{"product_id":"oem-lennox-valve-expansion-21l87","title":"OEM Lennox Valve-Expansion — 21L87","description":"\u003cp\u003eThe \u003cstrong\u003eLennox 21L87\u003c\/strong\u003e is a genuine OEM expansion valve that meters refrigerant flow into the evaporator coil to maintain efficient heat exchange in Lennox HVAC systems. When this valve fails, you may notice symptoms like warm air output, short cycling, or frost buildup on the evaporator — all signs that refrigerant flow is no longer being properly regulated. Installing this authentic Lennox replacement valve ensures a factory-spec fit and restores full system performance.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081024717171,"sku":"LNX-21L87","price":59.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-valve-expansion-21l87","provider":"National HVAC Parts","version":"1.0","type":"link"}