HVAC Heating, ventilation and air conditioning. Most homes in America are only getting the ventilation from the leakiness in the home, but if you're building a new house, you want to build a much tighter house and the ability to ventilate on your terms. Think about how long it takes to get uncomfortable in a turned off car. The same goes for your house. You need fresh air coming through.Risinger walks us through a ventilation method he's used for many years with the help of the FAS-6. The pipe provides measured fresh air so you can damper it and decide when you want it to come in. How it works the fresh air dampers remain closed until instructed to open by the healthy home system control (hhsc). It then opens to allow fresh air to be pulled into the return plenum where it is mixed with conditioned air, filtered, and distributed to the rest of the house. The fresh air damper (fad) is a motor driven damper activated by the healthy home system control. When there is a call for fresh air, the hhsc opens the damper allowing fresh air to enter the HVAC return. When the hhsc is satisfied," the damper is closed.Benefits a good rubber seal and a high-tech controller. Watch the video to see Risinger install this product. Learn about fresh air for new houses with the Field Controls FAS-6. For more informationField Controls FAS-6 http://amzn.to/2h5awFBHow it works http://bit.ly/2iwkrHT