63 - Ventilation - It's the 2nd letter in the acronym HVAC!

And yet, in homes, whole-house ventilation is a "brand-new" concept in much of our industry. The boys go through all the whole-house ventilation systems citing pros and cons and their own experiences with different systems in their projects across the board.

Pete's resource: Energy Vanguard, Allison Bailes - https://www.energyvanguard.com

Christoff Irwin with Positive Energy
https://positiveenergy.pro/