Embodiments are disclosed of a radiator temperature control apparatus for controlling the heat output of a radiator. The radiator temperature control apparatus may include an airtight enclosure around the air outlet of the radiator air vent, an adjustable opening in the airtight enclosure controlled by an actuator, and a controller connected to the actuator. In operation, the controller can be configured to open the adjustable opening in the airtight enclosure allowing air in the radiator to be expelled through the adjustable opening, thereby allowing steam to enter the radiator, and heat the room. The controller can be configured to close the adjustable opening, stopping air from being expelled from the radiator, thereby stopping additional steam from entering the radiator.

A smart heating system (10) for detecting leaks comprising a boiler (12), a plurality of radiators (14a, 14b, 14c, 14d), and a water circulation system (16). A valve is at or adjacent to the inlet and/or outlet of each radiator (14a, 14b, 14c, 14d) and an electronic pressure gauge is at each radiator (14a, 14b, 14c, 14d) configured to measure a water pressure in the radiator (14a, 14b, 14c, 14d) and/or water circulation system (16) adjacent to the radiator (14a, 14b, 14c, 14d) to generate a pressure reading. Each electronic pressure gauge has an identifier. A user electronic device (20) with a user display is communicatively connected with the electronic pressure gauges so as to be configured to receive and display the pressure readings and identifiers.