About us

ABOUT WIEGMANN

We have focused on innovative, energy saving commercial HVAC solutions since 1995. Today, Wiegmann is one of the industry’s premiere national design/build mechanical contractors and an expert in value engineering.

WHY WIEGMANN

From initial HVAC design to systems installation and service, we are never bound by conventional problem solving. We consider the options. Value engineer the solutions. Present a plan that will save money now, save more in the future.

LEADERSHIP TEAM

At Wiegmann Associates, it’s all about teamwork. Our team has driven Wiegmann to become a national leader in HVAC Design/Build and provide excellent HVAC service to the St. Louis region. Learn more about the Wiegmann leadership team.

COMMERCIAL HVAC SERVICE

We think beyond the immediate repair to long-term savings, energy efficiency and real solutions for the life of your building. Our commercial HVAC service team team is professional, responds quickly, and is available 24/7 for emergencies.

INDUSTRIES

Wiegmann Associates’ experience spans a wide range of industries, including Industrial, Institutional, Government, Food & Beverage, Commercial, Healthcare, Senior Living, Education, Religious and Multi-Family.

NATIONAL CAPABILITIES

Wherever your project is located, Wiegmann Associates will complete on time and within budget. Experts in HVAC design/build and value engineering, we have built projects up to $35M for clients in 42 states and counting.

SAFETY

Wiegmann Associates is dedicated to providing a safe and healthy work environment for all employees, subcontractors and customers. One of our primary missions is to maintain the best safety work practices in our industry.

CORPORATE CULTURE

We have built a team of people who think outside the box. Are excited by technology. Get it done on time. Keep one eye on the ball and the other on the budget. But, above all, people who put client needs first.