The definition of a dual temperature is a system that can control two different temperatures in the same space. This type of system is ideal for applications where two different temperatures are needed, such as in a home or office. For example, a dual temperature system can be used to keep a living room at a comfortable temperature while also providing a cooler temperature in a bedroom. Dual temperature systems are also useful in commercial settings, such as restaurants, where different areas need to be kept at different temperatures. Dual temperature systems are often used in combination with other HVAC systems, such as air conditioning, to provide optimal comfort and energy efficiency. Dual temperature systems are designed to be efficient and cost-effective, and can be tailored to meet the specific needs of any space.