{"title":"MERV 11 — Allergy \u0026 Pet Season","description":"\u003cp\u003eMERV 11 is the right step up from baseline when you have pets, mild allergies, or you've noticed fine dust building up on horizontal surfaces between weekly cleans. Captures everything MERV 8 captures, plus fine pet dander, mold spores, and finer pollen — particles down to about 1 micron.\u003c\/p\u003e\u003cp\u003eSame 1-inch slot as our MERV 8 line, so no install changes if you're upgrading. Small bump in static pressure vs MERV 8 — fine for any home built since approximately 1995. Recommended replacement cadence: every 60 days for pet households, 90 days otherwise.\u003c\/p\u003e\u003cp\u003eLearn more: \u003ca href=\"\/blogs\/learn\/best-air-filters-pet-homes-2026\"\u003eBest Air Filters for Pet Homes\u003c\/a\u003e · \u003ca href=\"\/pages\/merv-guide\"\u003eMERV Guide\u003c\/a\u003e\u003c\/p\u003e","products":[{"product_id":"16x25x1-merv-11-4pack","title":"ApexPuri 16×25×1 MERV 11 Air Filter · Allergy + Pet 4-Pack","description":"\u003csection class=\"apex-pdp\"\u003e\n  \u003ch2\u003eWhy MERV 11 for 16×25×1?\u003c\/h2\u003e\n  \u003cp\u003e\u003cem\u003ePet households, allergy season, sensitive sleepers, and homes that want a step up without compromising HVAC airflow. The right upgrade if MERV 8 isn't quite holding the dust line.\u003c\/em\u003e\u003c\/p\u003e\n  \u003col\u003e\n    \u003cli\u003e\u003cstrong\u003eCaptures everything MERV 8 captures, plus fine pet dander, mold spores, and finer pollen — particles down to about 1 micron.\u003c\/strong\u003e\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSame slot as MERV 8.\u003c\/strong\u003e Actual 15½ × 24½ × ¾ in — no install changes if you're upgrading from our MERV 8 in this size.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eReinforced beverage-board frame.\u003c\/strong\u003e Higher MERV doesn't change frame quality — still ~30% thicker than typical cardboard.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eThe particle band where pet-allergy and seasonal-allergy symptoms originate.\u003c\/strong\u003e MERV 11 captures dust, lint, pollen, fine dander (1–3 microns), mold spores, and the smaller fraction of household dust.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAirflow tradeoff:\u003c\/strong\u003e Small increase in static pressure vs MERV 8 — fine for any home built since ~1995.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNot a substitute for HEPA in a sealed room\u003c\/strong\u003e, but it's the sweet spot for whole-home HVAC because it balances finer capture with normal airflow.\u003c\/li\u003e\n  \u003c\/ol\u003e\n\n  \u003ch2\u003eThree ways customers use MERV 11.\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePet households.\u003c\/strong\u003e Two cats, one shedder. MERV 8 wasn't keeping up with dander. MERV 11 at 60-day cadence finally drops the dust on the coffee table.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAllergy seasons.\u003c\/strong\u003e Install 2 weeks before local pollen peak. Mornings feel less stuffy within the first week. Step back to MERV 8 in fall if winter is dry.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMild asthma households.\u003c\/strong\u003e Capturing the 1–3 micron band reduces airborne triggers. For severe asthma, consider MERV 13 with HVAC verification.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eSpecifications\u003c\/h2\u003e\n  \u003ctable\u003e\n    \u003ctr\u003e\n\u003cth\u003eNominal size\u003c\/th\u003e\n\u003ctd\u003e16×25×1 in\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eActual size (verified)\u003c\/th\u003e\n\u003ctd\u003e\u003cstrong\u003e15.50 × 24.50 × 0.75 in\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eMERV rating\u003c\/th\u003e\n\u003ctd\u003eMERV 11\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eEquivalent retail tier\u003c\/th\u003e\n\u003ctd\u003e~MPR 1000–1200 · FPR 7\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCapture range\u003c\/th\u003e\n\u003ctd\u003eParticles 1–10 microns: dust, lint, pollen, pet dander, mold spores\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003ePressure drop (clean)\u003c\/th\u003e\n\u003ctd\u003e~0.10 