It’s interesting that installing an ERV system (energy recovery ventilation) in the home wasn't mentioned. These are devices that bring in fresh air from outsi

It’s interesting that installing an ERV system (energy recovery ventilation) in the home wasn't mentioned. These are devices that bring in fresh air from outside but retain much of the inside temperature. Many things in the home offgas harmful chemicals or particulates. Continually cycling the air is a good way to reduce the amount you are breathing, especially in highly efficient homes that are close to air tight.