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Johnston Supply, Inc. is a privately held corporation founded in 1932 in Marion, Ohio.
The company has grown to six Branch Locations serving the professional contractors in Northern Ohio, Southern Michigan and Northeastern Indiana. Our trained staff can assist you with product selection, sizing and design for Plumbing, HVAC, Radiant Heat, Water Filtration, Water Well Pumps and Dewatering Applications.
We are proud members of the following associations:
North Central Wholesaler Association
Heating, Air Conditioning & Refrigeration Distributors International
National Ground Water Association