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Thelen offers Design/Build Services for both new and retrofit construction projects in the commercial, residential and industrial markets.

Minnesota's premier sheet metal fabricator, and design/build service.

Thelen’s design/build team combines the experience of a registered professional engineer with skilled mechanical contractors. This allows the design team and the builder to work together to create a system that works, and meets current codes and industry standards.

Our in-house design/build service team takes into consideration initial costs as well as operating costs when designing mechanical systems. The team is committed to delivering the best solution while saving the owner costly design fees. Our approach accelerates project completion by eliminating the middleman. From upfront detailed cost estimates, throughout project construction, Thelen provides a leading single source solution for mechanical systems.

When you partner with Thelen’s design/build team on your next project, you’ll receive:

  • Accurate construction cost estimates
  • Design services (including feasibility studies and preliminary engineering)
  • Plans and specifications
  • Code-approved drawings
  • Design assistance on plumbing and hydronic systems
  • HVAC installation by experienced tradesmen
  • No-hassle project closeout
  • Warranty and maintenance service

Commercial Contract

Located in the Brainerd lakes area, Thelen Heating and Roofing Inc. is Minnesota’s premier single source provider of Commercial Roofing, Heating, Cooling and Ventilation systems for residential and commercial customers.