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“your body filters Merv 8, do you want to just protect your furnace? merv 4, or allow your body to take a break? Merv 11-12... higher Merv will make your furnace work harder, so consider changing them more frequently.” Reddit · r/homeowners

(2 pack) Filtrete 14x18x1 Hvac Furnace Air Filter, MPR 1500 Merv 12, Allergen, Bacteria and Virus, 1 Filter Go to product viewer dialog for this item. Filtrete 1" 1500 MPR Allergen Go to product viewer dialog for this item. Nordic Pure Tru Mini Pleat Merv 11 Air Filters Walmart - Nordic Pure Inc Go to product viewer dialog for this item. buy ac filters online

Shoppers often debate whether higher MERV ratings are worth the potential strain on older systems. “your body filters Merv 8, do you want

“A MERV 11 filter is the most popular choice for residential homes. This type of filter can remove most harmful contaminants from a home environment...” Lowe's higher Merv will make your furnace work harder,