{"title":"Lennox 2 Stage Air Conditioners","description":"\u003cdiv class=\"hvac-desc-lead\"\u003e\n\u003cp\u003eLennox two-stage central air conditioners from the Merit ML17KC2 line, from 2 to 5 tons (24,000 to 60,000 BTU).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hvac-desc-more\"\u003e\n\u003cp\u003eProduct pages list each size's rating, from 16 to 18 SEER2, and every unit uses R-454B refrigerant.\u003c\/p\u003e\n\u003ch2\u003eWhy two-stage cooling\u003c\/h2\u003e\n\u003cp\u003eA two-stage air conditioner runs on its low stage most of the time and switches to full output on the hottest days. That gives you longer, steadier cycles than a single-stage unit. For a simpler unit, see \u003ca href=\"\/collections\/lennox-single-stage-air-conditioners\"\u003eLennox single-stage air conditioners\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003ePair it with a \u003ca href=\"\/collections\/lennox-furnaces\"\u003eLennox furnace\u003c\/a\u003e and \u003ca href=\"\/collections\/lennox-evaporator-coils\"\u003eevaporator coil\u003c\/a\u003e, or a \u003ca href=\"\/collections\/lennox-air-handlers\"\u003eLennox air handler\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eCall (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. Free 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. Each product page shows whether an item qualifies. HVAC 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\u003c\/div\u003e","products":[{"product_id":"lennox-ml17kc2-024-230-24-000-air-conditioner","title":"Lennox ML17KC2-024-230 18 SEER2 24,000 BTU Two-Stage Air Conditioner","description":"\u003cp\u003eThe Lennox ML17KC2-024-230 is a 2 ton (24,000 BTU) Merit Series central air conditioner with a two-stage scroll compressor and R-454B refrigerant. Depending on the indoor match, it's AHRI-rated up to 18 SEER2.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eEfficiency: 14.3 to 17 SEER2 with the Lennox coils and air handlers we carry\u003c\/li\u003e\n\u003cli\u003eRefrigerant: R-454B, factory charged with 6 lb 4 oz for a 15-foot line set\u003c\/li\u003e\n\u003cli\u003eLine connections: 3\/8-inch liquid and 3\/4-inch suction, sweat\u003c\/li\u003e\n\u003cli\u003eSound rating: 75 dBA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eML is Lennox's Merit line, and 17 is the nominal SEER2 class for the ML17KC2 series. K is R-454B, C is an air conditioner, 2 is the two-stage compressor, 024 is 2 tons, and 230 is 208\/230V single-phase. The characters after 230 on the unit label are Lennox revision codes. The AHRI Directory lists it as ML17KC2-024-230A**.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eThe AHRI Directory lists this unit with Lennox CK40CT, CK40DT, CK40HT, and CK40UT coils on Lennox gas furnaces, and with CBK45UHET, CBK45UHPT, CBK45UHVT, and CBK47UHET air handlers. The best listed match with equipment we carry, a CK40CT-36C coil on an EL297UH070XV36B furnace, reaches 17 SEER2.\u003c\/p\u003e\n\u003cp\u003eR-454B systems need a refrigerant detection sensor at the indoor unit. Lennox installs it at the factory or in the field, so confirm your coil or air handler has one.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize it from a Manual J load calculation, and treat your old unit's tonnage as a starting point only. If you're keeping your indoor coil, check that it appears in an AHRI listing with this unit before you order.\u003c\/p\u003e\n\u003cp\u003eIt cools down to 45°F outdoor air without extra controls, and Lennox's optional low ambient kit takes it down to 30°F.\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":47627477450914,"sku":"ML17KC2-024-230","price":3185.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/ML17KC2-024-230.jpg?v=1788821906"},{"product_id":"lennox-ml17kc2-036-230-36-000-air-conditioner","title":"Lennox ML17KC2-036-230 17 SEER2 36,000 BTU Two-Stage Air Conditioner","description":"\u003cp\u003eThe Lennox ML17KC2-036-230 is a 3 ton (36,000 BTU) Merit Series central air conditioner with a two-stage scroll compressor and R-454B refrigerant. Depending on the indoor match, it's AHRI-rated up to 17 SEER2.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eEfficiency: 14.3 to 17 SEER2 with the Lennox coils and air handlers we carry\u003c\/li\u003e\n\u003cli\u003eRefrigerant: R-454B, factory charged with 6 lb 8 oz for a 15-foot line set\u003c\/li\u003e\n\u003cli\u003eLine connections: 3\/8-inch liquid and 7\/8-inch suction, sweat\u003c\/li\u003e\n\u003cli\u003eSound rating: 73 dBA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eML is Lennox's Merit line, and 17 is the nominal SEER2 class for the ML17KC2 series. K is R-454B, C is an air conditioner, 2 is the two-stage compressor, 036 is 3 tons, and 230 is 208\/230V single-phase. The characters after 230 on the unit label are Lennox revision codes. The AHRI Directory lists it as ML17KC2-036-230A**.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eThe AHRI Directory lists this unit with Lennox CK40CT, CK40DT, CK40HT, and CK40UT coils on Lennox gas furnaces, and with CBK45UHET, CBK45UHPT, CBK45UHVT, and CBK47UHET air handlers. The best listed match with equipment we carry, a CK40HT-51\/61C coil on an ML180UH110V60C furnace, reaches 17 SEER2.\u003c\/p\u003e\n\u003cp\u003eR-454B systems need a refrigerant detection sensor at the indoor unit. Lennox installs it at the factory or in the field, so confirm your coil or air handler has one.