As your furnace intakes air, it’s liable to pick up dust, pet hair and dander, pollen, and other respiratory irritants. Without a filter in place, the furnace would recirculate these contaminants, decreasing the air quality throughout your home. If you’re trying to choose the right filter for your home, you’ll have several options. The guide below explains how they differ so you can pick the right one.

4 Common Furnace Filter Options

1. Electrostatic Air Cleaner

This type of filter uses metal mesh grids that generate a positive electrostatic charge, attracting dust and other contaminants. These filters can be washed without any reduction in efficiency. However, they have more upfront costs, as your furnace technician must install a special unit that houses the electrostatic mesh and gives it a charge.

2. Fiberglass

Fiberglass filters are the most common type of furnace filter and are held within a cardboard frame. While they’re the most cost-effective option in the short-term, they also tend to be less efficient at removing small particles, which can have a negative impact on air quality and household members with respiratory issues. Additionally, the cost of these filters can add up over time.

3. Allergy Filters

Also made of fiberglass, these filters are pleated to allow better airflow, and they’re better at removing small particles like pollen and fine dust. They’re more expensive than traditional fiberglass options, but they’re critical for improving air quality for sensitive family members.

4. HEPA

Short for High-Efficiency Particulate Air, these filters are used in hospitals because they’re helpful at removing contaminants from the air. However, in a residential system, a filter this thick can reduce airflow to a sluggish crawl and cause your system to underperform. Consult your HVAC contractor if you have extremely sensitive allergies or a weakened immune system so they can help you find a HEPA filter compatible with your furnace.

If you need help with your furnace installation, turn to the team at Gary’s Repair & Burner Service. With more than 30 years of experience serving Ester, AK, they’re skilled at repairing and replacing furnaces and boilers. Learn more about their services online, and call (907) 474-0736 to speak to a representative.