What Furnace Filter To Buy 100%

A high-end MERV 13 filter that is clogged with dust is worse for your air—and your energy bill—than a clean MERV 8. Experts at Guardian Technologies recommend replacing filters every , or as often as every 30 days during peak heating/cooling seasons or if you have multiple pets.

: 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 what furnace filter to buy

: MERV 8 is the sweet spot for most households. It provides solid filtration without stressing the motor . A high-end MERV 13 filter that is clogged

The first step is checking your current filter for its (e.g., 20x25x1), which is printed on the side. which is printed on the side.