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize it from a Manual J load calculation, and treat your old unit's tonnage as a starting point only. If you're keeping your indoor coil, check that it appears in an AHRI listing with this unit before you order.\u003c\/p\u003e\n\u003cp\u003eIt cools down to 45°F outdoor air without extra controls, and Lennox's optional low ambient kit takes it down to 30°F.\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":47627477516450,"sku":"ML17KC2-036-230","price":3413.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/ML17KC2-036-230.jpg?v=1788821918"},{"product_id":"lennox-ml17kc2-048-230-48-000-air-conditioner","title":"Lennox ML17KC2-048-230 16 SEER2 48,000 BTU Two-Stage Air Conditioner","description":"\u003cp\u003eThe Lennox ML17KC2-048-230 is a 4 ton (48,000 BTU) Merit Series central air conditioner with a two-stage scroll compressor and R-454B refrigerant. Depending on the indoor match, it's AHRI-rated up to 16 SEER2.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eEfficiency: 13.8 to 16 SEER2 with the Lennox coils and air handlers we carry\u003c\/li\u003e\n\u003cli\u003eRefrigerant: R-454B, factory charged with 7 lb 14 oz for a 15-foot line set\u003c\/li\u003e\n\u003cli\u003eLine connections: 3\/8-inch liquid and 7\/8-inch suction, sweat\u003c\/li\u003e\n\u003cli\u003eSound rating: 74 dBA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eML is Lennox's Merit line, and 17 is the nominal SEER2 class for the ML17KC2 series. K is R-454B, C is an air conditioner, 2 is the two-stage compressor, 048 is 4 tons, and 230 is 208\/230V single-phase. The characters after 230 on the unit label are Lennox revision codes. The AHRI Directory lists it as ML17KC2-048-230A**.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eThe AHRI Directory lists this unit with Lennox CK40CT, CK40DT, CK40HT, and CK40UT coils on Lennox gas furnaces, and with CBK45UHET, CBK45UHPT, CBK45UHVT, and CBK47UHET air handlers. The best listed match with equipment we carry, a CK40HT-42B coil on an SL280UH090V36B furnace, reaches 16 SEER2.\u003c\/p\u003e\n\u003cp\u003eR-454B systems need a refrigerant detection sensor at the indoor unit. Lennox installs it at the factory or in the field, so confirm your coil or air handler has one.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize it from a Manual J load calculation, and treat your old unit's tonnage as a starting point only. If you're keeping your indoor coil, check that it appears in an AHRI listing with this unit before you order.\u003c\/p\u003e\n\u003cp\u003eIt cools down to 45°F outdoor air without extra controls, and Lennox's optional low ambient kit takes it down to 30°F.\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":47627477549218,"sku":"ML17KC2-048-230","price":3573.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/ML17KC2-048-230.jpg?v=1788821931"},{"product_id":"lennox-ml17kc2-060-230-60-000-air-conditioner","title":"Lennox ML17KC2-060-230 16 SEER2 60,000 BTU Two-Stage Air Conditioner","description":"\u003cp\u003eThe Lennox ML17KC2-060-230 is a 5 ton (60,000 BTU) Merit Series central air conditioner with a two-stage scroll compressor and R-454B refrigerant. Depending on the indoor match, it's AHRI-rated up to 16 SEER2.\u003c\/p\u003e\n\u003ch2\u003eKey specs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eEfficiency: 13.8 to 15.5 SEER2 with the Lennox coils and air handlers we carry\u003c\/li\u003e\n\u003cli\u003eRefrigerant: R-454B, factory charged with 9 lb 5 oz for a 15-foot line set\u003c\/li\u003e\n\u003cli\u003eLine connections: 3\/8-inch liquid and 1-1\/8-inch suction, sweat\u003c\/li\u003e\n\u003cli\u003eSound rating: 75 dBA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReading the model number\u003c\/h2\u003e\n\u003cp\u003eML is Lennox's Merit line, and 17 is the nominal SEER2 class for the ML17KC2 series. K is R-454B, C is an air conditioner, 2 is the two-stage compressor, 060 is 5 tons, and 230 is 208\/230V single-phase. The characters after 230 on the unit label are Lennox revision codes. The AHRI Directory lists it as ML17KC2-060-230A**.\u003c\/p\u003e\n\u003ch2\u003eWhat it pairs with\u003c\/h2\u003e\n\u003cp\u003eThe AHRI Directory lists this unit with Lennox CK40CT, CK40DT, CK40HT, and CK40UT coils on Lennox gas furnaces, and with CBK45UHET, CBK45UHVT, and CBK47UHET air handlers. The best listed match with equipment we carry, a CK40HT-51\/61C coil on an SL280UH090V60C furnace, reaches 15.5 SEER2.\u003c\/p\u003e\n\u003cp\u003eR-454B systems need a refrigerant detection sensor at the indoor unit. Lennox installs it at the factory or in the field, so confirm your coil or air handler has one.\u003c\/p\u003e\n\u003ch2\u003eSizing and fit\u003c\/h2\u003e\n\u003cp\u003eSize it from a Manual J load calculation, and treat your old unit's tonnage as a starting point only. If you're keeping your indoor coil, check that it appears in an AHRI listing with this unit before you order.\u003c\/p\u003e\n\u003cp\u003eIt cools down to 45°F outdoor air without extra controls, and Lennox's optional low ambient kit takes it down to 30°F.\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":47627477581986,"sku":"ML17KC2-060-230","price":4407.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3352\/5410\/files\/ML17KC2-060-230.jpg?v=1788821943"}],"url":"https:\/\/hvacusa.store\/collections\/lennox-2-stage-air-conditioners.oembed","provider":"HVAC USA","version":"1.0","type":"link"}