What is one method to improve indoor air quality in HVAC systems?

What is one method to improve indoor air quality in HVAC systems?

• A. Regularly change filters
• B. Decreasing airflow
• C. Reducing ventilation rates
• D. Increasing thermostat settings

Answer: (A)

Regularly changing filters is a crucial method for improving indoor air quality in HVAC systems. Filters are designed to capture dust, pollen, allergens, and other particulates that can affect the air quality inside a building. Over time, filters become clogged with these contaminants, which not only reduces their effectiveness but can also lead to a decrease in airflow and increased strain on the HVAC system. This can result in poorer air quality as harmful particles may begin to circulate through the system unfiltered. Maintaining clean filters helps ensure that the air being circulated is as free from pollutants as possible, which contributes to a healthier and more comfortable indoor environment. This practice is essential for promoting better respiratory health for occupants, particularly those with allergies or respiratory conditions. In contrast, options that involve decreasing airflow, reducing ventilation rates, or increasing thermostat settings can negatively impact indoor air quality, as they may limit the amount of fresh air entering the space or allow indoor pollutants to accumulate, creating an unhealthy environment.

Regularly changing filters is a crucial method for improving indoor air quality in HVAC systems. Filters are designed to capture dust, pollen, allergens, and other particulates that can affect the air quality inside a building. Over time, filters become clogged with these contaminants, which not only reduces their effectiveness but can also lead to a decrease in airflow and increased strain on the HVAC system. This can result in poorer air quality as harmful particles may begin to circulate through the system unfiltered.

Maintaining clean filters helps ensure that the air being circulated is as free from pollutants as possible, which contributes to a healthier and more comfortable indoor environment. This practice is essential for promoting better respiratory health for occupants, particularly those with allergies or respiratory conditions.

In contrast, options that involve decreasing airflow, reducing ventilation rates, or increasing thermostat settings can negatively impact indoor air quality, as they may limit the amount of fresh air entering the space or allow indoor pollutants to accumulate, creating an unhealthy environment.