Welcome to Johnston Supply, Inc.
Distributor of Plumbing, Heating, Air Conditioning and Water Well Supplies
Johnston Supply, Inc. is an independent wholesale distributor that serves the residential and light commercial professional contractor. If you are not currently a customer and would like more information about our company please contact a branch location near you. Johnston Supply, Inc. is a privately held corporation founded in 1932 in Marion, Ohio.
The company has six Branch Locations serving the professional contractors in Northern Ohio, Southern Michigan and Northeastern Indiana. Our knowledgeable 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 supporters of the following associations:
- Water Well System Design
- Water Well Pump Repair
- Water Analysis
- Water Softener & Filtration Sizing
- Building Heat Loss and Heat Gain Calculations
- Air Duct Design
- Hydronic Heat System Sizing
American Supply Association
North Central Wholesaler Association
Heating, Air Conditioning & Refrigeration Distributors International
Ohio Water Well Association
National Ground Water Association