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Southwire 50 ft. 18/5 Solid Copper Thermostat Wire

Southwire 50 ft. 18/5 Solid Copper Thermostat Wire

Made in America

Support American manufacturers + independent hardware retailers in one purchase.

Five solid-copper conductors handle multi-stage HVAC controls, and direct burial rating means flexible installation.
Southwire MPN 64169622
Sold Locally Only

This product isn’t sold on our website — see your local hardware store.

In-Store Exclusive

This one's worth the trip to the store.

This Southwire item is one you'll find in stores rather than online — and that's often the better way to buy. In store you get the genuine article, full manufacturer warranty, and real advice from someone who's actually handled it — no counterfeits, no gray-market resellers.

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About Product Overview

This 18/5 thermostat wire from Southwire is built for low-voltage HVAC control runs where you need five conductors to handle multi-stage heating, cooling, and fan functions. The solid copper conductors are rated for 15 amps and 150 volts, with PVC insulation that's flame retardant and UV resistant. It's rated for direct burial, giving you flexibility on how the run is installed, and comes in a 50-foot length that covers most thermostat-to-furnace jobs without splicing.

  • 18 AWG, 5 conductors, solid copper
  • 15 amp / 150 volt rating
  • Direct burial rated, UL listed
  • Temperature rating: -20° to 60°C
  • 50 ft length, brown jacket

The Details Specifications

Brand Southwire
Model / MPN 64169622
UPC 032886855979
Weight 2 lbs
Country of Origin USA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab
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