in. w.g. — small increase vs MERV 8\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eMedia\u003c\/th\u003e\n\u003ctd\u003eElectrostatic pleated synthetic, denser pleat count vs MERV 8\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eFrame\u003c\/th\u003e\n\u003ctd\u003eReinforced beverage-board, double-fold corners\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eRecommended life\u003c\/th\u003e\n\u003ctd\u003e~60 days for pet\/allergy homes; 90 days for general use\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003ePack quantity\u003c\/th\u003e\n\u003ctd\u003e4 filters\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003ctd\u003eAP-16-25-1-M11-4\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eHVAC compatibility\u003c\/th\u003e\n\u003ctd\u003eCompatible with virtually all residential HVAC built since ~1995\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\n  \u003ch2\u003eMERV 11 FAQ\u003c\/h2\u003e\n  \u003cdetails open\u003e\u003csummary\u003e\u003cstrong\u003eWhen should I upgrade from MERV 8 to MERV 11?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eWhen you have one or more pets, anyone in the household has mild seasonal allergies, or you notice fine dust building up on horizontal surfaces between weekly cleans despite a MERV 8 in the slot.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eWill MERV 11 strain my HVAC?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eFor homes built since approximately 1995 with adequately sized ducts, no. The static pressure increase from MERV 8 to MERV 11 is small enough that most blowers don't notice. If you have an older system, monitor for longer run times for the first 2 weeks.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eShould I keep MERV 11 year-round or just during allergy season?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eEither works. Year-round is simpler logistics. Seasonal (MERV 11 spring + fall, MERV 8 winter) is slightly cheaper. Pet households should run MERV 11 year-round since dander load is constant.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eDoes MERV 11 eliminate pet dander completely?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eNot completely — dander also lives on surfaces, bedding, and clothes. MERV 11 substantially reduces airborne dander; combine with weekly bedding wash and HEPA vacuum for the full picture.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eIs MERV 11 the same as HEPA?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eNo. HEPA filters are MERV 17+ and capture 99.97% of 0.3-micron particles, but they require dedicated air handlers (most home HVAC blowers can't push enough air through HEPA). MERV 11 is the upper middle of residential pleated capture.\u003c\/p\u003e\u003c\/details\u003e\n\n  \u003cp\u003e\u003ca href=\"\/blogs\/learn\/best-air-filters-pet-homes-2026\"\u003e→ Best Air Filters for Pet Homes\u003c\/a\u003e · \u003ca href=\"\/pages\/merv-guide\"\u003e→ Open MERV Guide\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/section\u003e","brand":"ApexPuri","offers":[{"title":"Default Title","offer_id":51852131205252,"sku":"AP-16-25-1-M11-4","price":33.73,"currency_code":"USD","in_stock":false}]},{"product_id":"20x20x1-merv-11-4pack","title":"ApexPuri 20×20×1 Pleated Air Filter — MERV 11 (4-Pack)","description":"\u003cp\u003eMERV 11 upgrade path for common 20×20×1 returns—pets, pollen, and finer household dust. Actual ~19.5×19.5×0.75 in. 4-pack.\u003c\/p\u003e","brand":"ApexPuri","offers":[{"title":"Default Title","offer_id":51852131401860,"sku":"AP-20-20-1-M11-4","price":30.96,"currency_code":"USD","in_stock":false}]},{"product_id":"20x25x1-merv-11-4pack","title":"ApexPuri 20×25×1 Pleated Air Filter — MERV 11 (4-Pack)","description":"\u003cp\u003eMERV 11 for large 20×25×1 returns when allergy load increases. Actual ~19.5×24.5×0.75 in typical. 4-pack.\u003c\/p\u003e","brand":"ApexPuri","offers":[{"title":"Default Title","offer_id":51852131500164,"sku":"AP-20-25-1-M11-4","price":38.96,"currency_code":"USD","in_stock":false}]}],"url":"https:\/\/apexpuri.com\/collections\/merv-11.oembed","provider":"APEX PURI","version":"1.0","type":"link"}