Steam generating installations; Refrigerating machines and installations; Drying apparatus for use in air-conditioning, heat recovery, air filtering and ventilating; Regulatory accessories for water supply, water temperature, water flow, air flow as well as sanitary apparatus and installations, namely, metered valves; Devices and apparatus for industrial heat technology, including for industrial ventilating, air conditioning and cooling as well as room ventilation installations, namely, air-handling units, dehumidifiers, air handlers, precision air-conditioning units, fan convection heaters, convection heaters, installations for the cooling of water, heat pumps; Filters and filtration systems constructed therefrom, namely, water filtration and replacement filters therefor for air handling units; Heat exchangers and structural fittings for heat exchangers, other than parts of machines; filters for air-conditioning; air filters for industrial installations; air-conditioning installations; air treatment equipment, namely, ionization apparatus for the treatment of air; air humidification apparatus for use with air conditioning apparatus; hot air space heating apparatus for industrial purposes; ventilating installations, namely, ventilators for ventilators for heat recovery; filter bags for ventilating installations, namely, filter bags for ventilating installations in air conditioning; filters for exhaust extractors being parts of household and industrial installations in the nature of rooftop grease containment system comprising an exhaust fan, grease deflector, and filter for trapping grease vented from rooftop exhaust fans for cooking areas within the building; air-conditioning apparatus; fans for air-conditioning apparatus; air cooling apparatus; ionization apparatus for the treatment of air; fans being part of air-conditioning installations; electrically powered fans for ventilation purposes; refrigerating chambers; hot air space heating apparatus; electric air reheaters for commercial use; air sterilizers not for medical purposes; air dryers for the removal of water vapor from compressed air and gases; electric radiators; ventilating fans for household use and gymnasiums; heat regenerators; regulating and safety accessories for air conditioning apparatus, namely, thermostatic valves as parts of air conditioning installations; heat pumps; heat recovery apparatus, namely, heat recovery ventilator; heat accumulators; electric commercial and industrial water re-cooling system in the nature of air handling units; heat exchanger pipes, cooler pipes and condenser tubes, finned tubes and filter pipes for heat exchangers, namely, pipes for heating boilers; rotary heat exchangers not being parts of machines; air heating furnaces; fans for air conditioning apparatus; air control dampers, namely, control devices used in air ducts to regulate the flow of air; valves for air conditioners; water supply installations, namely, valves for regulating water supply; water supply equipment, namely, valves for regulating water supply; gas burners, heating boilers and water heaters; lighting fixtures and lighting reflectors; fireplaces; air filters for industrial use machines and installations; HEPA filters for household use; industrial treatment installations, namely, gas purification machines and installations; industrial furnaces not for food or beverages; industrial distillation apparatus for chemical processing not for scientific purposes; industrial installations for the extraction of gases, namely, extractor hoods for kitchens; installations for the extraction of gases from labs, namely, ventilation systems comprised of ventilating fans for industrial purposes and ventilation hoods, pressurization systems comprised of pressure regulators for gas installations and pressure swing adsorption equipment for the recovery, purification and return of gases in laboratories, smoke extraction fans, air filtering systems comprised of filter cartridges for a laboratory dust collection, reservoirs, pumps and filters; industrial apparatus for dehydrating food waste; industrial treatment installations, namely, installations for the collection of liquids in the nature of sustainable onsite wastewater treatment systems; water conditioning units; industrial treatment installations in the nature of installations for trapping impurities from molten metal, namely, melting furnaces, industrial furnaces; air purifying apparatus; air cleaning apparatus, namely, air exchangers for cleaning and purifying air; heating apparatus and drying apparatus, namely, hot-water space heater for industrial purpose; drying installations for air-active de-humidification, namely, HVAC systems comprised of industrial dehumidifiers; refrigerating and freezing equipment, namely, refrigerators; regulating and safety accessories for water and gas installations, namely, flashback arrestors and reverse flow check valves for gas pipes; heating, ventilating and ambient air conditioning and purification equipment, namely, air purification units; structural parts and accessories in the nature of component parts and fittings for all the aforesaid goods; including all the aforesaid goods being custom-made