Abstract: A microcomputer-based controller has control outputs operably connected to a hydronic boiler of a building, a network connection for receiving weather forecast information from a meteorological server, and an input operably connected to an outside temperature transducer. The controller is configured to an appropriate set-point temperature for the boiler based on both the current outside temperature and a forecasted outdoor temperature from the meteorological server. Remote zone temperature sensors report zone temperatures to the controller, based on which further adjustment of the set point temperature are made if a notable number of zones all have temperatures notably shifted in a same direction from a normally expected zone temperature. The zone temperature sensors and controller are connected as nodes in a mesh network.

Abstract: A computer-implemented method of controlling operation of a heating and air conditioning system, said method automatically obtaining current and forecasted weather data from one or more internet based meteorological HTTP web servers, automatically controlling operation of the heating and air conditioning system based on the current and forecasted weather data and a current indoor temperature of an indoor environment relative to a desired set point temperature for said indoor environment. Variable hysteresis ranges and temperature set points are adjusted not only on the basis of the weather data, but also on an occupancy status of the indoor environment. Embodiments include weather anticipating thermostats and Package Terminal Air Conditioner controllers interacting with Status Interface Alarm Control Update Servers.