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industrial building
Industrial
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Quaker Plant
Sporlan Valve Division
General Motors Plant
Commercial
Drury Hotel
Centene Building
Plaza Clayton
St. Louis Public Library Downtown
Cardinal Rigali Center
hospital building
Healthcare
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Barnes Hospital, Saint Louis
Delmar Gardens, Chesterfield
Siteman Cancer Center, Saint Louis
Alton Memorial Hospital, Alton
Blessing Hospital, Quincy
Centerpointe, St. Charles
Mercy Hospital, Saint Louis
Cardinal Ritter Senior Saint Louis
St. Joseph Hospital Shiloh
free space area
Education
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Southern Illinois University Housing
Belleville East HSD
Chaminade Prepatory College
Fontbonne University
Rosati-Kain High School
Francis Howell School District
Decatur Schools
Herrin CUSD
Hazelwood School District
old castle
Government
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Ft. Lenord Wood Base
Scott Air Force Base
GSA Building
Saint Louis City Hall
Maryland Heights Government Center
Williamson County Admin. Building
Electic Lines
Electric utilities
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Ameren
Berkeley Electric Company (South Carolina)
Big Rivers Energy (Kentucky)
Boone Electric (Columbia MO)
Maryland Heights Government Center
Callaway Electric (Fulton MO)
Central Electric Co-op (Jefferson City MO)
Cuivre River Electric (Troy, MO)
Gibson Electric (Kentucky)
Jackson Purchase Co-Op (Kentucky)
Kootenai Electric (Idaho)
Midwest Electric (Michigan)
Navopache Electric (Arizona)
Pee Dee Electric (North Carolina)
Traverse Electric (Minnesota)
Union Power (North Carolina)
Whitewater Electric (Indiana)
aesthetics cafe
Restaurants
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4 Hands Brewery
Ballpark Village
Big Rivers Energy (Kentucky)
City Foundry
Jimmy Johns
Mellow Mushroom
Orange Theory
Salt + Smoke
Scooters Coffee
Shake Shack
Sugarfire

Testimonials

Hear from the people and companies we’ve proudly served. From residential contractors to commercial projects and strategic partners, these stories highlight our long-standing commitment to delivering excellence, building trust, and driving results across the HVAC industry.

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Working with TMi has been nothing short of a blessing for Allied Plumbing and Heating! Working together with Corey Maynard to get our customers the best that Daikin has to offer has been awesome! His team at TMi has been the easiest and best company to work with by far. TMi definitely makes it easier to give our customers what they need, and they leave us comfortable knowing that they have our back. Thank you so much for making my job easier!
Michael Miller
Michael Miller
Allied Heating, Cooling & Plumbing in Springfield, IL
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We partnered with Lennox for over 50 years. It was a great journey. Like every business that has been around for any length of time, the business decides to do things differently. That is the case with Lennox. We have been searching for years for a line of equipment that is distributed by a reputable company that has an excellent representative with a vast knowledge of the industry and really understands customer service to the high level we deliver to our customers. In addition, we want a distributor who has the items in stock, can provide excellent technical support, and provides top-notch training. Daikin-TMI checks all of those boxes so far. I have known Mike Mascia since the days when he was part of the local Lennox team. He was awesome then and that has not changed. Mike understands the industry, our local market, and the very high expectations Al-Don IAQ expects. In addition, I know Mike would only be a part of a team/organization that can and would deliver to meet the needs of the challenges we face today and the future. Daikin-TMI provides the quality of equipment we need to serve our customers along with good technical support and training. We have enjoyed the journey we have experienced with Mike and Daikin-TMI.
Jeff Miller
Owner of Al-Don Heating and Cooling in St. Louis, MO
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Our relationship with Thermal Mechanics goes back nearly 25 years, and during that time they have consistently delivered strong products and reliable support. For the past 10+ years, I?ve had the pleasure of working closely with Dan Rettenmaier, and he has become one of the best equipment reps I?ve worked with in my career. Dan brings a rare mix of technical expertise, responsiveness, and problem-solving that makes him an indispensable resource. He regularly goes above and beyond his role, stepping in to help with whatever our business needs, and we know we can always count on him to get issues resolved quickly. With Dan leading the way and backed by the Thermal Mechanics team, we have a partner who not only provides excellent products but also the service and commitment that make a real difference to our success.
Benjamin Vacca
CEO, National Design Build Services in St. Louis, MO
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Dakin TMI has consistently proven to be a reliable and responsive vendor for WWT. Their team demonstrates an exceptional level of professionalism, technical expertise, and attention to detail across every phase of our partnership. From timely deliveries to proactive communication, Dakin TMI goes above and beyond to ensure that our needs are met?often before we even articulate them. Their commitment to quality and customer service makes them a valuable extension of our own team, and we look forward to continuing our collaboration for years to come.
Bill Hoelzer
Lead Critical Facilities Engineer at World Wide Technology
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Partnering with TMI/Daikin as our distributor has been one of the most rewarding decisions we’ve made at Lakebrink Heating & Air Conditioning. The entire team is made up of wonderful people who truly care about our success. Over the years, we’ve built strong friendships with our territory managers — relationships that go far beyond just business. The support from their marketing department has been exceptional. Whether it’s co-branding materials, seasonal campaigns, or creative advice, they’re always ready to help us grow. And when it comes to technical or product issues, the service support team is consistently reliable, responsive, and knowledgeable. We value this partnership not just for the products and services they offer, but for the people behind it who genuinely want to see us thrive!!
Allen Eaker
Owner of Lakebrink Heating and Cooling in Union, MO
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At Top Notch Heating, Cooling, and Plumbing, we pride ourselves on delivering quality service and trusted solutions to our customers — and working with Daikin/TMI has elevated our ability to do just that. Their innovative product line, strong dealer support, and commitment to excellence make them an invaluable partner. We especially want to recognize Matt Brewer, our territory manager, whose dedication, responsiveness, and deep industry knowledge have made a real impact on our success. Matt doesn’t just support us — he works alongside us, offering timely solutions, insightful training, and a personal touch that makes all the difference. With Matt and the Daikin/TMI team behind us, we feel confident and equipped to grow stronger every day. It’s more than just a partnership — it’s a relationship built on trust, support, and shared goals. That’s why we love working with Daikin/TMI.
Kim Meyers
Owner of Top Notch Heating, Cooling, Plumbing in Lenexa, KS