Positive Oressure Ventilation Reduce Attic Temp

The figures 1 to 2 psi on page 86 chapter 4 understanding positive pressure ventilation relate to the additional pressure a blower creates in the interior of a building.

Positive oressure ventilation reduce attic temp.

Ideal attic temperature and humidity settings. However with that understanding that creating negative pressure in the attic can cause all kinds of problems sucking out air from the conditioned space possible back drafting. Or break the performance of your heating and cooling systems and your attic ventilation. In existing homes the question is important.

However the effect may be beneficial in the context of decompensated heart failure where the decreased preload and afterload result in a return to a more productive part of the starling curve. I have advised him that generally speaking attic fans are a bad idea which he has come to terms with. The net effect in most situations is a decrease in cardiac output. My father is interested in removing heat from his attic to try to keep the upstairs of his house somewhat cooler.

If the home doesn t have ducts there still may be reasons a homeowner would want to reduce the attic temperature. Positive pressure ventilation affects preload afterload and ventricular compliance. In short effective attic ventilation also helps cool attic insulation. Again i m assuming that you re not considering a sealed attic lowering the temperature of an attic that contains ducts can reduce your air conditioning costs.