The majority of homes are not airtight. There is enough air flowing from the doors, windows and openings. Air pressure and flow can be affected by any combustible appliance (i.e. furnace, gas dryer) or ventilation unit (i.e. bathroom fan, attic fan). We therefore recommend that the WAVE ventilation be installed at least 10 ft. away from any furnace in order not to interfere with the air flow. In an extreme airtight situation and in conjunction with other high capacity ventilation and combustion appliances, we have a passive fresh air ventilator kit ASV 90-4. It requires a 4″ hole to the outdoors that delivers filtered air to a room and is equipped with a manual damper.
Posted in: Ventilation