Thermostats that have W2 and/or T2 terminals are known as ____________?

Thermostats equipped with W2 and/or T2 terminals are classified as multistage thermostats. This designation indicates that these thermostats can control more than one stage of heating or cooling, allowing for greater flexibility and efficiency in temperature regulation.

In a typical multistage system, W2 refers to the second stage of heating. This means that when the heating demand exceeds the capacity of the first stage, the system can activate the second stage to provide additional heat. Similarly, T2 often refers to an additional cooling stage or can indicate two types of heating or cooling stages. This capability is particularly useful in climates that experience variable temperature changes or in systems that require more precise temperature management.

Multistage thermostats are designed to effectively manage both the initial and subsequent heating or cooling stages to maintain desired comfort levels more efficiently, which can lead to reduced energy consumption and enhanced comfort in living or working spaces.