11 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