9 Apparatus and instruments for monitoring fluid in central heating and cooling systems; smart filters, namely, water testing instrumentation in the nature of smart filters for monitoring and detecting impurities in central heating and cooling systems; magnetic filters, namely, water testing instrumentation in the nature of magnetic filters for monitoring and detecting impurities in central heating and cooling systems; smart magnetic filters, namely, water testing instrumentation in the nature of smart magnetic filters for monitoring and detecting impurities in central heating and cooling systems; magnetic power flushing filters, namely, water testing instrumentation in the nature of magnetic power flushing filters for monitoring and detecting impurities in central heating and cooling systems; magnetic smart power flushing filters, namely, water testing instrumentation in the nature of smart magnetic power flushing filters for monitoring and detecting impurities in central heating and cooling systems; water testing apparatus and instruments; water monitoring apparatus and instruments; apparatus and instruments for testing and monitoring central heating water; apparatus and instruments for testing and monitoring water in central heating systems, cooling systems, boilers, heaters, radiators, pumps and pipes; apparatus and instruments for monitoring and testing central heating systems, cooling systems, boilers, heaters, radiators, pumps and pipes; apparatus and instruments for monitoring and testing the efficiency, performance and consumption of central heating systems, cooling systems, boilers, heaters, radiators, pumps and pipes; apparatus and instruments for monitoring and testing heating, ventilating, air conditioning or water supply apparatus, systems, devices and installations; apparatus and instruments for monitoring and testing the efficiency, performance and consumption of heating, ventilating, air conditioning or water supply apparatus, systems, devices and installations; electric checking, monitoring and controlling apparatus for heating, ventilating, air conditioning or water supply apparatus, systems, devices and installations; electric checking, monitoring and controlling apparatus for central heating systems, cooling systems, boilers, heaters, radiators, pumps and pipes; electric control apparatus, systems, devices and installations for water testing in heating and cooling systems; programmable control apparatus, systems, devices and installations for water testing in heating and cooling systems; remote control apparatus, systems, devices and installations for water testing in heating and cooling systems; remote control apparatus, systems, devices and installations for use with heating, ventilating, air conditioning or water supply apparatus, systems, devices and installations; remote monitoring apparatus, systems, devices and installations for water testing in heating and cooling systems; remote monitoring apparatus, systems, devices and installations for use with heating, ventilating, air conditioning or water supply apparatus, systems, devices and installations; temperature and energy control apparatus for water testing in heating and cooling systems; thermostats; thermostat control apparatus; thermal sensors for use in thermostats; thermal controls for water testing in heating and cooling systems; boiler control apparatus; communications controllers for water testing in heating and cooling systems; downloadable computer software for water testing and for managing, monitoring, controlling and testing heating and cooling systems; downloadable computer software for monitoring and testing water; downloadable computer software for water testing and for managing, monitoring, controlling and testing heating, ventilating, air conditioning or water supply apparatus, systems, devices and installations; downloadable computer software for monitoring, testing and recording the efficiency, performance and consumption of central heating systems, cooling systems, boilers, heaters, radiators, pumps and pipes; downloadable interactive computer software accessible electronically, via computers or mobile telephones, for water testing and for managing, monitoring, controlling and testing heating and cooling systems; downloadable computer software applications for waste testing and for managing, monitoring, controlling and testing heating and cooling systems; downloadable mobile phone applications for water testing and for managing, monitoring, controlling and testing heating and cooling systems; downloadable mobile applications for water testing and for managing, monitoring, controlling and testing heating and cooling systems; apparatus, equipment and instruments for measuring the efficiency, performance and consumption of heating apparatus, systems, devices and installations; replacement parts and fittings for all of the aforesaid goods