37 INSTALLATION AND MAINTENANCE OF AIR COMPRESSORS, AIR CONDITIONERS, AIR PURIFIERS, HEATERS, STATIONARY AND PORTABLE GENERATORS, EMERGENCY LIGHTING TOWERS, REMOTE EQUIPMENT MONITORS, STATIONARY INDUSTRIAL MOTORS, WASTE AND WATER PUMPS AND CONTROLS, EMERGENCY BATTERY POWER SYSTEMS, RESIDENTIAL DOORS, OUTDOOR GRILLS, FIREPLACE EQUIPMENT, PROPANE OPERATED INSECT TRAPS, GAS LAMPS AND WATER HEATERS