Wiegmann News & Updates
Stay up to date with what’s happening at Wiegmann Associates. From project milestones and company events to team achievements, this is where we share the stories behind our work and the people who make it happen.
Date
Title
Feb 20, 2026
Wetstein has joined Weigman Associates as Control Technician, responsible for assisting operations with day-to-day maintenance and more.
Feb 20, 2026
In construction safety, leading indicators are proactive, predictive metrics that measure prevention efforts.
Feb 03, 2026
Today, liability-weary project owners don’t want to just hope you’re safe; they want data-backed proof without having to manage the administrative task.
Jan 30, 2026
Melissa Sheehan has joined Wiegmann Associates as Payroll Specialist. Sheehan is responsible for efficiently managing the payroll process and ensures compliance with tax law.
Nov 20, 2025
Wiegmann Associates has been ranked on multiple prestigious lists for its significant growth and position in the industry.
Oct 06, 2025
Team Wiegmann was proud to honor the memory of our friend and coworker, Matt Stergos, by participating in the Walk to End Lupus again this year.
Oct 02, 2025
Wiegmann Associates is proud to again be named as one of St. Louis’ Largest Mechanical Contractors by the St. Louis Business Journal. Thank you to our amazing team and clients for fueling our longevity and growth!
Oct 01, 2025
We Raised the Ruff at Wiegmann! For this year’s KIDstruction Week, Wiegmann Associates put a fun spin on things with our own “Guess the Employee-Pet Match” contest to raise awareness for and funds for St. Louis Children’s Hospital.
Aug 28, 2025
St. Louis Business Journal has announced this year’s Fast 50 list of St. Louis’ Fastest Growing Private Companies — and we are excited to be on the list!
Aug 06, 2025
We are proud to support our valued service customer — Riverview Gardens School District — by donating school supplies for their Back-to-School Bash!
Jun 30, 2025
The new $84.5 million, 132,900-square-foot Center for Nursing and Health Sciences located on St. Louis Community College’s Wildwood campus (STLCC Wildwood) is complete with Wiegmann Associates as the Design/Assist mechanical engineer. The new facility, which will open to students in August, will debut 10 new campus programs and increase capacity for the school’s nursing program and other in-demand healthcare and technology careers to benefit the local economy.
Apr 11, 2025
Multiple members of the Wiegmann Associates team joined nearly 40 members of Unified Group at the BIM/Prefab Forum in Fort Myers, Florida, recently to share insights and innovations.
Oct 29, 2024
Recently, Wiegmann Associates was names a Top 600 Specialty Contractor by Engineering News Record.
May 09, 2023
Wiegmann Associates has begun mechanical contracting work on the new Wright City High School for Wright City R-II School District in Wright City, Missouri.
Feb 28, 2023
Wiegmann Associates has begun work on the new Francis Howell North High School in the Francis Howell School District in St. Charles, Missouri.
Feb 10, 2023
Wiegmann Associates has begun work on the new six-story, 308-unit mixed-use development in the Dinkytown neighborhood of Minneapolis, Minnesota.
Jan 19, 2023
Wiegmann Associates has completed work on St. Louis’ first Ferrari dealership, Cavallino Rosso, located at 3000 South Hanley Road.
Dec 14, 2022
Wiegmann Associates named one of St. Charles County’s largest businesses by the St. Louis Business J
Wiegmann Associates has again been named as one of St. Charles County’s largest businesses by the St. Louis Business Journal.
Dec 12, 2022
Wiegmann Associates has been recognized by the St. Louis Small Business Monthly as a 2022 Winning Workplace.
Dec 12, 2022
Wiegmann Associates has been named as one of the top subcontractors in the US by COMPASS.
Nov 21, 2022
Wiegmann Associates has completed HVAC work for the Union At The Grove, a new $42 million, 168-unit multi-family residential development in St. Louis, Missouri.
Jul 26, 2022
Wiegmann Associates has begun work on the new $35.2 million, 150-unit Shelbourne at Chesterfield senior housing development in Chesterfield, MO. Wiegmann is the design/build mechanical contractor and Engineer of Record (EOR).
