When it comes to air filters, the size of a 20x20x4 air filter is comparable to the MPR rating of 600 to 800 or the FPR rating of 5 to 6.Changing these filters regularly is essential for keeping your air conditioning system in good condition. Not only does it eliminate common contaminants such as dust, pollen, lint, and mold, but it also improves filtration efficiency to remove smoke, smog, coughing and sneezing particles, and pet dander. Many homeowners wonder how often they should change their 20x20x4 oven filter or 20x20x4 air filter. If you or a family member suffer from allergies, you should invest in a 20x20x4 air filter with a MERV rating of between 11 and 13 to alleviate symptoms.
This rating will effectively remove particles that cause allergies and allow you to breathe comfortably. For home use, you should select a filter with a MERV rating of 8 to 13. Air filters of this level are mainly used in facilities where airborne contaminants need to be removed, such as hospitals and laboratories. With this classification, air filters effectively capture and remove a wide variety of particles, including bacteria, smoke, and some viruses. A general rule of thumb is that air filters should be changed every 30 days when using low-cost fiberglass filters. MERV 14 mini-pleated air filters capture 90 to 95% of particles between 3 and 10 microns in size (such as dusting aids and cement dust), 85 to 90% of particles between 1 and 3 microns (lead dust, humidifier dust, charcoal dust, and nebulizer droplets), and 50 to 75% of particles between 0.30 and 1 micron in size (most fumes, sneeze nuclei, insecticide dust, copier and talc) facial).Periodic replacements of household air filters can prevent costly repairs or system replacements in the future.
When you buy a Filter King filter, you can be sure that you're getting the best 20x20x4 air filter in the industry.