---
product_id: 717632800
title: "18/6 25Ft. NATIONAL Wire&Cable Thermostat Doorbell HVAC Heating Control Professional Cable Wire - Made in USA - 100% Solid Copper Conductors, CL2 ETL Listed, Low Voltage Applications Use"
brand: "national wire&cable"
price: "€ 77.40"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.fi/products/717632800-18-6-25ft-national-wire-and-cable-thermostat-doorbell-hvac
store_origin: FI
region: Finland
---

# CL2 ETL Listed for Low Voltage 100% Solid Copper Conductors Made in USA since 1972 18/6 25Ft. NATIONAL Wire&Cable Thermostat Doorbell HVAC Heating Control Professional Cable Wire - Made in USA - 100% Solid Copper Conductors, CL2 ETL Listed, Low Voltage Applications Use

**Brand:** national wire&cable
**Price:** € 77.40
**Availability:** ✅ In Stock

## Summary

> ⚡ Wire your comfort with confidence — the pro’s choice for flawless HVAC control!

## Quick Answers

- **What is this?** 18/6 25Ft. NATIONAL Wire&Cable Thermostat Doorbell HVAC Heating Control Professional Cable Wire - Made in USA - 100% Solid Copper Conductors, CL2 ETL Listed, Low Voltage Applications Use by national wire&cable
- **How much does it cost?** € 77.40 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/717632800-18-6-25ft-national-wire-and-cable-thermostat-doorbell-hvac)

## Best For

- national wire&cable enthusiasts

## Why This Product

- Trusted national wire&cable brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Pure Copper Power:** Premium solid copper ensures superior conductivity and efficiency
- • **Lifetime Peace of Mind:** Backed by a best-in-class lifetime warranty for ultimate reliability
- • **Seamless HVAC Integration:** Optimized for precise thermostat-to-equipment communication
- • **Trusted American Craftsmanship:** Proudly manufactured in New York with decades of expertise
- • **Built to Last, Wired to Perform:** Durability engineered for hassle-free HVAC connections

## Overview

The NATIONAL 18/6 25Ft Thermostat Wire is a premium, USA-made cable featuring 100% solid copper conductors for superior electrical conductivity. CL2 ETL listed for safe low voltage applications, it’s engineered for durability and reliable HVAC thermostat connections. Ideal for both residential and commercial systems, it comes with a lifetime warranty, ensuring long-term performance and peace of mind.

## Description

Full description not available

## Features

- [MADE IN USA] - Proudly made in New York, USA, our factory produce high quality wires and cables since 1972
- [HIGH CONDUCTIVITY] - Premium Solid Copper wire are inside of each circuit. High technology pure copper wire is perfect for electricity conduction
- [DURABILITY] - Constructed with durability in mind, our thermostat wire is designed to withstand the rigors of installation and operation. The sturdy build ensures a long-lasting and reliable connection.
- [APLICATIONS] - Our thermostat wire features multiple conductors to facilitate the transmission of signals between the thermostat and HVAC equipment. This ensures efficient and accurate temperature regulation.Ideal for residential and commercial HVAC systems, our thermostat wire is the trusted choice for contractors, technicians, and DIY enthusiasts alike. Upgrade your thermostat wiring with confidence.
- [LIFETIME WARRANTY] - All NATIONAL low voltage wires are backed by our best-in-class warranty and lifetime satisfaction

## Product Details

- **Color:** Brown
- **Brand:** NATIONAL Wire&Cable
- **Material:** Copper
- **Number of Cable Strands:** 6
- **Voltage:** 240 Volts

## Images

![18/6 25Ft. NATIONAL Wire&Cable Thermostat Doorbell HVAC Heating Control Professional Cable Wire - Made in USA - 100% Solid Copper Conductors, CL2 ETL Listed, Low Voltage Applications Use - Image 1](https://m.media-amazon.com/images/I/81KSEAVUaRL.jpg)
![18/6 25Ft. NATIONAL Wire&Cable Thermostat Doorbell HVAC Heating Control Professional Cable Wire - Made in USA - 100% Solid Copper Conductors, CL2 ETL Listed, Low Voltage Applications Use - Image 2](https://m.media-amazon.com/images/I/81oS14W9rIL.jpg)
![18/6 25Ft. NATIONAL Wire&Cable Thermostat Doorbell HVAC Heating Control Professional Cable Wire - Made in USA - 100% Solid Copper Conductors, CL2 ETL Listed, Low Voltage Applications Use - Image 3](https://m.media-amazon.com/images/I/91bxLyzz1jL.jpg)
![18/6 25Ft. NATIONAL Wire&Cable Thermostat Doorbell HVAC Heating Control Professional Cable Wire - Made in USA - 100% Solid Copper Conductors, CL2 ETL Listed, Low Voltage Applications Use - Image 4](https://m.media-amazon.com/images/I/81Rh0QtOd5L.jpg)
![18/6 25Ft. NATIONAL Wire&Cable Thermostat Doorbell HVAC Heating Control Professional Cable Wire - Made in USA - 100% Solid Copper Conductors, CL2 ETL Listed, Low Voltage Applications Use - Image 5](https://m.media-amazon.com/images/I/81KFoY1TlvL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ It's wire.....
*by E***G on September 6, 2025*

It's solid core wire for a thermostat, what else is there? If you need jumper wires for electronic projects they might work?

### ⭐⭐⭐⭐⭐ Solid performer
*by O***P on August 18, 2025*

Does what it is supposed to do ... easy pull, easy strip, worked great.

### ⭐⭐⭐⭐⭐ Decent wire.
*by A***I on August 11, 2025*

Does what it's supposed to.

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**Shop now:** [https://www.desertcart.fi/products/717632800-18-6-25ft-national-wire-and-cable-thermostat-doorbell-hvac](https://www.desertcart.fi/products/717632800-18-6-25ft-national-wire-and-cable-thermostat-doorbell-hvac)

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-01-22*