Harty Mechanical, Inc. is a Minnesota union contracting corporation that completes all phases of mechanical installations for new construction, design build, remodeling, and service. We specialize in geothermal design and installation of complete, energy-efficient systems for residential, commercial, industrial, and recreational facilities. Our team of trained technicians provides exceptional service, maintenance, and repair for all types of mechanical systems, including HVAC, plumbing, and piping.