{"product_id":"lennox-el280df070e36ak-66-000-furnace","title":"Lennox EL280DF070E36AK 80% AFUE 66,000 BTU 14.5\" Two-Stage Downflow Gas Furnace","description":"\u003cp\u003eThe Lennox EL280DF070E36AK is an Elite Series two-stage gas furnace rated 66,000 BTU input and 52,000 BTU output on high fire at 80% AFUE. It comes in a 14.5-inch A cabinet, installs downflow, and has a constant torque blower sized for 1.5 to 3.5 tons of add-on cooling.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeating: 66,000 BTU input, 52,000 BTU output, 80% AFUE, two-stage, 43,000 BTU input on low fire\u003c\/li\u003e\n\u003cli\u003eCabinet: A size, 14.5 inches wide, downflow\u003c\/li\u003e\n\u003cli\u003eBlower: 1\/2 hp constant torque motor, 400 to 1,475 cfm, for 1.5 to 3.5 tons of cooling\u003c\/li\u003e\n\u003cli\u003eTemperature rise: 30 to 60°F on high fire, 20 to 50°F on low fire\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eEL is Lennox's Elite line, 2 means two-stage, 80 is the AFUE, and DF is downflow. 070 is the 66,000 BTU input, E is the high efficiency constant torque blower motor, 36 is the nominal add-on cooling size, A is the 14.5-inch cabinet, and K means the furnace is ready for Lennox refrigerant detection.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eDownflow coils with the same letter match the furnace's supply air opening, so you want a Lennox CK40DT coil with A in its size code.\u003c\/p\u003e\n\u003cp\u003eThe AHRI Directory lists this furnace in certified systems with CK40DT coils and Lennox ML13KC1 air conditioners, plus EL18KSLV heat pumps. Your efficiency rating depends on the exact outdoor unit, coil, and furnace together.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize the furnace from a Manual J load calculation. Filters and filter mounting aren't included, so plan for a filter rack.\u003c\/p\u003e\n\u003cp\u003eThis model doesn't carry the X low NOx code, and Lennox says this furnace series can't go in the South Coast and San Joaquin Valley air districts. It isn't certified for mobile homes, RVs, or outdoor installs.\u003c\/p\u003e\n\u003ch2\u003eWarranty and registration\u003c\/h2\u003e\n\u003cp\u003eHVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.\u003c\/p\u003e\n\u003ch2\u003eShipping and help\u003c\/h2\u003e\n\u003cp\u003eFree shipping on major equipment from our Kansas City warehouse to every state and D.C. except Alaska, Hawaii, Washington, Oregon, and Idaho, where you pay the shipping rate shown at checkout. Call (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":47627470831778,"sku":"EL280DF070E36AK","price":2550.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/download_fa9b5d2e-33f3-4ff0-bb60-c06f0575bf6e.jpg?v=1788738190","url":"https:\/\/hvacusa.store\/products\/lennox-el280df070e36ak-66-000-furnace","provider":"HVAC USA","version":"1.0","type":"link"}