Select a Sub-Class code link to generate a list of Certified Small Business vendors.

Code Description
031-03 AIR CONDITIONERS: COMMERCIAL, AND PARTS AND ACCESSORIES NOT INDIVIDUALLY ITEMIZED
031-04 AIR CONDITIONERS: CONTROLLED ENVIRONMENT (FOR COMPUTER ROOMS, ETC.), AND PARTS AND ACCESSORIES NOT INDIVIDUALLY ITEMIZED)
031-05 AIR CONDITIONERS (COOLING AND COOLING/HEATING TYPES): WINDOW AND WALL MOUNTED, AND PARTS AND ACCESSORIES NOT INDIVIDUALLY ITEMIZED
031-06 CONTROL UNITS-AIR CONDITIONING AND HEATING-INCLUDES PARTS AND ACCESSORIES NOT INDIVIDUALLY ITEMIZED
031-08 AIR CURTAINS
031-09 AIR FLOW METERS
031-10 AIR PURIFIERS, ACCESSORIES AND SUPPLIES
031-11 BLOWERS: INDUSTRIAL TYPES
031-13 CHILLERS, HEAT EXCHANGERS AND RECEIVERS
031-17 COILS: CHILLED OR HEATED WATER, AND DIRECT EXPANSION
031-18 COIL AND FAN UNITS, AIR CONDITIONING
031-20 COMPRESSORS, AIR CONDITIONING: HERMETICALLY SEALED, WINDOW UNIT TYPE
031-21 COMPRESSORS, AIR CONDITIONING: INDUSTRIAL TYPE, AND PARTS
031-23 CONDENSING UNITS (FOR AIR CONDITIONERS)
031-24 CONTROLS, COOLING TOWER WATER TREATMENT: PH, CONDUCTIVITY, CORROSION SENSORS
031-25 CONTROLS: LIMIT SWITCHES, RELAYS, THERMOSTATS, GAS VALVES, ETC.
031-26 CONTROL SYSTEMS: COMPLETE (FOR AUTOMATIC TEMPERATURE CONTROL)
031-27 COOLING TOWER WATER TREATMENT: NON- CHEMICAL OZONE, CENTRIFUGAL SEPARATORS, MAGNETIC DESCALING EQUIP. (SEE CLASS 885 FOR CHEMICAL TYPES)
031-28 COOLING TOWERS-FORCED AIR, GRAVITY, ETC.
031-29 DAMPERS, MOTORIZED
031-32 DUCT, PREFABRICATED (FLEXIBLE OR RIGID): GLASS FIBER, PLASTIC, ETC.
031-33 DUCT, FABRICATED, METAL
031-34 DUST COLLECTORS, INDUSTRIAL TYPE
031-36 AIR CLEANERS-ELECTRONIC, ELECTROSTATIC PRECIPITATORS, OZONATORS, ACCESSORIES, AND PARTS
031-38 EVAPORATIVE COOLERS
031-40 FANS-INDUSTRIAL TYPES:ATTIC, EXHAUST, FORCED DRAFT, ETC.-INCLUDES FAN BLADES AND FAN PARTS
031-41 FANS, ROOM TYPE, CEILING AND PORTABLE TYPE (STATIONARY AND OSCILLATING)
031-43 FILTER COATING, ADHESIVE, COIL CLEANERS, DEGREASING SOLVENTS, ETC.
031-44 FILTERS-AIR CONDITIONING/FURNACE- PERMANENT TYPE
031-45 FILTERS, AIR CONDITIONING/FURNACE (DISPOSABLE TYPES)
031-46 FILTERS AND FILTER MEDIA, EVAPORATIVE COOLER
031-49 FILTER FRAMES, METAL
031-51 FURNACES, CENTRAL HEATING TYPE (FORCED AIR, GAS FIRED)
031-55 TOOLS-HAND-AIR CONDITIONING AND HEATING SERVICE TYPE (INCLUDING LEAK DETECTORS)
031-56 HEAT PUMPS
031-57 HEATERS, ELECTRIC (BASEBOARD TYPE) AND PARTS
031-58 HEATERS, ELECTRIC (PANEL OR WALL TYPE) AND PARTS
031-59 HEATERS, ELECTRIC (PORTABLE) AND PARTS
031-60 HEATERS, GAS-FIRED (SPACE TYPE, VENTED AND UNVENTED) AND PARTS
031-61 HEATERS, GAS-FIRED (WALL TYPE, VENTED AND UNVENTED) AND PARTS
031-62 HEATERS, KEROSENE OR OIL FIRED (SPACE TYPE, VENTED AND UNVENTED) AND PARTS
031-63 HEATERS, SPACE, STEAM
031-65 HEATING ELEMENTS, ELECTRIC
031-69 ODOR CONTROL EQUIPMENT-INDOOR
031-70 ODOR CONTROL EQUIPMENT, DUCT AIR (INCLUDING OZONE TYPE)
031-72 PUMPS, DESCALING ACID
031-73 PUMPS, REFRIGERANT CIRCULATING
031-74 PUMPS, REFRIGERANT VACUUM
031-82 STOVES, WOOD OR COAL
031-87 TESTING AND RECORDING INSTRUMENTS
031-89 THERMOMETERS AND GAUGES
031-91 UNIT HEATERS, ELECTRIC (DUCT AND SUSPENDED TYPES)
031-92 UNIT HEATERS, GAS-FIRED (DUCT AND SUSPENDED TYPES)
031-93 UNIT HEATERS, GAS-FIRED (RADIANT AND INFRARED, PORTABLE AND STATIONARY)
031-94 UNIT HEATERS, STEAM AND HOT WATER TYPES
031-95 VENTILATORS, ALL TYPES EXCEPT ROOF (SEE 031-78 & 79 FOR ROOF TYPE)
031-96 VENT PIPES, FITTINGS, AND ACCESSORIES
031-97 VACUUM SYSTEM, CENTRAL, INCLUDING FILTERS, PARTS AND ACCESSORIES