Jun 24, 2022
Wiegmann Associates Completes New Headquarters for Automotive LED lighting manufacturer, Diode Dynam
Wiegmann Associates completed HVAC work on the new 70,000-square-foot headquarters and manufacturing facility for Diode Dynamics in St. Charles, Missouri
Feb 16, 2022
Wiegmann Associates completed work on the 22-story upscale apartment and retail building, 270 Hennepin Avenue in Minneapolis, MN.
Feb 15, 2022
Wiegmann Associates Completes HVAC Work on Three Ambulatory Surgical Centers for SurgCenter Developm
Wiegmann Associates has completed HVAC work on three new outpatient ambulatory surgical centers for SurgCenter Development in Fremont, Indiana; Crown Point, Indiana; and East Lansing, Michigan.
Feb 08, 2022
Wiegmann has designed an energy-efficient HVAC system to serve the 24-story high-rise student housing complex.
Dec 06, 2021
Wiegmann Associates has been named as one of St. Louis’ fastest-growing private companies by the St. Louis Business Journal. With revenue growth of 64% between 2018 and 2020, Wiegmann ranks 28th in the 50 fastest-growing companies.
Nov 04, 2021
Since Gerry Wiegmann ventured on his own to start Wiegmann Associates in 1995, two things have remained constant for the company — the mechanical contractor specializes in HVAC systems, and a Wiegmann has always been heavily involved in the company’s operations.
Oct 28, 2021
Wiegmann Associates has been named one of the top specialty contractors in the nation by Engineering News Record, the leading international construction industry news magazine.
Sep 16, 2021
Wiegmann Associates has once again been named one of the top specialty contractors in the Midwest by Engineering News-Record, the leading international construction industry news magazine.
Aug 03, 2021
Wiegmann Associates Begins Work on $105 million renovation and Addition Project for Lindbergh High S
Wiegmann Associates has begun HVAC work as part of a $105 million renovation and expansion project at Lindbergh High School in St. Louis, MO. As the mechanical contractor, Wiegmann is installing new HVAC systems throughout the existing Lindbergh High School campus as well as installing new systems for a 250,000-square-foot addition.
Jul 20, 2021
Wiegmann Associates has been awarded a 2021 Sheet Metal and Air Conditioning Contractors’ National Association (SMACNA) Safety Excellence Award.
Jun 21, 2021
Wiegmann Associates has completed HVAC work for two cannabis cultivation facilities in St. Louis, MO. As the Engineer of Record and mechanical contractor for the design/build project, Wiegmann designed and installed a system that adheres to the facility’s strict temperature and humidity requirements.
Apr 15, 2021
With 105 employees and 2020 revenue of $64.45 million, Wiegmann Associates has been named the 5th largest St. Louis Mechanical Contractor by the St. Louis Business Journal.
Jan 28, 2021
Wiegmann Associates Completes Work on Rehabilitation Facility at St. Louis VA Medical Center-Jeffers
Wiegmann Associates has completed work on the new $49 million rehabilitation facility at the St. Louis VA Medical Center-Jefferson Barracks, which serves area veterans and their families.
Jan 14, 2021
Wiegmann Associates has completed work on Amazon’s new distribution facility in Missouri.
Dec 23, 2020
Wiegmann Associates, a St. Louis-based mechanical contractor and a national leader in design/build HVAC projects, is celebrating its 25th anniversary. Wiegmann Associates has now engineered and installed more than $1 billion in commercial HVAC comfort solutions across 42 states.
Sep 08, 2020
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.
Aug 18, 2020
Wiegmann Associates has begun HVAC work on the 22-story apartment and retail building, 270 Hennepin Avenue in Minneapolis, MN. As the Engineer of Record and mechanical contractor for the design/build project, Wiegmann is responsible for designing and installing the HVAC system and a Building Automation System for the entire 480,000-square-foot, multi-use building.
Jul 08, 2020
Wiegmann Associates has been awarded a St. Louis Small Business Monthly’s Family Business Award. The Family Business Awards honors the achievements of family-owned businesses across the Greater St. Louis area.
Apr 13, 2020
As Wiegmann Associates celebrates it’s 25th anniversary, the firm was featured in this month’s Construction in Focus magazine.
Mar 20, 2020
Wiegmann Associates has begun HVAC work as part of a redevelopment of a senior-care facility in Sunset Hills, MO.
