{"title":"Thermostat Cable","description":"\u003cp\u003eShop thermostat cable for HVAC systems, thermostats, furnaces, air conditioners, heat pumps, boilers, zoning controls, ventilation systems, and low-voltage control applications. Our collection includes 18 AWG thermostat cable and 20 AWG thermostat cable designed for reliable communication between thermostats, HVAC equipment, control panels, sensors, and heating and cooling systems in residential and commercial installations.\u003c\/p\u003e","products":[{"product_id":"thermostat-wire-20-gauge-cable-20-awg-solid-bare-copper-cmr-pvc-brown","title":"Thermostat Wire 20AWG Solid Bare Copper CMR Brown – 2 5 6 8 Conductors","description":"\u003cp\u003eInstall thermostat and HVAC control wiring in walls and risers with this 20AWG solid bare copper thermostat wire, rated CMR \/ FT4 and C(ETL)US Listed for code-compliant permanent installations in residential and commercial buildings. The 20AWG gauge is ideal for systems with shorter runs or lower current requirements — a practical, cost-effective option when 18AWG is more than your system needs.\u003cbr\u003e\u003cbr\u003eAvailable in four conductor counts to match your system. The sunlight-resistant brown PVC jacket is the recognized industry standard color for thermostat wire, resistant to UV exposure, moisture, and temperature changes for both indoor and outdoor exposed runs. Color-coded conductors simplify wiring at every terminal. Each reel is clearly marked for easy identification on the job.\u003cbr\u003e\u003cbr\u003eC(ETL)US Listed · CMR \/ FT4 · CL2 \/ CL2R · Sunlight Resistant\u003cbr\u003e\u003cbr\u003eCommon Specifications (all variants):\u003cbr\u003e• Cable Type: Thermostat Wire, Riser (CMR)\u003cbr\u003e• Conductor: Solid Bare Copper, 20AWG\u003cbr\u003e• Insulation: Color-coded PVC\u003cbr\u003e• Jacket: CMR-rated PVC, Brown, Sunlight Resistant\u003cbr\u003e• Standards: CL2 \/ CL2R, CMR \/ FT4\u003cbr\u003e• Certifications: C(ETL)US Listed\u003cbr\u003e\u003cbr\u003eConductor variants, OD, and recommended applications:\u003cbr\u003e• 20\/2 (0.172 in. OD, 500ft) — White\/Red — Basic heating, doorbells, simple controls\u003cbr\u003e• 20\/5 (0.224 in. OD, 500ft or 250ft) — Blue\/Green\/White\/Red\/Yellow — Heat pumps, 5-wire systems\u003cbr\u003e• 20\/6 (0.191 in. OD, 250ft) — Blue\/Green\/White\/Red\/Yellow\/Brown — Multi-stage HVAC, emergency heat\u003cbr\u003e• 20\/8 (0.256 in. OD, 250ft) — 8 color-coded — Smart thermostats, zoned HVAC systems\u003cbr\u003e\u003cbr\u003eNote: For longer runs or high-current HVAC applications such as heat pump compressors, use 18AWG thermostat wire.\u003c\/p\u003e","brand":"Big-A-Cables","offers":[{"title":"2 Conductors \/ 500 Feet","offer_id":46005902835946,"sku":"4088-Big","price":74.99,"currency_code":"USD","in_stock":true},{"title":"5 Conductors \/ 250 Feet","offer_id":46005902868714,"sku":"4090-Big","price":81.99,"currency_code":"USD","in_stock":true},{"title":"5 Conductors \/ 500 Feet","offer_id":46005902901482,"sku":"4089-Big","price":141.99,"currency_code":"USD","in_stock":true},{"title":"6 Conductors \/ 250 Feet","offer_id":46005902934250,"sku":"4091-Big","price":95.99,"currency_code":"USD","in_stock":true},{"title":"8 Conductors \/ 250 Feet","offer_id":46005902967018,"sku":"4092-Big","price":117.