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Southwire 250 ft. 18/5 Solid Copper Thermostat Wire

Southwire 250 ft. 18/5 Solid Copper Thermostat Wire

Made in America

Support American manufacturers + independent hardware retailers in one purchase.

Discover the Southwire 250 ft. 18/5 Solid Copper Thermostat Wire, designed for reliable HVAC connectivity and excellent conductivity in any installation.
Southwire MPN 64169644
Sold Locally Only

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

Typical Store Price i
Typical store price: low $0.99, average $0.49
In-Store Exclusive

This one's worth the trip to the store.

Brands like Weber, Milwaukee, Yeti, and DeWalt restrict where their products can be sold online — and for good reason. In-store buyers get authentic products, full manufacturer warranty, and access to pricing that simply isn't allowed to be advertised on the web.

  • Authorized dealer network · Full manufacturer warranty & support
  • Guaranteed authentic · No counterfeits, no gray-market resellers
  • The brands set these standards · Be wary of sellers who don't follow them
Why isn't this online? The whole story →
Shop Local · Support Independent

Every order helps keep your local hardware store on the corner.

Why we built NHG
You might find it for less locally. Independent retailers often offer competitive pricing — some products are even cheaper in-store than online.
Real expert advice — not search results. Independent hardware staff know their inventory and the local conditions you're working in.
Keep the neighborhood working. Every dollar spent at an independent retailer returns roughly 3x more to your local economy than at a national chain.

About Product Overview

Enhance your HVAC installations with the Southwire 250 ft. 18/5 Solid Copper Thermostat Wire, the perfect solution for reliable connectivity in your heating and cooling systems. Crafted from premium solid copper, this wire ensures excellent conductivity, making it ideal for thermostat applications.

Key features include:

  • High Amp Rating: Designed to handle robust electrical loads for efficient performance.
  • Direct Burial Capable: This wire can be buried underground, making it suitable for outdoor installations.
  • Flame Retardant: Built with a thermoplastic insulation that protects against heat and flame hazards.
  • Durable Nylon Jacket: The protective nylon jacket enhances durability and ensures long-lasting use in various environments.
  • Ground Material: Features a reliable copper ground for improved safety and performance.

The Southwire 250 ft. 18/5 Solid Copper Thermostat Wire is not only versatile for HVAC systems but also offers peace of mind with its quality construction. The flexible design allows for easy installation and management, making your wiring projects simpler and more efficient.

Don’t compromise on quality. Choose the Southwire 250 ft. 18/5 Solid Copper Thermostat Wire today and experience unmatched reliability and performance in your electrical projects. Order now and ensure your home’s comfort is just a wire away!

The Details Specifications

Brand Southwire
SKU 32303
UPC 032886855337
Unit 0
Case Pack Quantity 2 per case
Retail Unit Quantity 250
Unit of Measure 250 SO
Dimensions (L × W × H) 7 × 7 × 4
Weight 8 lbs
Cubic Feet 0.12842 ft³
Country of Origin USA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab

Ask our counter. Or theirs.

Most hardware stores can do more than you think. If we can't help you, the folks down the street probably can — just ask at the counter.

What we offer
Free Local Pickup Ship to your hometown store
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Ships Nationwide From our distribution network
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$0.68 of every dollar spent at a local independent business stays in the community. At a national chain, it's about fifteen cents. Civic Economics, multi-city retail studies
Their Counter
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The stores we send you to are local and independently run — often for generations, the kind of place where someone behind the counter knows the regulars. We don't own them. We just think they deserve the foot traffic. They can put most of what we sell on their next truck. Ask there before you check out here.

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About our directory. National Hardware Group is an independent retailer and directory. The local stores we list and link to are separately owned and operated — we have no ownership stake in any of them, and most pay us nothing to be included. That includes plenty of stores flying a co-op banner that people don't realize are locally owned and run, not operated by a corporation. Store owners can choose to upgrade their listing for an enhanced presence or pickup features, but the base directory is free, and inclusion is never a paid endorsement.

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