What is a frequently recommended way to improve HVAC efficiency?

Regularly cleaning and replacing air filters is a highly recommended method for improving HVAC efficiency. Clean air filters allow for better airflow throughout the system, which is crucial for optimal performance. When filters are clogged with dust and debris, they restrict airflow, making the HVAC system work harder to cool or heat a space. This increased workload can lead to higher energy consumption, increased wear and tear on the equipment, and potentially shorten the lifespan of the system.

Maintaining clean filters not only enhances the efficiency of the system but also helps improve indoor air quality by reducing allergens and pollutants circulated within the home. Moreover, it can prevent system breakdowns, ultimately leading to lower repair costs and a more comfortable living environment.

In contrast, lowering thermostat settings continuously may lead to unnecessary energy use, and increasing ductwork size without proper assessment could create imbalances in the HVAC system. Lastly, while using more insulation can improve energy efficiency in some situations, it does not address the crucial role that clean filters play in maintaining system efficiency and performance.