The Carrier website lists the Performance series of thermostats as being particularly easy to read and use, as of 2015. These thermostats come in programmable and non-programmable variants, and are capable of managing both temperature and humidity.
Performance thermostats can be used in a Hybrid Heat system and are cross-compatible with the Comfort series of thermostats, enabling the installation of both variants in the same home. As of 2015, the TP-WEM01 is the highest tier in the series, featuring a large, color touch screen, Wi-Fi compatibility with Apple and Android smartphone and tablet devices, and a recording feature that enables the thermostat to automatically adjust energy consumption and report energy usage.
Cost per energy unit can be programmed into the thermostat for an accurate estimate of monthly heating or cooling costs. Each thermostat terminal also features a humidity sensor with the easy-to-program Touch-N-Go interface exclusive to Carrier. The thermostat is also zoned HVAC-system compatible, enabling the installation of several units in different rooms for independent control over temperature and humidity. Carrier lists the energy usage of this thermostat as being 20 percent lower for both heating and cooling than conventional thermostats, citing a third-party study that compared the WEM01 to a non-programmable thermostat adjusted to a constant 72 degrees Fahrenheit.