts so you understand the steps professionals like Shriver Mechanical take to put together your HVAC systems.

To help you out, we’ve curated this short guide where we discuss how to install HVAC ducts and how to find the right HVAC contractor for the job.

Process of Installing HVAC ducts

The installation of ductwork in a new home can take approximately one or two days. It’s crucial to set aside the right amount of time to fit into your construction project and understand the steps involved.

Step 1: Design and Planning

Designing and planning involve mapping out the design of your HVAC system. A plan should cover the pathway, vents location, the returns, and time needed to cool each room in the house. Also, account for all the materials and the right ductwork size.

Step 2: Installation of Plenum

The plenum is a compartment that’s responsible for the collection of air from the AC unit or furnace. It’s also where the primary trunk lines will stem from.

Step 3: Installation of Main trunk Line

The trunk line is the primary line of air distribution from the plenum extending the complete length of the house. Don’t forget to install a cap to stop the air at the end of the line.

Step 4: Installation of Branch Runs

Just like the name implies, branch runs are branches of the AC system, which allow the movement of air from the main trunk line into the other rooms and spaces in a house.  Primarily, they originate from the main trunk and run all the way to the pre-planned vents.

Step 5: Installation of Returns

Since you’re introducing air into the room, it’s only wise to install a way you can extract air from it. Returns vents and pipes make this possible.

As such, a room experiences proper air circulation. The number of returns installed depends on the structure of the house and the area where air might collect.

Tips for finding a contractor that will make installation of HVAC ducts easy

Although it is possible to install HVAC ducts on your own, there are so many variables involved. And without the proper skill and knowledge of AC systems or help from experienced professionals, installing your own duct might end up costing you more than you expected.  Your best bet is to hire an HVAC contractor to make sure the job gets done right.

Here’s a list of tips to help you find the best HVAC contractor:


Use the internet to find reliable local HVAC companies in your area. Jot down the name of potential companies and call Better Business Bureau to check their reputation.

Seek referrals

You may consult a friend or family member who has had a positive experience with an HVAC contractor in your area. A good friend will surely want you to have the same experience.

Go Through Online Reviews

Read online reviews from trusted sites like Google Reviews and see what other customers are saying about an HVAC company.

Check for professional standards

A reliable contractor will always have professional standards. Visit a company’s office or shop and learn how long the company has been in business and if it plans to remain in business for the coming years.

Call References

Reliable companies are more than willing to provide you with customer references. Call the customer and ask how their experience with the contractor was. Check other details like time of completion and budget.

Ask for Certifications

HVAC companies must have a license or certificate to do business. So, ensure you ask for verification before hiring them. Their technicians also should have gone through specialized training for HVAC installation, repair, and maintenance.

Ask for a written estimate

While you may enjoy verbal contact, it’s better to have details in writing. Any reputable contractor will gladly accept to provide you with a written estimate or bid that they adhere to. The estimate should cover the things to be done and the price.


If you’re looking to install HVAC ducts in your house or repair existing ducts, seek the help of reputable HVAC contractors. We recommend Shriver Mechanical, which has highly trained staff that can handle any HVAC project to your satisfaction. You can call Shriver at 770-975-1927.