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Air cleaning units; Air cleaning units containing an air filter, ultraviolet lights and a photocatalytic filter; Air conditioners; Air conditioners for vehicles; Air conditioning apparatus and installations; Air conditioning installations; Air conditioning units; Air cooling apparatus; Air filtering installations; Air filters for air conditioning units; Air filters for domestic use; Air purification units; Air purifiers; Air purifiers; Air purifying apparatus; Air purifying apparatus and machines; Air-conditioning apparatus; Air-conditioning apparatus and installations; Air-conditioning installations; Air-conditioning, air cooling and ventilation apparatus and instruments; Boilers for heating installations; Central air-conditioning installations; Components for air conditioning and cooling systems, namely, evaporative air coolers; Dampers, namely, control devices used in air ducts to regulate the flow of air; Furnace boilers; Gas water heaters; Gas water heaters; Geothermal-based HVAC units; Heating boilers; Heating systems composed primarily of tubes, pipes and manifolds through which warm or high temperature water circulates; Heating systems composed primarily of tubes, pipes and pre-assembled manifolds through which cold or low temperature water circulates; Heating systems for residential and commercial buildings comprised of boilers, valves, pipes, manifolds, solar panels, control panel, switches and electrical wire, all sold as a unit; Hot water heaters; Hot water tanks; Hot-water space heating apparatus; Hybrid water heater; Solar water heaters; Tankless water heaters; Water heaters

Air conditioning contractor services; Air duct cleaning services; Basement waterproofing; Boiler cleaning and repair; Building construction services; Building construction supervision; Building construction, remodeling and repair; Building maintenance and repair; Building sealing and caulking services; Electrical contracting; Electrical contractor services; Heating contractor services; Heating equipment installation and repair; Home energy assessment services for the purpose of determining home improvements needed to improve energy use and efficiency; HVAC contractor services; Installation and maintenance of solar energy based power plants; Installation and maintenance of solar thermal installations; Installation and repair of air conditioning apparatus; Installation and replacement service for heating, ventilating and air conditioning systems; Installation and replacement service for water heaters; Installation of geothermal energy based power plants; Installation, repair and maintenance of condensing apparatus, steam condensers, radiators for motors and engines, air reheaters, boiler tubes; Installation, repair and maintenance of heating equipment; Maintenance and repair of heating installations; Mechanical contractor services; Plumbing; Plumbing and gas and water installation; Plumbing contractor services; Plumbing services; Repair and installation services, namely, the installation of heating, cooling and environmental control systems primarily using solar energy, renewable energy resources and rainwater; Repair or maintenance of boilers; Repair or maintenance of gas water heaters