About

Johnstone Supply is your one-stop shop, with a variety of options in unitary and specialty equipment, repair and replacement parts, and maintenance supplies for Residential, Light Commercial, Refrigeration and Facilities Maintenance.

electric heating manufacturers, Accumulators & Receivers, Adhesives, Air Conditioning Components, Air Cooled Condensers, Air Distribution, Air Elimination & Vents, Airflow Measurement, Alkylbenzene, Backflow Preventers, Ball Valves, Baseboard, Batteries, Bearings, Belts, Blends and Specialty Hydrocarbons, Blower Assembly, Blower Wheels, Blowers & Assemblies, Blowers & Draft Inducers, Boiler Accessories, Boiler Trim Kits, Boilers, Brazing & Soldering Supplies, Brazing & Soldering Tools, Cabinet Components, Capacitors, Capillary Tubing, Carbon Monoxide Detectors, Caulking & Sealants, Check Valves, Chillers, Chimney Liner, Circuit Breakers, Cleaners & Chemicals, Coil And Tube Cleaning Tools, Coils, Combustion Analyzers, Commercial Controls, Commercial Single Packaged Units, Compressors & Accessories, Condensate Drain Supplies, Condensate Pans, Condensate Pumps, Condensers & Evaporators, Condensing Unit Pads & Covers, Condensing Units, Condensing Units & Heat Pumps, Conduit & Fittings, Controls, Cooling Towers, Cord Caps & Connectors, Couplings, Definite Purpose Motors, Defrost Heaters, Diffusers, Drip Shields, Duct Components & Curbs, Ducting & Sheet Metal, Electrical Components, Electrical Controls, Electrical Installation Supplies, Evaporative Cooler Parts, Evaporator Coils, Expansion Tanks, Expansion Valves, Extension Cords & Cord Sets, Fan Blades, Fan Coil Units, Filter-Driers, Fittings, Flashlights, Fluid Coolers, Furnaces, Fuses, Gas Furnaces, Gas Heat Controls, Gaskets, Gauges, General Purpose Blowers, General Purpose Motors, Generators, Geothermal Units, Grilles, Grounding Rings, Hand Tools, Heat Cable, Heat Exchangers, Heat Kits, Heat Pump Controls, Heaters & Furnaces, Hermetic Parts, High Velocity Air Systems, Hose Clamps, HVAC Equipment, HVAC Misc, HVACR Parts, Hydronic Heaters, Hydronics & Plumbing Equipment, Ice Machines & Parts, Ignition Components, Immersion Low Water Cut-Offs, Indirect Storage Tanks, Infrared Heaters, Inspection Tools, Installation & Maintenance Supplies, Installation Accessories, Insulation, Knobs, Ladders, Leak Detectors, Lighting, Line Sets, Manufactured Housing, Meters, Mineral Oil, Mini-Split Systems, Mixing Valves, Motor Accessories, Motors, Motors & Motor Accessories, Mounting Parts, Mounting Supplies, Multi-Zone Systems, OEM Parts, OEM Replacement Draft Inducers, Oil Control, Oil Furnaces, Oil Heat Controls, Oils, Outlet Boxes, Packaged Terminal Air Conditioners, Pipe Tapes, Plasma Cutters, POE, Portable AC, Power Tools, Pressure Measurement, Pressure Reducing Valves, Pressure Regulators, Pressure Switches, Pressure Washers, Pulleys & Sheaves, Pumps & Parts, PVE, R134A, R134A Alternatives, R22, R22 Alternatives, R32, R404A, R404A Alternatives, R407C, R410A, R454B, Radiant Heat Systems, Radiator Valves, Receptacles, Refrigerant Accessories, Refrigeration & AC Tools, Refrigeration Components, Refrigeration Compressors, Refrigeration Equipment, Refrigeration Valves, Refrigerators & Freezers, Registers, Regulators, Relays, Relief Valves, Residential Unitary Air Handlers, Reverse Cycle Chillers, Room Air Conditioners, Rope & Tie Downs, Safety, Scroll, Semi-Hermetic, Shafts, Sheet Metal Machinery, Sight Glasses, Single Zone Systems, Smoke & CO Alarms, Solenoid Valves, Specialty Evaporative Coolers, Specialty Test Instruments, Speed Controls, Split Systems, Starters, Steam Parts, Supplies, Switches, System Treatments, T&P Valves, Temperature & Humidity Measurement, Terminals & Connectors, Test Instruments, Testing, Tools & Training, Thermostats & Sensors, Tool Storage, Tools, Total Home Systems, Unit Coolers, Valves & Controls, Variable Capacity Systems, Venting Materials, Vertical Packaged Units, Vibration Eliminators, Wall Plates & Covers, Water Coolers, Water Feeders, Water Filtration, Water Heaters, Whips, Wire, Wiring Accessories, Zone Valves