












⚡ Wire your comfort with confidence — the pro’s choice for flawless HVAC control!
This 18/6 25ft thermostat wire from NATIONAL Wire&Cable is a professional-grade, USA-made cable featuring 100% solid copper conductors for superior electrical conductivity. CL2 ETL listed and designed for low voltage HVAC applications, it offers durable construction and 6 conductors to support complex thermostat and zone control systems. Trusted by contractors and DIYers alike, it comes with a lifetime warranty ensuring long-term reliability and performance.








| ASIN | B0CSPRPNX1 |
| Best Sellers Rank | #18,498 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #123 in Electrical Wire |
| Brand | NATIONAL Wire&Cable |
| Color | Brown |
| Date First Available | January 18, 2024 |
| Item Weight | 1.01 pounds |
| Manufacturer | NATIONAL Wire&Cable |
| Material | Copper |
| No. of wires | 6 |
| Number of Cable Strands | 6 |
| Package Dimensions | 8.58 x 8.23 x 1.22 inches |
| UPC | 646361145396 |
| Voltage | 240 Volts |
K**F
Perfect HVAC conductor
I used this to wire in two thermostats, two zone dampers and a zone controller. Wire seems thick true to gauge, insulated well, it's durable, easy to strip and functions well for what it's supposed to do.
V**N
more than enough quality for me.
i used this wire and it worked great.
A**Y
An Excellent Value!
Excellent quality at an affordable price and made in the USA.
P**R
As advertised
Arrived quickly, good sturdy quality.
A**R
Good wire for internal low voltage house wiring
Good 18-gauge, 4-conductor wire for internal low voltage house wiring - thermostat or door bell.
J**C
Upgraded my 4-wire to 5-wire Thermostat cable
Work well, upgraded my 4-wire to 5-wire Thermostat cable.
A**R
Save the $ and pull you own C-Wire
Excellent run your own C-Wire and avoid the ridiculous price from the HVAC and Electrician folks. :)
G**Y
Cable
Works
A**R
It’s good
A**L
I purchased for installation of nest thermostat and worked perfect I recommend it
N**R
The cable outer jacket quality is not strong as advertised. Inner wire jacket comes off very easy.
Trustpilot
2 days ago
1 month ago