Q. Should I Install Mechanical Ventilation with Spray Foam?
A. Yes. In general it is recommended that some sort of mechanical ventilation be installed to maintain a controlled exchange of fresh air into and out of the house. The most desirable method in our climate zone is to install an HRV (heat recovery ventilator). These systems extract the energy from the air leaving the house and diffuse it into the air entering the house, thereby eliminating much of the energy penalty associated with ventilation. Another reason HRV’s outperform traditional exhaust fans is because it controls the exact location of air exhaust and air intake. Basic exhaust fans depressurize the house, forcing air infiltration through all sorts of unwanted points of penetration, potentially leading to condensation problems. Popular makers of HRV’s include Fantech, Venmar, Broan, and Lennox.

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