About AT Klemens

Since 1928

AT Klemens was founded as a sheet metal shop in 1928. From this heating, ventilating, and air conditioning beginning, we have grown and expanded through the years. The addition of roofing, service, plumbing, and electrical departments has made AT Klemens a multi-service company. Our ability to perform as a prime contractor or as a one-source subcontractor, responsible for the coordination of several crafts, has been a substantial benefit to our customers.

We provide residential and commercial design, sales, and installation and our service personnel are available to properly maintain and repair all systems.

AT Klemens has successfully completed design / build projects as well as plan and specification jobs throughout Montana and several other Western states. We remain competitive through experience and team effort, take pride in our work, and maintain high standards of quality and service in all phases of our operation.

Customer satisfaction has been the foundation of our growth since 1928 and will continue to be the basis upon which our present and future goals are predicted.

Residential Services

AT Klemens' service department offers service and repairs on all brands of heating and air conditioning equipment. Our technicians are trained to provide customers with the highest quality service. All work is fully guaranteed.

  • Periodic maintenance agreements
  • Service contracts
  • Warm air systems
  • Steam and hot water boilers
  • Authorized Carrier and Mitsubishi dealer

Commercial Services

AT Klemens' service department offers service and repairs on all brands of heating and air conditioning equipment. Our technicians are trained to provide customers with the highest quality service. All work is fully guaranteed.

  • Periodic maintenance agreements
  • Service contracts
  • Warm air systems
  • Steam and hot water boilers
  • Authorized Carrier and Mitsubishi dealer
  • EPA Certified