What Furnace Filter To Buy May 2026

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

: The "nominal" size is a rounded number for marketing; the "actual" size is slightly smaller to ensure a snug fit. 2. Understand MERV Ratings what furnace filter to buy

: The "gold standard," trapping 99.97% of particles down to 0.3 microns. Warning : Most residential systems cannot handle a HEPA filter's air restriction without professional modifications. 4. Tailor to Your Household : Made of polyester or cotton folds

: MERV 13 is excellent for asthma but should be checked for compatibility with your HVAC system’s airflow requirements. Expert Maintenance Tip MERV 14–16 Viruses

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

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

: The "nominal" size is a rounded number for marketing; the "actual" size is slightly smaller to ensure a snug fit. 2. Understand MERV Ratings

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