As you begin searching through the different types of best programmable thermostat models, you may run across terms you are unfamiliar with. Here are two of them, broken down for you.
Single Pole Best Programmable Thermostat Versus the Double Pole
A single pole best programmable thermostat breaks only one side of the power line to your heater. You are unable to turn the thermostat off, meaning that power continues to flow to the heater even if it is not in use. The control knob has a low temperature setting and does not have an off position. You can tell if you have a single pole best programmable thermostat because it only has two wires. So even if the temperature dial is turned all the way down, there is still voltage spilling into the heater through one line. Having this constant voltage running may pose a hazard to anyone who might perform electrical work on the heater if they do not realize that the circuit is still on. In order to perform safe electrical work, you will need to turn off the power at the circuit breaker.
In contrast, a double pole best programmable thermostat breaks both sides of the power line; therefore all power to the heater is interrupted. This interruption ensures that those performing electrical work on the heater remain safe. However, as an extra pre-caution, it is best to turn the power off at the circuit breaker and not just at the best programmable thermostat before beginning any electrical changes or repairs. When looking at a double pole thermostat you will notice that it uses four wires and does have an off position on the thermostat.
Since they are safer, double-pole thermostats are preferred and may actually be required by code. Before you purchase or install your best programmable thermostat, check your local codes and building requirements to find out if you need to buy a single or double pole thermostat to adhere to the standards listed.
Find out more features in a best programmable thermostat.