Keep Your Home Fresh and Clean: Furnace Filter Tips

Selecting the right air furnace filter is crucial for maintaining indoor air quality and the efficient operation of your HVAC system. To make an informed choice, start by identifying the filter size compatible with your furnace. The filter’s dimensions are usually printed on the existing filter or mentioned in your furnace’s user manual. It’s essential to ensure a proper fit to prevent air from bypassing the filter and to maximize filtration efficiency.

Next, consider the MERV (Minimum Efficiency Reporting Value) rating of the filter. MERV ratings typically range from 1 to 20, with higher numbers indicating better filtration capabilities. For most households, a filter with a MERV rating between 8 and 13 is sufficient to capture common pollutants like dust, pollen, and pet dander. However, if you have specific concerns such as allergies, or live in an area with high levels of pollutants, you may opt for a higher MERV rating. Keep in mind that higher MERV-rated filters can restrict airflow, so consult your HVAC system’s specifications to ensure it can handle the selected filter. Finally, consider the filter material. Fiberglass filters are affordable but offer limited filtration, whereas pleated or HEPA filters provide better air cleaning but come at a higher cost. Your choice should align with your air quality needs and budget, with a balance between efficiency and affordability.

In this video, Master Plumber William Frew walks you through it.