Tweet-Garot Mechanical, Inc.



For over 100 years, Tweet-Garot’s goal has been the same, to exceed the expectations and mechanical contracting and service requirements of our many customers. Tweet-Garot Mechanical has established itself as an “innovator” in the industrial and commercial service industry. With a strict emphasis on customer satisfaction, each service agreement Tweet-Garot designs is tailored to fit the client’s requirements and formulated to meet the specifications of the facility. Building commissioning, through partnership with facility managers, assures that the mechanical system is functioning at peak efficiency and is receiving the preventative maintenance that is required, thereby reducing the carbon footprint. With our 20+ skilled service technicians, who average in excess of 15 years of experience each, our service department continually justifies its excellent reputation for delivering assistance “on time, on budget, on quality, safely.” Our technicians are factory trained and certified in all major manufacturers of boilers, chillers and associated plumbing and HVAC equipment, specializing in certified factory start-up and warranty work. From our two locations in Green Bay and Wisconsin Rapids, WI, Tweet-Garot Service offers a wide range of assistance including 24-hour emergency service, maintenance programs, retrofits, on-site maintenance, performance contracting and systems analysis. Our Service staff is dispatched via our GPS program to minimize response time and maximize resource efficiency. Our technicians carry iPad tablets linking them to complete service records, system information, and manufactures’ manuals and websites. This keeps them apprised of the most up-to-date information and allows the best and fastest service to our customers. In addition to our Service Division, Tweet-Garot Mechanical has distinguished itself as a leader in the fields of process piping, sheet metal and plate fabrication, industrial ventilation, HVAC and plumbing. With over 80,000 square feet of fabrication facilities, we can produce rectangular ductwork from our automated coil line, spiral ductwork of all sizes and gauges, industrial ductwork, process piping spools, tanks, piping assemblies or pre-fabricated plumbing assemblies. T/G fabrication allows us to meet your special requirements while assuring schedule adherence, the highest quality and significant project savings. Industrial make-up air systems, dryer ductwork, pocket ventilation systems, material conveying systems, dust collection and exhaust systems all start in T/G fabrication facilities. Process HVAC, plumbing and piping systems start in fabrication when schedules demand and/or allow the efficiency and savings that are inherent in fabrication. Tweet/Garot also has an extensive background in the design, coordination, fabrication and installation of industrial process piping systems. We utilize fast-track construction methodology, CAD system technology and quality improvement in all that we do to successfully work around our customers’ demanding schedules. Tweet/Garot’s Certificates of Authorization include ASME “PP”, “S”, “U” and National Board “R” stamps. Our on-staff Engineers (3), LEED AP’s (2) and LEED Green Associates (2) allow us to provide the highest level of client comfort and customer satisfaction. Our Design/Assist and Design/Build capabilities address the owner’s needs directly, provide a timely design response, and significantly expedite a construction schedule. As important as the Service and Satisfaction of our customers is the Safety of both our customers and our employees. Tweet/Garot just recently marked 10 years without a lost-time injury! We’re looking forward to meeting you and providing you with our Tweet/Garot Quality Customer Service Experience.


Air Conditioning, Heating, Plumbing, Building Automation, Building Operations, Energy Savings Solutions, Test and Balancing, Commissioning/Retro-commissioning, Data Center AC Service, Design and Installation, Chiller Replacement and Repair, Boiler Service and Replacement, Water Treatment

States Served:

Alabama, Arkansas, Florida, Georgia, Illinois, Indiana, Iowa, Kentucky, Louisiana, Michigan, Minnesota, Missouri, Nebraska, New York, North Carolina, North Dakota, Ohio, South Carolina, Texas, Virginia, Washington, Wisconsin


Contact Name:

Greg Wierzba

Contact Title:

Service Division Manager

Contact E-mail:


2545 Larsen Road P O Box 11767
Green Bay, WI 54303