What | Furnace Filter To Buy

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

: The cheapest option, designed mainly to protect your furnace from large debris. They do very little for indoor air quality. LJ Rolls considers these "basic protection" only. 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 : MERV 13 is excellent for asthma but

Different materials offer varying levels of filtration and durability. LJ Rolls considers these "basic protection" only

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

Choosing the right furnace filter involves balancing air quality needs with your HVAC system’s mechanical limits. The "best" filter is the one that captures the most contaminants without overworking your furnace’s motor. 1. Find Your Physical Size

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