Anyone that has been around a campfire or charcoal grill knows that inhaling smoke hurts. It burns the lungs and airways. But have you thought about what it’s doing to your brain? We spend 90% of our life indoors. Chances are that without proper ventilation and a good air filter, your brain may not be getting what it needs to function at optimum capacity.
Apart from insulation, ventilation is an important element in a home's energy efficiency. Attic ventilation is usually not synonymous with lower cooling bills, but it should be. Many people simply choose not to concern themselves with attic vents and the many variations of them: rectangular, hooded, etc. One reason to think about ventilation, however, is a homeowner's comfort level; did we also mention reduced utility bills? Improving ventilation can surely lower energy costs by relieving excess strain on an air conditioning unit.