Indoor air quality (IAQ) is among the top health concerns for U.S. households. External influences, such as ambient air pollution from vehicles and factories, are significant. Internal influences, such as the household products and furnishings you choose, must also be considered. Let’s explore six factors that can undermine the IAQ in your home.
1. Inadequate Ventilation
Without some form of air purification, your home will be plagued by as much air pollution inside as outside and possibly more. Some level of natural ventilation will always allow pollutants to access your home, and in many cases, indoor pollution will be worse because the concentration of pollutants inside will be higher than outside.
Consider that, in the summer, you keep your home sealed tight. You rely on your AC for cooling as it circulates air in the home. The only ventilation is often passive, such as through the attic. The solution to this issue is a whole-house fan, which can draw fresh air into the home. Some advanced ventilation systems can even be operated throughout the winter.
2. Ductwork Air Leakage
Central HVAC systems use ducts to distribute conditioned air throughout a home. Over time, ducts can develop leaks due to worn seals and punctures. The Department of Energy estimates that air leakage in older ducts can be as high as 40%, affecting comfort, energy efficiency, and also IAQ.
As conditioned air escapes, outside air replaces it. This incoming air often contains pollutants and may be humid or dry, depending on the season. Duct sealing is an effective way to minimize air leakage caused by worn seals. If more serious issues arise, you may need duct repairs or even full duct replacement.
3. High or Low Relative Humidity
Relative humidity (RH) affects how comfortable you feel. It can also negatively impact IAQ. When humidity is too high, the air is more prone to pollutants, including mold and dust mite debris. Additionally, when the air is too humid or too dry, it can irritate and even inflame your respiratory system, including your nose, throat, and lungs.
The Environmental Protection Agency recommends maintaining an RH between 30% and 60%. If you have trouble maintaining a sufficiently high RH in winter, installing humidification control to your HVAC system will help. A humidifier will add moisture to the air. If you have difficulty keeping RH low in summer, a dehumidifier will help by removing moisture from the air.
4. Excessive Dust
Dust is an obvious allergen, but many people don’t realize how serious it can be. Dust can absorb other pollutants, such as gases and chemicals, and carry them back into the home. Good dusting habits are essential for controlling indoor air pollution. Deep dust your entire home at least once a week.
Opt for professional grooming or wash and brush pets outdoors if possible. You should also schedule a duct camera inspection every other year. Dust can build up in ducts. The average household will need professional duct cleaning every three to five years.
5. Gases and Airborne Chemicals
Many people inadvertently add potentially harmful gases and chemicals to the air. Take care to store solvents and similar materials outside the home. Even storing them in a connected garage poses a potential risk. Pay attention to the household products you use.
Avoid chemical deodorizers and select natural household cleaners whenever possible. Be aware that some furniture and furnishings can off-gas volatile organic compounds into the home for an extended period.
6. Poor HVAC Maintenance
While your HVAC system won’t cause poor IAQ, it can exacerbate existing problems. Schedule seasonal tune-ups to ensure your equipment is clean, including cooling maintenance in the spring and heating maintenance in the fall.
Choose a premium HVAC filter with the highest MERV rating that your system allows. The higher the MERV rating, the better the filtration. Check the filter at least once a month and replace it before it clogs and restricts airflow.
Professional IAQ Solutions in Gambrills
JJ Heating & Cooling Company is an HVAC company located in Gambrills, MD, serving the surrounding areas. We employ NATE-certified HVAC technicians who perform our IAQ services. Our team conducts IAQ testing and installs, cleans, seals, and repairs ductwork.
Our company also cleans dryer vents and insulates chimneys. We install and service smart thermostats, whole-house fans, air purification systems, humidifiers, and dehumidifiers. Contact us today to learn more about our many IAQ products and services.