Mar 10, 2020
Wiegmann Associates Begins Work on $18 Million Renovation and Expansion Project for Brentwood School
Wiegmann Associates has begun HVAC work as part of an $18 million renovation and expansion project for the Brentwood School District in St. Louis, MO. As the mechanical contractor, Wiegmann is upgrading HVAC systems at the Brentwood High School and Middle School campus and installing new systems for a 17,000-square-foot expansion. K&S Associates is the general contractor and the architect is Ittner Architects.
Jan 22, 2020
Wiegmann Associates Completes Work for Edison District office and Retail Building in Downtown Overla
Wiegmann Associates has completed HVAC work on the new $48.5 million, 126,200-square-foot Edison District multi-use office building in Downtown Overland Park, KS.
Nov 14, 2019
Wiegmann Associates Completes Work forNew Harris House Intensive Inpatient Treatment Center in St. C
Wiegmann Associates has completed HVAC work on the new two-story, 53,000-square-foot Harris House Intensive Inpatient Treatment Center in St. Charles, MO, which was built with future expansion in mind.
Oct 15, 2019
Wiegmann Associates has begun work on the $8 million renovations at the St. Louis VA Medical Center-Jefferson Barracks to replace outdated heating and cooling systems.
Aug 14, 2019
Wiegmann Associates has begun HVAC work on the new $86 million HERE at State College student residential and retail complex located in State College, PA, one block from Penn State University.
Jul 15, 2019
Wiegmann Associates Completes HVAC Work for New St. Louis Community College Center for Nursing & Hea
Wiegmann Associates has completed HVAC work on the new Center for Nursing and Health Sciences located on St. Louis Community College’s Forest Park campus.
Jul 15, 2019
Wiegmann Associates Begins HVAC work for two new Hub on Campus Student Apartment High-Rise Complexes
Wiegmann Associates has begun HVAC work on two new Hub on Campus high-rise complexes near the University of Florida in Gainesville, FL. The projects have a combined budget of $79 million.
Jun 07, 2019
Wiegmann Associates has completed HVAC work for Hubbell Incorporated’s new $12 million, 159,000-square-foot Killark Electric facility located at Fenton Logistics Park in Fenton, MO.
Apr 25, 2019
Wiegmann recently completed HVAC work for the new 48,000-square-foot Ameren Corporate Office in Collinsville, IL, as the design/build mechanical contractor.
Apr 23, 2019
Wiegmann Associates Completes HVAC Work for Retail and Office Building at the Streets of St. Charles
Wiegmann Associates has completed HVAC work for the new $8.3 million retail and office building at the Streets of St. Charles development in St. Charles, MO.
Apr 15, 2019
Wiegmann Associates has completed HVAC work for the new 10,500-square-foot, one-story addition to New Beginnings Lutheran Church in Pacific, MO. Wiegman served as the design/build mechanical contractor.
Mar 26, 2019
Wiegmann Associates was featured in SMACNA Partners for Progress magazine article called Trends and Technology.
Mar 21, 2019
Wiegmann Associates Completes HVAC Work for 60-Suite Assisted Living Facility at Nazareth Living Cen
Wiegmann Associates has completed HVAC work for the new $22.15 million assisted living facility on the Nazareth Living Center campus in St. Louis, MO.
Mar 08, 2019
Wiegmann recently completed the construction of a new high-performance, energy-efficient and cost-effective HVAC system for the new Mainstreet Health & Wellness Suites in Webster, Texas.
Dec 21, 2018
Wiegmann Associates has completed work on the St. Charles County Emergency Management’s new $20 million Emergency Operations Center in O’Fallon, MO.
Nov 06, 2018
Wiegmann Associates Completes Work at new American Outdoor Brands Corporation Distribution Center in
Wiegmann Associates has completed HVAC and Building Automation System work for the new American Outdoor Brands Corporation distribution center in Columbia, MO.
Oct 14, 2018
Wiegmann Associates recently completed work on the new clubhouse at Bogey Hills Country Club in St. Louis, MO.
Sep 27, 2018
The St. Louis-based Wiegmann Associates, a national mechanical contractor, recently installed a museum-quality HVAC system at the historical Soldiers Memorial Military Museum in downtown St. Louis.
Aug 29, 2018
Wiegmann Associates has completed HVAC work at Bellerive Country Club.
