Dr. Allison Bailes, author of the Energy Vanguard blog joins the show to talk about air return ducts.

They talk about heating and air conditioning systems. Allison discusses that the most affected are the bedroom and it's important to have a return air pathway to help with better airflow. He then talks about having central return and dedicated return pathways and how to set these systems up. According to him, common methods include door undercuts and transfer grills.

Allison also shares about Manual J., a protocol for doing calculations to find the heating and cooling load on the house in the summer and winter. They further talk about the proper sizing of these systems for homes.

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