The Rehau Smart Controls weather-sensing control module has been developed for use with REHAU hydronic snow and ice melting (SIM) systems. The Rehau Smart Controls SIM Module also features an automated option that allows the system to operate with optimum efficiency. The SIM controls module employs the ability to listen to the weather forecast via Web-enabled access to the National Weather Service (NOAA) and Environment Canada. Using the weather data and temperature sensors installed within the melting area, the control chooses an automatic idle temperature setting to warm the slab so melting begins at the first sign of snow or ice. To save energy, the control turns the system off once the surface is dry. The SIM control module’s Web-enabled feature also allows the system to be controlled remotely from any Internet-accessible device. In addition, the module is flexible, scalable, and programmed to meet a range of requirements, including unlimited snow melting zones and priority scheduling to clear crucial areas such as walkways and entrances first. The SIM module can be used independently or integrated with a Rehau Smart Controls indoor comfort control system.