Minnesota and Western Wisconsin’s Quality HVAC Equipment Supplier For over 50 years, TMS Johnson has supplied quality HVAC equipment to the contracting and engineering communities of Minnesota and Western Wisconsin. TMS Johnson is committed to providing the best products and services while meeting the most challenging HVAC applications. Using integrity and customer service as the cornerstone of our business we look forward to servicing your needs. TMS Johnson is structured in three distinct sales and marketing groups: Air Distribution, Applied Mechanical Products , Control Products. Our company and staff are setup to provide both our customers and manufactures the expert knowledge needed and resources to fully support them. Our goal is to focus the proper knowledge within each group and work between departments to provide the best possible support to our customers.