This is the gauge (AWG) . Most residential systems use 18-gauge solid core wire . Avoid using thinner wires (like 24 AWG) for long runs, as they can cause signal loss.
This is the number of conductors (individual wires) inside the cable. 2-Wire: Heating only (older boilers). buy thermostat wire
Standard for most modern heat/AC systems. It includes the crucial C-wire . 8-Wire: Recommended for heat pumps or multi-stage systems. 2. The "C-Wire" Factor This is the gauge (AWG)
Upgrading your home’s climate control? Whether you're installing a cutting-edge smart thermostat or simply replacing a frayed connection, getting the right is the foundation of a reliable HVAC system. buy thermostat wire
When shopping, you’ll see labels like or 18/8 . Here is how to read them: