Won’t sealing my house lead to indoor air quality problems?

Most house design professionals will advise you to seal the house structure as tight as possible and provide the necessary ventilation through the heating and air conditioning system. Many systems employ an “air exchanger” which is designed to pre-condition (either warm or cool) the incoming outside air with the outgoing exhaust air. In this manner, you can build an extremely energy efficient exterior shell using spray polyurethane foam while still providing controlled and energy efficient ventilation. Advanced Energy Insulation offers an excellent Energy Recovery Ventilator (ERV) made by Panasonic. SEE SPECS on Panasonic ERV.