ST. LOUIS, MO – Wiegmann Associates has completed work on the new $25 million, Washington, MO headquarters and manufacturing facility for Melton Machine & Control Company (MMCC), a manufacturer of automated robotic welding systems. Wiegmann Associates was the mechanical Engineer of Record and installing HVAC contractor for the design/build project, which included an extensive HVAC energy efficiency package. Contegra was the general contractor. Gray Design Group was the architect.

The new 367,000-square-foot facility more than doubles the size of MMCC’s previous facility, also located in Washington. Energy efficiency and long-term cost savings were primary project goals since MMCC plans to occupy the building for many years. Wiegmann recommended and implemented a package of energy efficiency upgrades to eliminate reheat, reduce fan energy and save large amounts of energy that are typically used to heat and cool outdoor air. These energy-saving solutions will reduce MMCC’s HVAC operating costs by more than $50,000 per year. The payback period for these upgraded energy efficiency measures is fewer than 3 years.

A Rooftop Variable Air Volume (VAV) system and a Building Automation System with 63 zones achieve optimal comfort, climate control and efficiency in the 74,000-square-foot office area, which includes a two-story boardroom, kitchen, numerous offices and training rooms. High-efficiency packaged rooftop units serve the expansive manufacturing area, which features overhead bridge cranes, wash bay, paint booth, compressed air and welding gas loop piping and flex drops for specialized automated arc welding machine areas.

Melton Machine & Control Company designs, manufactures, and integrates automated systems. They have been in business since 1970.

Wiegmann Associates is a St. Louis-based mechanical contractor and a national leader in design/build HVAC projects. Since 1995, Wiegmann Associates has engineered and installed innovative, energy-saving and cost-efficient HVAC solutions, refrigeration systems and automation controls for clients in a wide range of industries, including senior living, food and beverage distribution, warehouse, healthcare, commercial and industrial. Wiegmann also provides 24-hour preventative maintenance programs and service in the St. Louis region. Wiegmann is ranked among the top 50 specialty contractors in the Midwest by Engineering News-Record and the largest St. Louis mechanical contractors by the St. Louis Business Journal. For more information, visit or call (636) 940-1056.

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