9 Apparatus and instruments for monitoring, measuring and checking, namely, water testing apparatus for monitoring and detecting contamination in heating, ventilating and air conditioning systems; magnetic filters, namely, for detecting contaminants in central heating systems; smart magnetic filters, namely, for detecting contaminants in central heating systems; power flushing magnetic filters for detecting contaminants in central heating systems; smart power flushing magnetic filters for detecting contaminants in central heating systems; water testing apparatus and instruments; apparatus and instruments for testing and monitoring water in central heating systems; apparatus and instruments for testing and monitoring water in central heating systems, cooling systems, boilers, heaters, radiators, heat pumps and heating pipes; apparatus and instruments for monitoring and testing central heating systems, cooling systems, boilers, heaters, radiators, heat pumps and heating pipes; apparatus and instruments for monitoring and testing the efficiency, performance and consumption of central heating systems, cooling systems, boilers, heaters, radiators, heat pumps and heating pipes; apparatus and instruments for monitoring and testing heating, ventilating, air conditioning and water supply apparatus, systems, devices and installations; apparatus and instruments for monitoring and testing the efficiency, performance and consumption of heating, ventilating, air conditioning and water supply apparatus, systems, devices and installations; electric control apparatus, systems, devices and installations, namely, electric control devices for heating and energy management; programmable control apparatus, systems, devices and installations, namely, electric control devices for heating and energy management; remote control apparatus, systems, devices and installations for use with heating, ventilating, air conditioning and water supply apparatus, systems, devices and installations, namely, remote controls for temperature and energy management; remote monitoring apparatus, systems, devices and installations for use with heating, ventilating, air conditioning and water supply apparatus, systems, devices and installations, namely, wireless remote controls for temperature and energy management; temperature and energy control apparatus, namely, thermostats and electric control devices for temperature and energy management; thermostats; electric control devices for thermostats; thermal sensors for use in thermostats; boiler control apparatus; computer software for monitoring and controlling the efficiency, performance and consumption of heating, ventilating and air conditioning apparatus, systems, devices and installations; computer software for controlling the operation of heating, ventilating, air conditioning and water supply apparatus, systems, devices and installations; computer software for the control and monitoring of heating, ventilating, air conditioning and water supply apparatus, systems, devices and installations; computer software for monitoring, testing and recording the efficiency, performance and consumption of central heating systems, cooling systems, boilers, heaters, radiators, heat pumps and heating pipes; downloadable interactive computer software accessible electronically, via computers or mobile telephones for the control and monitoring of heating, ventilating, air conditioning and water supply apparatus, systems, devices and installations; computer software applications for the control and monitoring of heating, ventilating, air conditioning and water supply apparatus, systems, devices, and installations; downloadable mobile applications for the control and monitoring of heating, ventilating, air conditioning and water supply apparatus, systems, devices and installations; meters, namely, electric meters and flow meters; smart meters, namely, smart electric meters and smart flow meters; electrical energy utilization meters; sensors, namely, electric sensors and temperature sensors; structural replacement parts and fittings for all of the aforesaid goods