About

Tessier’s, Inc. is a long-established mechanical contracting and HVAC services company with a rich history dating back to its founding in 1919, making it one of the Midwest’s most experienced providers of commercial and industrial mechanical systems and fire safety services. Building on over a century of service, Tessier’s offers a full suite of solutions including design, installation, maintenance, and repair of heating, ventilation, and air conditioning systems for commercial, industrial, residential, and institutional projects. The company’s mechanical capabilities extend to comprehensive HVAC system design and build, specialty sheet metal and duct fabrication, welding services, temperature control, piping, and preventative maintenance — backed by seasoned professionals and advanced CAD/BIM technologies. In 2020, Tessier’s expanded its offerings by incorporating Midwest Fire & Safety, enhancing its portfolio with fire suppression, fire extinguisher servicing, life safety equipment, and related code-compliance solutions. With branch locations across Brookings, Mitchell, Rapid City, and Sioux Falls, South Dakota, the organization serves a wide array of industries including healthcare, education, manufacturing, commercial construction, and agricultural facilities, adapting solutions to each project’s size and complexity. As part of the APi Group network, Tessier’s leverages additional resources and expertise to support mission-critical system installations and service programs, ensuring high performance, regulatory compliance, and operational efficiency. The company’s core values — safety, service, integrity, teamwork, and stability — are reflected in its proactive approach to problem-solving, value engineering, and customer engagement. By investing in both leading technologies and employee development, Tessier’s has built a reputation as a trusted partner with deep technical knowledge, strong community roots, and the ability to deliver durable, high-quality mechanical and fire safety solutions across the Midwest.

Industries Served

Restaurant, Bar, Hotel, Commercial kitchen, Food truck, Hospitality