{"product_id":"aerostar-merv-11-air-filter-20x22x1-box-of-12","title":"20 x 22 1\/4 x 1 AC and Furnace Air Filter - MERV 11 Box of 12","description":"\u003cp\u003eIn this review the reviewer looks at the 20 x 22 1\/4 x 1 AC and furnace air filter by Aerostar, a boxed pack of 12 designed for homeowners who want better indoor air quality without frequent filter changes. The bottom line: this MERV 11 pleated filter is for people who need reliable removal of microscopic particles and want a cost-effective multi-month replacement cycle. Its electrostatically charged synthetic media captures allergens between 1 - 10 microns, making it a practical choice for homes with allergy concerns and routine HVAC use.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMERV 11 filtration:\u003c\/strong\u003e Captures smaller particles including dust, pollen, and pet dander for noticeably cleaner indoor air.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePleated electrostatic media:\u003c\/strong\u003e The charged synthetic material draws and traps allergens between 1 - 10 microns for improved efficiency over flat filters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBox of 12:\u003c\/strong\u003e A year-plus supply for many homes that reduces the hassle of frequent purchases and ensures consistent protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComparable ratings:\u003c\/strong\u003e Designed to perform similarly to MPR 1000-1200 and FPR 7, giving users a familiar benchmark for effectiveness.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduces HVAC strain:\u003c\/strong\u003e By removing dirt and particles, the filter helps keep the furnace and air conditioner cleaner and can reduce motor wear.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis product is best for homeowners with central HVAC systems who want a balance of particle removal and long service life; the recommended change frequency of 60-90 days makes it suitable for average households, families with mild allergies, and pet owners who need to manage dander. The pack of 12 provides convenience and value for those who prefer to change filters seasonally rather than monthly.\u003c\/p\u003e\n\u003cp\u003eThose who need HEPA-level filtration for severe asthma or extreme sensitivity should look elsewhere, since this is a MERV 11 pleated filter rather than a true HEPA unit. Also, users with unusually dusty environments or heavy shedding pets may need to change filters more frequently than the suggested interval.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEffective capture of lint, dust mites, pollen, spores, pet dander, and smoke thanks to MERV 11 media.\u003c\/li\u003e\n\u003cli\u003eElectrostatically charged synthetic pleats increase particle attraction without added weight or bulk.\u003c\/li\u003e\n\u003cli\u003eBox of 12 is cost-efficient and convenient for scheduled replacements over many months.\u003c\/li\u003e\n\u003cli\u003eMade in the USA, which may matter to buyers preferring domestic manufacturing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNot a HEPA filter, so it will not match hospital-grade particle removal for severe allergy or medical needs.\u003c\/li\u003e\n\u003cli\u003eActual thickness is 3\/4 in (nominal labeled as 1 in), which requires compatible filter slots and careful measurement before purchase.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct name\u003c\/td\u003e\n\u003ctd\u003e20 x 22 1\/4 x 1 AC and Furnace Air Filter, Box of 12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAerostar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal size\u003c\/td\u003e\n\u003ctd\u003e20 x 22 1\/4 x 1 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eActual size\u003c\/td\u003e\n\u003ctd\u003e19 7\/8 x 22 1\/4 x 3\/4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFiltration rating\u003c\/td\u003e\n\u003ctd\u003eMERV 11 (comparable to MPR 1000-1200, FPR 7)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMedia\u003c\/td\u003e\n\u003ctd\u003ePleated electrostatically charged synthetic material\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChange frequency\u003c\/td\u003e\n\u003ctd\u003e60-90 days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Aerostar 20 x 22 1\/4 x 1 MERV 11 filter is a practical choice for most households that want better than basic filtration without moving to HEPA. The pleated electrostatic media and a box of 12 deliver solid value and convenient long-term replacement intervals, making it a sensible buy for families, pet owners, and allergy-conscious homeowners who use central HVAC systems.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHow often should I change this filter?\u003c\/strong\u003e\u003cbr\u003eChange every 60-90 days under normal household conditions; change more often in dusty homes or with heavy pet shedding.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill this fit my furnace slot?\u003c\/strong\u003e\u003cbr\u003eCheck the actual size 19 7\/8 x 22 1\/4 x 3\/4 in to confirm your filter slot accepts a nominal 1 in filter before purchasing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this equivalent to HEPA?\u003c\/strong\u003e\u003cbr\u003eNo; it is MERV 11 and effective for common allergens but not a medical-grade HEPA filter for extreme sensitivities.\u003c\/p\u003e","brand":"Aerostar","offers":[{"title":"Default Title","offer_id":46696245330139,"sku":"B01LY3F656","price":107.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/91qB4J-1hQL._AC_SL1500.jpg?v=1745129494","url":"https:\/\/gearmusthave.com\/products\/aerostar-merv-11-air-filter-20x22x1-box-of-12","provider":"GearMustHave","version":"1.0","type":"link"}