Geothermal.contractors

Heat-Flow Mechanical, formerly GeoTech Mechanical, is a family-owned geothermal heating and cooling specialist serving Brown City, Michigan and surrounding areas with over 10 years of industry experience. Licensed and insured, the company specializes in closed-loop geothermal system installation, custom loop-field design and sizing based on demand calculations, professional geothermal drilling, and comprehensive system maintenance. Heat-Flow handles every phase of installation and repair, tailoring loop fields to each property's specific requirements for optimal efficiency. Beyond geothermal, the team installs and services radiant floor heating, boilers, conventional furnaces, and air conditioning. With a 4.8-star Google rating from verified reviews, the company demonstrates consistent craftsmanship and customer satisfaction. Heat-Flow Mechanical serves Lapeer, Sanilac, and St. Clair counties, providing flexible financing options to make geothermal upgrades accessible. Verified active operator per https://heat-flowmechanical.com + BBB A+ profile (Bundle 4 audit 2026-05-28)