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How to Install Return Air Duct in Wall

The return air ducts help balance the airflow at your place and are found in the HVAC system. Down below we are going to show you how to install return air duct in wall, how it functions and the benefits it brings to your homestead. 

The return ducts bring cooled or warmed air to your air conditioner unit or furnace. In terms of how cool your home should be, it is very important that you know how to install return air duct in wall, at your place. 

If the airflow at your place is circular, airtight and efficient, this will prevent your AC unit from overworking hence the energy bills are reduced and the house is cooled efficiently.

Down below we have given you the tips on how you can successfully install the air ducts at your place and how the correct size can be calculated and installing the air ducts by yourself without scheduling a call with a HVAC technician or professional.

How to Install Return Air Duct in Wall

In case this is your first time to set up the air ducts at your place, we have provided you with a step-by-step method on how to successfully install the air ducts.

Location of the air ducts

You should be able to locate the best place to install the duct system. In our case, we will install the duct system on the wall. You should make a hole slightly lower on your drywall where you have decided to place the air ducts. 

In case you are making return registers for your current place, it is important that you don’t cut electrical wires or any pipes in your wall when making the holes. You should be able to make small holes that will able to fit the air ducts. 

Through the holes, you should ensure the holes find their way through your wall into the empty space at the basement ceiling. Repeat the steps mentioned above until you satisfy the number of holes you want. At least have one for every room at your place except the bathroom.


Locate all the holes you made in the basement and using the first hole, install the return ducts panning back to the location of your furnace. Ensure that you nail in the panning to the ceiling’s bottom. You should ensure the panning fits well at the hole in the farthest point, and bend it and attach it to your floor to fill up the space. 

You should stop panning at a similar spot by your furnace. You should be able to cut and make holes while panning, in a perpendicular line to the ceiling joists. This will ensure that air will come from your panning to the air ducts of which will be undergoing heating at the furnace.

Enclose the ductwork

You should install the air ducts in a perpendicular manner to the furnace’s joists. This is to ensure that all holes are covered up during panning. You should cut similar holes in the duct’s top that match all the holes used during panning. 

This ensures that air gets inside of your air ducts. As you are well aware, the ducts are connected together by the use of drive cleats and s-slips. They must be installed tightly to the ceiling’s bottom so as to create tight seals during panning. 

You can also insulate the duct system with a duct wrap faced using foil, in order to ensure that your duct system is energy efficient. This will ensure that heat loss or gain is prevented as air through the air duct passes. You should also secure your ducts using galvanized straps to the joists at the ceiling.

Add the return ducts to your furnace

In order to add the new duct system to your furnace, you should be able to make a hole at the duct’s bottom, next to your furnace. You should then attach a duct that will connect to your furnace. 

You should then make a hole at the furnace’s side of which matches the filter rack size. From the bottom of the duct, you should be in a good position to create connections as you cut the filter rack attaching it to your furnace. Ensure that the duct fits properly.

Install the air filters

You should then install the air filters present in the HVAC system to the filter rack. Ensure that you caulk all the seams and joints of the ductwork by use of high-quality silicone caulk for the best energy efficiency and performance. This is a crucial step on how to install return air duct in wall and should not be skipped in order to avoid problems.

Install the register covers

You should be in a good position to screw all the registers over all the holes you cut earlier. After a proper installment of the register covers in the duct system, you are good to go as your ductwork is complete and ready to function.

Keep the duct system clean

As we have already discussed above, you can clearly see the importance of having air ducts installed at your place and how it contributes to the heating process in your system. As you are well aware, the return ducts should not be installed in the kitchens or bathrooms as the moisture and odors from the mentioned rooms will circulate throughout your ductwork system. 

This shows that keeping your ducts clean always is a good thing for you and your family back at your place. Dirty return ducts will cause your heating system model to circulate debris and dirt throughout your place, which could lead to many problems including respiratory issues.

How to Install Return Air Duct in Wall – Conclusion

As of now, you are already aware of how to install return air duct in wall and some of the benefits it brings to your lovely home. 

In case you are not sure of how you can successfully install the ducts at your place, it is better that you schedule a call with a qualified HVAC professional or technician that will assist you in installing the air duct system. Proper air duct installation and regular maintenance mean that you and your family are safe and comfortable at your place.

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