Wiegmann Associates
Wiegmann Associates is one of the HVAC industry’s premiere national design/build mechanical contractors.
From HVAC design to systems installation and service, Wiegmann has focused on innovative, energy saving and cost-effective HVAC solutions since 1995.
06/19/2026
Several of our employees recently celebrated more than 10 years on Team Wiegmann!
Help us congratulate Kyle Boschert, Todd Jacks, P.E., Craig Ross, P.E. and Nick Andell.
Thank you for being instrumental to our growth and project excellence.
06/09/2026
For the last 14 years, Team Wiegmann has come together to support pediatric healthcare in St. Louis by donating a portion of their wages to the annual St. Louis Children's Hospital KIDstruction campaign.
This year, we held a fun contest to engage our team during the weeklong campaign. The challenge: Guess the team member based on a childhood photo.
To learn more and donate through our official KIDstruction team page, visit
https://support.stlouischildrens.org/site/TR/KIDstruction/General?pg=team&team_id=5135&fr_id=1400
06/05/2026
We are thrilled to welcome Levi McRoberts to the Wiegmann team as a Controls Technician!
He brings nine years of HVAC industry experience, including as a lead installer, general manager and sales account manager for commercial, industrial and residential clients.
06/02/2026
Wiegmann was proud to support local women pursuing a career in construction as a Gold sponsor of the NAWIC Annual Scholarship Golf Tournament. The proceeds help fund scholarships given by NAWIC St. Louis #38.
Shown (Left to Right)
Wiegmann Associates' Grant Wiegmann and Craig Ross, P.E.
with their guests from Kadean Construction Company, Nick Walls and Ryan Grass.
05/27/2026
Great teamwork isn't just for the office!
Team Wiegmann Associates recently enjoyed a company outing at Chicken N Pickle in St. Charles. We served up friendly competition and shared laughs over delicious food.
Wiegmann Associates Chicken N Paddle - Descript By Rachel Brown, May 27, 2026
05/25/2026
05/22/2026
>> Mental Health Awareness Month >
Stress and burnout increase risk. Caring for mental health helps everyone go home safe.
Fuel Your Body, Support Your Mind >>
Nutrition and hydration impact energy, mood, and concentration.
It’s OK to Take a Pause >>
Short breaks reduce mistakes and help maintain focus throughout long shifts.
Communication Reduces Stress >>
Clear expectations and open dialogue lower pressure and improve teamwork.
Disconnect to Recharge >>
Time away from work helps restore mental and physical energy.
05/22/2026
Help us welcome our new Controls Technician — Evan Anderson!
Our Controls Technicians are responsible for assisting operations with day-to-day maintenance, identifying and escalating advanced technical issues, and troubleshooting complex mechanical, electrical, and pneumatic systems. They also lead continuous improvement initiatives by utilizing downtime analytics to solve and implement system enhancements.
05/15/2026
>> Mental Health Awareness Month
05/07/2026
This is what All in Together — Construction Safety Week's 2026 theme — means for Team Wiegmann.
>> Your safety choices matter—every task, every day.
>> Safety isn’t limited to the jobsite. In our offices and shops, everyday potential hazards deserve the same attention.
>> See something unsafe? Say something. No concern is too small and every concern voiced is welcome.
>> Safety includes mental health. Take breaks. Manage your well being. Look out for each other.
Construction Safety Week 2026: We’re All In Together - Wiegmann Associates This week marks Construction Safety Week 2026, and the industry theme says it all: All In Together. Built on three pillars—Recognize, Respond, and Respect—this year's theme reminds us that safety isn't a solo act. It takes every person on every jobsite committing to the same standard. Research a...
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650 Fountain Lakes Boulevard
St. Charles, MO
63301