{"product_id":"thermostat-wire-18-8-250-feet-cl2-solid-copper-heat-pump","title":"Thermostat Wire 18\/8 250 Feet CL2 Solid Copper Heat Pump","description":"\u003cdiv class=\"product-content\"\u003e\n  \u003cdiv class=\"product-description\"\u003e\n    \u003ch2\u003eThermostat Wire 18\/8 250 Feet CL2 Solid Copper Heat Pump\u003c\/h2\u003e\n    \u003cp\u003eThermostat Wire 18\/8 250 Feet CL2 Solid Copper Heat Pump — solid copper thermostat cable for connecting your thermostat to the furnace or air handler. 8-conductor wire handles heat pump systems with auxiliary heat.\u003c\/p\u003e\n    \u003ch3\u003eKey Features\u003c\/h3\u003e\n    \u003cul\u003e\n\u003cli\u003eSolid copper conductors for reliable signal transmission\u003c\/li\u003e\n\u003cli\u003eCL2-rated for in-wall installation per NEC code\u003c\/li\u003e\n\u003cli\u003e8 conductors — enough for heat pump + aux heat + humidifier\u003c\/li\u003e\n\u003cli\u003e250-foot spool — enough for most residential runs\u003c\/li\u003e\n\u003c\/ul\u003e\n    \u003ch3\u003eSpecifications\u003c\/h3\u003e\n    \u003cul\u003e\n\u003cli\u003eGauge: 18 AWG\u003c\/li\u003e\n\u003cli\u003eConductors: 8\u003c\/li\u003e\n\u003cli\u003eLength: 250 feet\u003c\/li\u003e\n\u003cli\u003eRating: CL2 (in-wall rated)\u003c\/li\u003e\n\u003cli\u003eMaterial: Solid copper\u003c\/li\u003e\n\u003c\/ul\u003e\n    \u003ch3\u003eWhat's Included\u003c\/h3\u003e\n    \u003cul\u003e\u003cli\u003eThermostat Wire 18\/8 250 Feet CL2 Solid Copper Heat Pump\u003c\/li\u003e\u003c\/ul\u003e\n    \u003cp\u003e\u003cstrong\u003eShips same-day\u003c\/strong\u003e from our Houston warehouse on orders placed before 3PM CST.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"product-faq\"\u003e\n    \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n    \u003cdiv class=\"faq-item\"\u003e\n\u003ch4\u003eHow many conductors do I need?\u003c\/h4\u003e\n\u003cp\u003e2-wire for heat only. 4-wire for basic heat\/cool. 5-wire for heat\/cool with common wire (needed for smart thermostats). 8-wire for heat pumps with auxiliary heat. When in doubt, run more conductors than you think you need.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch4\u003eCan I use this wire for a smart thermostat like Nest or Ecobee?\u003c\/h4\u003e\n\u003cp\u003eYes, but smart thermostats require a \"C\" (common) wire, so you need at least 5 conductors (18\/5). If you currently have 18\/4, you may need to upgrade the wire.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch4\u003eIs this rated for in-wall installation?\u003c\/h4\u003e\n\u003cp\u003eYes, CL2-rated wire is approved for permanent in-wall installation per the National Electrical Code.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003ch4\u003eWhat is the maximum run length?\u003c\/h4\u003e\n\u003cp\u003e18 AWG thermostat wire can run up to about 250 feet without voltage drop issues. For runs over 200 feet, consider using 16 AWG wire.\u003c\/p\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"National HVAC Parts","offers":[{"title":"Default Title","offer_id":63004088795507,"sku":"NHVAC-THER-TL0IAH","price":79.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/7195gvRviuL._AC_SL1500_325712d5-1de2-4e82-a2af-0b5694418eed.jpg?v=1781918157","url":"https:\/\/nationalhvacparts.com\/products\/thermostat-wire-18-8-250-feet-cl2-solid-copper-heat-pump","provider":"National HVAC Parts","version":"1.0","type":"link"}