{"product_id":"thermostat-wire-18-5-18-gauge-5-conductor-100ft-durable-hvac-control","title":"Thermostat Wire 18\/5 18 Gauge 5 Conductor 100ft - Durable HVAC Control","description":"\u003cp\u003eOur review of this 18-5 thermostat wire finds it a practical, no-nonsense choice for installers and DIYers who need a reliable run for thermostats and low-voltage control circuits. The single biggest reason to buy is durability paired with correct construction: the 18 gauge, five-conductor cable arrives color-coded, ETL complied and UL listed as Type CL2, which makes it suitable for typical heating and A\/C thermostat wiring and other signal applications. It is straightforward to work with, resists moisture and sunlight thanks to a PVC jacket, and comes in a full 100 ft length that matches expectations for home and small commercial runs.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e18 AWG 5 conductor:\u003c\/strong\u003e The 18 gauge construction provides expected strength and flexibility for thermostat and low-voltage control connections without excess bulk.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUL Listed Type CL2:\u003c\/strong\u003e UL 13 and CL2 ratings plus NEC Article 725 compliance mean the cable meets common safety standards for in-wall and control use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature rated:\u003c\/strong\u003e Rated from -20C to +60C so the cable handles typical indoor and some mildly exposed environments without performance loss.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePVC outer jacket:\u003c\/strong\u003e The brown polyvinyl chloride jacket resists heat, moisture and sunlight, which helps protect runs in basements, attics or short exposed sections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor-coded insulation:\u003c\/strong\u003e Individually color-coded conductors simplify termination and reduce installation errors when connecting thermostats, control panels or annunciators.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThis cable is best for HVAC technicians, electrical contractors and homeowners doing thermostat replacements or new installations where a 5-conductor run is required for power, fan, heat\/cool calling and common wiring for smart thermostats. The 100 ft spool suits most single-zone residential jobs and short multi-zone runs where a single cable will reach from the furnace or air handler to the thermostat location.\u003c\/p\u003e\u003cp\u003eThose who need ultra-flexible cable for frequent movement, very long commercial runs beyond 100 ft, or exotic temperature ratings outside -20C to +60C should look at specialty wiring or thicker gauge conductors. For basic low-voltage signal and control use, though, this cable covers the majority of household needs.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eWell-made 18 gauge conductors that are easy to strip and crimp, making installation fast.\u003c\/li\u003e\n\u003cli\u003eMeets UL 13 and CL2 standards with ETL compliance for confidence in safety and code compatibility.\u003c\/li\u003e\n\u003cli\u003eDurable PVC jacket that resists heat, moisture and sunlight for reliable service life.\u003c\/li\u003e\n\u003cli\u003eColor-coded insulation and full 100 ft length provide clear, ready-to-use runs and good value.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eThe brown jacket is practical but may be less discreet in light-colored interiors compared with white or beige options.\u003c\/li\u003e\n\u003cli\u003e100 ft may be insufficient for some larger or multi-room commercial layouts, requiring multiple spools.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable type\u003c\/td\u003e\n\u003ctd\u003eThermostat cable, 18-5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConductor gauge\u003c\/td\u003e\n\u003ctd\u003e18 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConductors\u003c\/td\u003e\n\u003ctd\u003e5 conductor, color-coded insulation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e100 ft (30 meter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature rating\u003c\/td\u003e\n\u003ctd\u003e-20C to +60C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage rating\u003c\/td\u003e\n\u003ctd\u003e150 Volt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJacket\u003c\/td\u003e\n\u003ctd\u003eBrown PVC outer jacket\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThis 18-5 thermostat wire is a solid, value-oriented choice for residential HVAC and low-voltage control wiring. It combines correct 18 AWG construction, required UL and NEC approvals, and a durable PVC jacket in a convenient 100 ft spool, so contractors and homeowners replacing thermostats or installing smart controls get reliable performance without fuss.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eIs this cable suitable for in-wall thermostat runs?\u003c\/strong\u003e\u003cbr\u003eYes, it is UL listed Type CL2 and meets NEC Article 725 requirements for many in-wall low-voltage thermostat installations.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan this wire be used outdoors?\u003c\/strong\u003e\u003cbr\u003eThe PVC jacket resists moisture and sunlight for short exposed runs, but long-term external burial or constant outdoor exposure is not recommended.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it work with smart thermostats that need a C wire?\u003c\/strong\u003e\u003cbr\u003eYes, the 5-conductor layout includes a conductor that can be used as the common C wire for smart thermostat installations.\u003c\/p\u003e","brand":"Cableague","offers":[{"title":"Default Title","offer_id":48675016048859,"sku":"B08P6W9SXL","price":45.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61L1OTcHz3S._SL1500.jpg?v=1778691918","url":"https:\/\/gearmusthave.com\/products\/thermostat-wire-18-5-18-gauge-5-conductor-100ft-durable-hvac-control","provider":"GearMustHave","version":"1.0","type":"link"}