Our NEW eCommerce site is now live to view availability. Please continue to call or email the branches to place an order.
Search

Line Card

Become a Customer

Interested in becoming a customer of Duncan Supply Company? For more information, click below to start the process.

Become a Vendor

Have new innovating products that Duncan Supply Company needs to sell? Start the process below to become a vendor of Duncan Supply Company.

Accumulator-Suction

Refrigeration Research, Parker, ALCO, Henry, Standard

Air Conditioning Equipment

American Standard, American Standard - Mitsubishi, Ameristar, Bard, Spacepak, Comfortaire, LG, Koldwave

Air Curtains

Case Parts, Refrigeration Hardware Supply

Air Doors

Mars

Air Handling Units - Chilled Water

Bohn, Russell, Multi-Aqua, Magicaire, First Company

Air Handling Units - DX

American Standard, American Standard Mitsubishi, Ameristar, Bohn, Russell, Magicaire, Multi-Aqua

Ball Valves

Mueller, Henry, Superior Valve, Emerson

Batteries

Eveready

Bearings

Browning

Belts

Browning

Blades - Saw

Lenox (American Saw)

Boilers

Laars, Trinity, Crown, Munchkin, Slant Fin, Utica

Brass Fittings

Mueller, J/B

Brazed Plate Heat Exchangers

Alfa-Laval, Flat Plate

Capacitors - Motors Start / Run

Mars

Caulk

3M, ESP

Chiller Barrels

Standard, Ketema, Dunham-Bush

Chiller Systems

Temprite, Drake, Ketema, Multi-Aqua, KR Products

Coil Cleaners

Nu-Calgon, Virginia, Vapco, Rectorseal

Compression Fittings - Brass

Mueller Brass, J/B

Condensers - Air Cooled

Copeland, Bristol, Grasso, Bitzer, Tecumseh, Embraco, Asbera

Compressors - Refrigeration, A/C

Bohn, Russell

Condensers - Water Cooled

Standard, Ketema, Packless, Flat Plate,Aalfa Laval

Condensing Units

American Standard, Ameristar, Copeland, Bohn, Russell, Bard, Tecumseh

Contactors - Definite Purpose

Honeywell, RBM, Copeland, Mars, Furnas, Emerson

Controls

Johnson, Honeywell, Ranco, White-Rodgers, ICM, Robertshaw, Kele, KMC, Newark, Siemens

Cooler Glass Doors

Anthony, Styleline, Gemtron

Cooling Towers

Amcot, Symtec, Marley (Parts)

Cooper Fitting & ACR Tubing

Mueller

Dampers - Fire, Ceiling, Controls

Main Line, Johnson Controls, Hart & Cooley, Honeywell, Arzel

Driers - Refrigeration, A/C

Sporlan, Alco, Parker, Supco, A-1 Components

Duct Heaters - Electric

Warren

Duct Heaters - Hydronic

Heatcraft, Rae, H2O Coil

Duct - Metal

Southwark

Duct Board

Johns Manville

Duct Liner

Johns Manville

Duct Tape

Nashua

Electrical Accessories

MA-Line

Evaporators - Refrigeration, A/C

American Standard, Bohn, Russell, Bard, Multi-Aqua, Aspen

Expansion Valves

Sporlan, Alco, Parker, Dan Foss

Fans & Exhaust Fans

Fantech, Chelsea, S&P

Fan Blades

Lau, Mars

Filters - Air

AAF, Trion, Aprilaire, Flanders, Glasfloss, American Standard

Filters - Electronic

American Standard, Trion, Sanuvox, Aprilaire, Honeywell

Filters - Water

Everpure, Nu-Calgon

Flashlights

Mag-Lite, Ma-Line, Supco, Terralux

Flex Duct

Hart & Cooley, ATCO

Fluid Coolers

Bohn, Russell

Gas Pipe - Flexible

Tracpipe

Gas Valves

Honeywell, Johnson Controls, Robertshaw, White-Rodgers

Geothermal Heat Pumps

Tetco, Comfortaire

Grills - Diffusers - Registers

Hart & Cooley, Airtec

Hangers - Pipe

Cain, Bassett, B-Line

Hardware - Refrigeration

Case Parts, Refrigeration Hardware Supply

Heat Pumps

American Standard, American Standard Mitsubishi, Ameristar, Bard, Koldwave, Comfortaire, EMI, Geo-Excel

