Another key component to green building is the periodic introduction of fresh air into the living space. There are several ways to do this, but I chose the Honeywell fresh air circulation unit for my new green home near Lexington,SC. It has several dials that your rater sets up for you based on your home's tightness, and other characteristics. The knobs adjust for cfms required, the number of bedrooms, and total home square footage. We ran a duct from the outside through the unit and into a shared supply for my two air units. The wiring hooks up to the HVAC air handler unit upstairs where the bedrooms are. Now the correct amout of fresh air is metered into the residence. Other things that are important are those energy star bath fans we talked about earlier, and a good range hood that vents to the outside.
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