What is one way to improve indoor air quality when using gas appliances?

Ensuring proper ventilation is essential for improving indoor air quality when using gas appliances. Gas appliances release combustion by-products, including carbon monoxide, nitrogen dioxide, and other volatile organic compounds into the indoor environment. Adequate ventilation helps to dilute these harmful gases and allows fresh outdoor air to enter the indoor space. This not only helps to reduce the concentration of pollutants but also aids in maintaining a more stable oxygen level within the home, promoting a healthier living environment.

In contrast, using air fresheners may mask unpleasant odors but does not address the root problem of poor air quality caused by gas appliances. Lowering the thermostat setting can save energy but does not impact air quality directly. Sealing off unused rooms could potentially limit the air circulation needed for effective ventilation, leading to a buildup of harmful gases in the areas where appliances are used. Thus, proper ventilation stands out as the most effective way to enhance indoor air quality in this context.