A new Colorado School of Public Health study says that people living in drafty homes have increased rates of respiratory illness. The study looked at the impact of high air exchange rates on respiratory health among low-income residents. “Air exchange” refers to leaks that allow indoor air to escape and outdoor air to enter a home. Researchers found that drafty homes promoted a higher incidence of chronic coughs, asthma and asthma-like illnesses.
The researchers also found that the rate of air exchange directly correlated to the incidence of respiratory illness. The draftier the home, the more likely its inhabitants were to develop chronic breathing problems. One possible explanation for the results is that poor weatherization in older homes could trap industrial pollutants indoors.
The researchers suggest that weatherization efforts directed toward lower-income homes could produce a double benefit. In addition to lowering heating and cooling costs, air sealing older homes could also reduce healthcare costs in urban areas. Researchers also said that improving energy efficiency in homes near major roads could yield similar results. Improving indoor air quality is important, since Americans spend approximately 21.5 hours per day indoors.
Improving your home’s energy efficiency
One obvious benefit of improving your home’s energy efficiency is lowered heating and cooling costs. By sealing leaks around foundations, windows and doors, you can minimize the exchange of indoor and outdoor air. By keeping your heated or cooled air in place, you can reduce the amount of energy needed to make your home comfortable. You can also help control the moisture content of your home’s air.
Your home does require some ventilation! Without proper ventilation, moisture and “indoor pollutants” like smoke particles can hang around your home. Over time, this can lead to poor air quality, and can promote mold and mildew growth. If you’re serious about sealing your home, it’s best to work with an efficiency professional. One standard test is called a blower-door test. This measures the amount of air your home exchanges with the outside. If your home exchanges too much air, you’re wasting energy on heating and cooling. If your home exchanges too little air, you could experience problems like mold and mildew.
One option to reduce air exchange is to heat and cool with a ductless air-source heat pump. Because these devices don’t rely on a blower motor, they don’t affect the air exchange rate like a furnace can. More heated (or cooled) air stays in your home, making your home more efficient.
If you’d like more information about ductless heating and cooling options, please contact us at Boston Standard Plumbing and Heating at (617) 288-2911. We’ll be happy to discuss energy efficient options for your home.
Photo Credit: Clean Energy Economy For The Region, via Flickr