electronic control instruments and apparatus (including wireless controls) for controlling heating, ventilating, refrigerating, and air conditioning systems, and parts thereof, namely, microprocessors, microcontrollers, computer hardware, controls, thermostats, microchips, operating systems and programs, computer utility programs, and computer monitors

apparatus for air conditioning, namely, room air conditioners, central air conditioners, and multi-ton rooftop air conditioners; apparatus for refrigerating, namely, compressors, condensers, chillers, and coolers, including reciprocating compressors, air cooled and water cooled condensers, reciprocating and absorption type chillers, and both shell and tube type coolers; apparatus for heating, namely, furnaces, heat pumps, induction air terminals; electric and steam radiators, solar heating panels, and hot water heaters; and apparatus for ventilating, namely, air handlers, including central station air distribution systems, ceiling air distribution systems, energy recovery systems, humidifiers, and electronic air cleaners; all for both commercial and industrial use

installation, maintenance, and repair of heating, ventilating, refrigerating, and air conditioning systems

monitoring of heating, ventilating, refrigerating, and air conditioning systems