May 11, 2018
Wiegmann Associates Begins HVAC Work on New 16-story, 675-Bed Housing for Purdue University Students
Wiegmann Associates has begun HVAC work on the new 16-story, 675-bed RISE on Chauncey student housing property near Purdue University in West Lafayette, IN.
Apr 12, 2018
Wiegmann Associates has completed HVAC work for U.S. Auto Force’s new 87,000-square-foot warehouse in Colorado Springs, CO.
Dec 26, 2017
Wiegmann Associates completed work as HVAC Mechanical Contractor at BJC Evelyn’s House Hospice.
Dec 05, 2017
Wiegmann Associates has completed design/build HVAC and plumbing work as part of a $25 million modernization project at Naval Air Station Whidbey Island in Oak Harbor, Washington.
Nov 13, 2017
Wiegmann Associates has completed design/build HVAC and refrigeration work at a new Quality Custom Distribution refrigerated warehouse in Apopka, Florida. The general contractor was ARCO Beverage Group.
Oct 18, 2017
Wiegmann Completes Design/Build HVAC Work at $18 Million Hoffman Beverage Expansion in Chesapeake, V
Wiegmann Associates has completed HVAC work on the $18 million expansion of Hoffman Beverage in Chesapeake, Virginia. The design/build project included the expansion and renovation of the beer distributor’s 217,392-square-foot beverage distribution center and office.
Sep 19, 2017
Wiegmann Associates has completed an HVAC renovation and upgrade project at Parkway North High School in St. Louis, MO.
Sep 13, 2017
Wiegmann Associates has completed design/build HVAC work at three The Sheridan senior living facilities in the St. Louis region.
Jul 31, 2017
Wiegmann Associates Completes HVAC Work on $17.5 Million Cedarhurst of St. Charles Assisted Living C
Wiegmann Associates has completed the HVAC system at Cedarhurst of St. Charles, a new $17.5 million assisted living and memory care facility in St. Charles, Missouri.
Jul 16, 2017
A brand-new medical office building at the Limelight Healthcare Center in Castle Rock will soon offer a state-of-the-art HVAC system to keep future staff and patients comfortable while also providing cost savings.
Jun 21, 2017
Wiegmann Associates has completed work on the HVAC system at the new 95,880-square-foot CubeSmart Storage facility in Denver.
Mar 02, 2017
Wiegmann Associates has begun work on a HVAC and Building Automation Systems project for Clinica Family Health’s new 65,000-square-foot medical clinic in Lafayette, CO.
Oct 04, 2016
Wiegmann Associates has started construction of three The Sheridan Assisted Living properties in the St. Louis suburbs of Sunset Hills, Chesterfield and Creve Coeur.
Sep 22, 2016
Wiegmann Associates has begun work on The Sheridan Assisted Living facilities in Sunset Hills, Chesterfield and Creve Coeur.
Jul 26, 2016
A direct digital control system will enhance climate control in a 16,800-sf new construction office expansion, which will triple the facility’s existing office area to 28,000 sf.
Jul 05, 2016
Wiegmann Associates Begins HVAC Project for new High Country Beverage Refrigerated Beer Warehouse in
St. Louis-based Wiegmann Associates has begun work on a design/build HVAC project for High Country Beverage’s new 130,000-square-foot refrigerated beer warehouse in Johnstown, Colorado.
May 02, 2016
Wiegmann Associates has completed a design-assist HVAC project for the new GameWorks Denver, a family entertainment center.
Apr 16, 2016
Wiegmann Associates has completed construction of an $800,000 HVAC project for a multi-tenant build-out at Aviator Business Park in Hazelwood, MO. The business park was developed by Panattoni Development.
Dec 16, 2015
Wiegmann Associates Completes Work on LEED Certified Refrigerated Food Distribution Center for The C
Wiegmann Associates has completed work on a new LEED Certified refrigerated food distribution center for The Chefs’ Warehouse in Las Vegas, NV. As Engineer of Record and mechanical and controls construction manager, Wiegmann designed and installed all refrigeration systems, HVAC equipment and a Building Automation System.
Oct 19, 2015
Wiegmann Associates wins Contracting Business Design/Build Award for St. Charles Old Post Office His
Wiegmann Associates won a Contracting Business Design/Build award for their work on the St. Charles Old Post Office historic renovation.