In this video, Dave is showing us how to install the HVAC Return Air Duct Vent. The purpose of the Return Air Duct Vent is to take the air in to the furnance to heat or cool it then blow it back out to the rest of the house. So, with sufficient venting, the air flow improves and the HVAC unit would run more efficiently.
In our home, we have one vent opened. After talking to the HVAC professionals, they suggested to put one more in to maximize efficiency. Another great DIY Project for Dave! Here are some high level steps:
1. Measure the location for the vent. Make sure to use a level ruler to ensure a straight line.