Proper Ventilation-con't

Last time we touched on what proper ventilation is. The recommendation is 25% outside air introduced into the home's comfort system. There are many ways to introduce fresh air into the home. Today we will give my home as an example. We have an older farm house built in 1876. Right now I do not have a central system installed as there are many remodeling projects going on in the home. We have baseboard electric heat (very inefficient) and window units for A/C (also very inefficient). For the mild weather we open windows (with screens) and because the home is built facing proper directions the cross ventilation is great! During the winter the home is closed during very cold periods and slow fans help move the heat. During the summer we run the window units with fans moving air to other rooms (noisy). In the evenings I turn the A/C off open windows at strategic points in the home and use box fans to pull air in and expel air out upstairs. We also have a solar attic fan to pull ventilation through the attic. This is a primative but cost effective way to move air, and it is comfortable for us. Next time we'll discuss the improved design for the system going in.