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/6388\/8618\/files\/377386.jpg?v=1778278227"},{"product_id":"thermostat-wire-18-gauge-cable-18-awg-solid-bare-copper-cmr-pvc-brown","title":"Thermostat Wire 18AWG Solid Bare Copper CMR Brown – 2 3 4 5 8 Conductors","description":"\u003cp\u003eWire any thermostat or HVAC control system cleanly and reliably with this 18AWG solid bare copper thermostat wire, rated CMR \/ FT4 and C(ETL)US Listed for permanent in-wall and riser installations. Available in six conductor counts to match every system from a basic single-stage heater to a multi-stage smart thermostat or zoned heat pump installation.\u003cbr\u003e\u003cbr\u003eThe sunlight-resistant brown PVC jacket is the industry-standard jacket color for thermostat wire — easy to identify on the job and resistant to UV, moisture, and temperature extremes. Solid bare copper conductors ensure reliable signal and control over long runs between thermostats and HVAC equipment, doorbells, and security panel connections. Choose the conductor count that matches your system terminal count.\u003cbr\u003e\u003cbr\u003eC(ETL)US Listed · CMR \/ FT4 · CL2 \/ CL2R · Sunlight Resistant\u003cbr\u003e\u003cbr\u003eCommon Specifications (all variants):\u003cbr\u003e• Cable Type: Thermostat Wire, Riser (CMR)\u003cbr\u003e• Conductor: Solid Bare Copper, 18AWG\u003cbr\u003e• Insulation: Color-coded PVC\u003cbr\u003e• Jacket: CMR-rated PVC, Brown, Sunlight Resistant\u003cbr\u003e• Standards: CL2 \/ CL2R, CMR \/ FT4\u003cbr\u003e• Certifications: C(ETL)US Listed, UL STD 444, CAN\/CSA STD C22.2 NO.214\u003cbr\u003e\u003cbr\u003eConductor variants and recommended applications:\u003cbr\u003e• 18\/2 (0.132 in. OD, 500ft) — Basic heating, doorbells, simple controls\u003cbr\u003e• 18\/3 (0.140 in. OD, 500ft) — Single-stage heat\/cool + fan\u003cbr\u003e• 18\/4 (0.154 in. OD, 500ft) — Most thermostats: R\/G\/Y\/C terminals\u003cbr\u003e• 18\/5 (0.170 in. OD, 500ft) — Heat pumps, auxiliary heat systems\u003cbr\u003e• 18\/6 (0.186 in. OD, 500ft) — Multi-stage systems, emergency heat\u003cbr\u003e• 18\/8 (0.202 in. OD, 250ft) — Smart thermostats, zoned HVAC systems\u003cbr\u003e\u003cbr\u003eWhen in doubt, always choose one conductor count higher than your current system needs — spare conductors make future upgrades easy.\u003c\/p\u003e","brand":"Big-A-Cables","offers":[{"title":"2 Conductors \/ 500 Feet","offer_id":46005903524074,"sku":"1331-Big","price":94.99,"currency_code":"USD","in_stock":true},{"title":"3 Conductors \/ 500 Feet","offer_id":46005903556842,"sku":"4085-Big","price":130.99,"currency_code":"USD","in_stock":true},{"title":"4 Conductors \/ 500 Feet","offer_id":46005903589610,"sku":"4086-Big","price":165.99,"currency_code":"USD","in_stock":true},{"title":"5 Conductors \/ 500 Feet","offer_id":46005903622378,"sku":"1332-Big","price":198.99,"currency_code":"USD","in_stock":true},{"title":"6 Conductors \/ 500 Feet","offer_id":46005903655146,"sku":"4087-Big","price":224.99,"currency_code":"USD","in_stock":true},{"title":"8 Conductors \/ 250 Feet","offer_id":46005903687914,"sku":"1333-Big","price":162.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/6388\/8618\/files\/377384.jpg?v=1778278008"}],"url":"https:\/\/bigacables.com\/collections\/thermostat-cable.oembed","provider":"Big-A-Cables","version":"1.0","type":"link"}