{"product_id":"oem-lennox-air-filter-71w20","title":"OEM Lennox Air Filter — 71W20","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e71W20\u003c\/strong\u003e filter traps dust, pollen, lint, and airborne particles before they reach the blower, coil, and heat exchanger of your Lennox system. Beyond improving indoor air quality, it protects internal components from debris buildup that reduces airflow and efficiency, making it an essential part of routine Lennox maintenance.\u003c\/p\u003e\u003cp\u003eA clogged or overdue \u003cstrong\u003e71W20\u003c\/strong\u003e filter restricts airflow and can cause weak heating or cooling, longer run times, higher energy bills, a frozen evaporator coil, or nuisance shutdowns from an overheating system. Visible dust around vents and worsening allergies are common signs the filter needs replacing.\u003c\/p\u003e\u003cp\u003eUsing the OEM Lennox \u003cstrong\u003e71W20\u003c\/strong\u003e ensures the correct dimensions, MERV rating, and airflow characteristics your equipment was engineered for. Ill-fitting aftermarket filters can bypass air around the edges or over-restrict flow, undermining performance and comfort. Keep genuine Lennox filters on hand and replace regularly to maintain clean air and peak system efficiency.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081089237363,"sku":"LNX-71W20","price":19.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-air-filter-71w20","provider":"National HVAC Parts","version":"1.0","type":"link"}