Cheapest 50 ft 18/2 thermostat wire

All sizes of 18/2 thermostat wire →

Amazon $17.99/rolltypical $17.99 · 1 listing Buy on Amazon: $17.99 for 1 roll →as of 2026-11-06 14:16:58 UTC
eBay $14.99/rolltypical $16.47 · 6 new listings Buy on eBay: $14.99 for 1 roll →as of 2026-11-06 UTC

Amazon prices are before shipping (free on most items with Prime); eBay prices include shipping. We earn a commission when you buy through these links, at no cost to you.

All 7 listings, single rolls first, then multipacks

ItemSizePricePer roll
Southwire 2 Conductor 18/2 Thermostat Wire; 18-Gauge Solid Copper - 50ft 1 roll1 roll$14.99$14.99 eBay →
50ft 18/2 Bell Wire Low Voltage Thermostat Doorbell Landscape Lighting Cable 1 roll1 roll$15.16$15.16 eBay →
18/2 Syton Thermostat Doorbell HVAC Wire, 7032 CL3R 50' 1 roll1 roll$15.99$15.99 eBay →
Southwire 50-ft 18/2 Thermostat Wire Solid Copper Outdoor/Indoor 150 Volts Black 1 roll1 roll$16.95$16.95 eBay →
Cableague Thermostat Wire 18/2 18 Gauge 2 Conductor ETL 18-2 50 Feet Brown (18-2 Brown, 50Feet) 1 roll1 roll$17.99$17.99 Amazon →
CCI Thermostat Wire 18/2 Solid CL2 In-Wall Cable 50 FT Spool 55302 USA 1 roll1 roll$18.64$18.64 eBay →
18/2 Southwire SIMpull Thermostat / Doorbell / HVAC Wire, 50' 1 roll1 roll$21.65$21.65 eBay →

Amazon as of 2026-11-06 14:16:58 UTC: Amazon's own price, else its lowest new offer, before shipping and tax (via Keepa); product prices and availability are accurate as of the date/time indicated and are subject to change. eBay: new Buy It Now listings from US sellers as of 2026-11-06 UTC, item plus shipping.

Size comes from the seller's unit count or the listing title; check the listing before buying. As an Amazon Associate and eBay Partner, Sharpest earns from qualifying purchases.

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