What Furnace Filter To Buy [QUICK – VERSION]

Different materials offer varying levels of filtration and durability.

: If you use a 1-inch filter in a slot designed for 4-inch filters, it will leak air and bypass filtration. Filterbuy notes that incorrect thickness can degrade air quality and strain your system. what furnace filter to buy

The Minimum Efficiency Reporting Value (MERV) tells you how well a filter traps particles. MERV Rating Large particles (lint, dust) Protecting the furnace motor only. MERV 5–8 Mold spores, hair, pet dander Standard homes with no pets or allergies. MERV 11–13 Smoke, bacteria, smog Homes with pets, smokers, or allergy sufferers. MERV 14–16 Viruses, fine tobacco smoke Highly sensitive individuals or clinics. 3. Choose Your Filter Material Different materials offer varying levels of filtration and

: MERV 8 is the sweet spot for most households. It provides solid filtration without stressing the motor . The Minimum Efficiency Reporting Value (MERV) tells you

: Made of polyester or cotton folds. These have more surface area, allowing them to trap more particles without instantly clogging.

: MERV 11 is recommended for multi-pet homes or those with seasonal allergies, as it captures finer dander and pollen.

: MERV 13 is excellent for asthma but should be checked for compatibility with your HVAC system’s airflow requirements. Expert Maintenance Tip