Air conditioning machinery and implements, namely, air conditioners, dehumidifiers, ventilators for exhausting attic air, air purifiers, ventilating exhaust fans, hot air and chimney blowers, evaporative air coolers, water cooling towers, barometric condensers for condensing vapors by contact with liquids, and evaporators; warm-air heating equipment, namely, heating elements, radiators, heat sinks and thermostatic valves