Industries we work with.

We started in 1939 from humble beginnings, but have enjoyed steady growth by focusing on our clients. We’ve had many firsts throughout our history:

• Installed one of the first large central air conditioning systems in the Leamington Hotel in downtown Minneapolis
• Designed the first “Hot-Gas-By-Pass” system and “Ambient Lock-Out” control used in refrigeration systems
• Designed and installed Minnesota’s first central water source heat pump system