Heat Recovery Ventilators

Aprilaire, Venmar, American Standard, Renewaire

Heat Tape

Raychem, Easyheat

Heating Equipment

American Standard, Ameristar, Bard, Comfortaire, Modine, Superior Radiant Products

Hoses - Refrigeration

J/B, Ritchie, Ranco, Johnson Controls

Humidifiers

American Standard, Aprilaire, Honeywell

Ice Machines/Systems

Scotsman

Indoor Air Quality

Air Scrubber by Aerus, American Standard, Aprilaire, Honeywell

Instruments, Meters - Electronic

Amprobe, Bacharach, Fluke, Fieldpiece, Universal, Cooper

Insulation - Pipe, Duct

Armacell, Nomac, K-Flex, Johns-Manville

Ladders

Louisville Ladder

Leak Detectors - Bubbles

Big Blue, Nu-Calgon,Vapco, A-1 Components

Leak Detectors - Electronic

CPS, TIF, JCI (Yokogawa), Ritchie, D-Tek, TPI, Fieldpiece

Line Sets - Refrigerant

Mueller, Linesets inc.

Make Up Air Units

Modine

Manifolds / Gauges

J/B, Robinair, Imperial, Weiss, Ritchie, Hilmor

Mini Split A/C Systems

American Standard Mitsubishi, EMI, Comfortaire, Multi-Aqua

Motors

Acme, GE, Marathon, Fasco, A.O. Smith, Emerson, Packard, Baldor, Wellington, Century, U.S. Motors

Oil Control Equipment - Refrigeration

Sporlan, Temprite, ACR, Alco

Oil Separators

Temprite, ACR, Alco, Henry

Oils - Compressor, Vacuum Pump

Nu-Calgon, Virginia, J/B, Robinair, Copeland

Pads - Condensing Unit

Diversitech

Pneumatic Controls

Johnson Controls, KME, Kele, Siemens

Pressure Controls

Johnson Controls, Ranco, Robertshaw

Pumps

Taco, Nu-Calgon, Bell & Gossett, Grundfos, Hartell, Little Giant

Radiant Floor Heating Systems

Infloor, Viega

Radiant Heaters

Superior Radiant Products, Combustion Research

Reach In Coolers - Freezers

Everest, True, Beverage Air, U-Line, Accucold, Summit Appliance

Refrigerant Control Devices

Sporlan, Parker, Alco, Dan Foss

Refrigerant Recovery Systems

Promax, Robinair, Redi-Controls, Ritchie, Appion

Refrigerant Recovery Tanks

Worthington, Manchester Tank

Refrigerants

Arkema-Forane, Chemours-Freon, Dynatemp, Honeywell-Genetron, Icor

Relays

Honeywell, RBM, Mars, Supco

Sheet Metal & Fittings

Southwark

Solder & Brazing Materials

J.W. Harris, Lucas Milhaupt, Turbotorch, Prest-O-Lite

Solenoid Valves - Refrigeration

Sporlan, Alco, Parker

Tanks - D.O.T. Refrigerant

Worthington

Temperature Controls

Honeywell, Johnson Controls, Robertshaw, White-Rodgers, Ranco

Thermometers

Cooper, Fluke, Taylor, TPI, Weiss

Thermostat Guards

Honeywell, Supco, Robertshaw

Thermostats

Johnson Controls, Honeywell, PSG, Ranco, Robertshaw, Supco, White-Rodgers, Aprilaire

Timers - Defrost, Time Delay

Paragon, Mars, ICM, Supco, Ranco, Uniline, Grasslin

Tools - Hand

Hilmor, Malco, Klein, Lenox

Torches

Prest-O-Lite, Turbotorch

Unit Heaters

Modine, King Electric

Vacuum Pumps

J/B, Appion, Ritchie, CPS

Vibration Eliminators

Anaconda, Packless

Walk In Coolers , Freezers

Louisville Cooler, Harford

Water Coolers

Ebco (Oasis), Elkay

Window Air Conditioning

Comfortaire, LG

Zone Control Systems

Robertshaw, Aprilaire, Honeywell, Arzel, Zone First, IO HVAC Controls