About Us

About Us

Your environment. Engineered solutions.

For almost 60 years, Daikin-TMI has been the go-to resource for every aspect of HVAC solutions in the Midwest. With unparalleled access to Daikin systems and parts, we have the equipment and components to support commercial climate control systems, residential HVAC dealers, and large facility owners.

We design and install sophisticated building control solutions. We offer engineering assistance to mechanical engineers, mechanical contractors, and consulting firms that provide HVAC design and service to owners, architects, and end users. Our highly skilled Service Team is ready when the situation extends beyond the wheelhouse of the average contractor.

We have unparalleled Daikin training capabilities with two state-of-the-art facilities and a Daikin Roadshow Training Trailer that brings the classroom to you.

For all the residential contractors in our select network, Daikin-TMI has always been—and continues to be—an extension of their team. Our products and services include:

  • System Design & Engineering Resources
  • New & Replacement HVAC Equipment
  • Integrated Building Controls
  • Mechanical & Building Controls Service
  • Planned Maintenance Contracts
  • Building Controls System Monitoring
  • Certified OEM Replacement Parts
  • Extensive, Hands-on Training for Daikin Parts and Equipment
  • 24/7 Emergency Service & Technical Support

As a Daikin company, we proudly offer Daikin equipment for residential and commercial properties—and bring the know-how to use them. With extensive Daikin training, we have an unmatched knowledge base at our disposal to help us help you identify where to use Daikin systems and how best to engineer them into place. Everything we do is designed to help you bring your customers seamless solutions to climate control problems—including the biggest one about saving energy and living greener.


Thermal Mechanics, Inc. was founded in 1966 as a representative of McQuay HVAC Equipment.

Over time, the company evolved from a traditional manufacturer’s rep to a hands-on firm offering design and engineering assistance services, focusing on these value-added solutions.

In 2006, Daikin acquired McQuay, and TMI’s relationship with Daikin began. In 2012, the company expanded into Western Missouri and Kansas. TMI would expand further in 2018 to handle Daikin’s residential line, serving as the distributor for HVAC dealers in Kansas, Missouri, and downstate Illinois.

Daikin-TMI also branched out to offer parts, HVAC equipment, and parts from other manufacturers for over 35 other brand names. Combine this with our unparalleled expertise and first-rate service, and there isn’t a better partner for your business.

In 2018, TMI ranked at #43 among the 50 Fastest Growing Companies in St. Louis.

In 2019, after 13 years of a successful, growth-based relationship, Daikin formally acquired TMI, and Daikin-TMI was born.

But we weren’t done growing yet!

In January 2022, Daikin-TMI acquired Heaven Engineering, which was a Daikin-Applied representative in Wichita, KS. In Spring 2024, we’ll open our third state-of-the-art training center in Wichita.

Here are the solutions we offer today.

Commercial Solutions

Daikin-TMI’s Commercial Solutions division is renowned for superior HVAC system design, providing diverse products from Daikin and other top brands to satisfy varied HVAC requisites. With an inventory inclusive of Daikin VRV systems, rooftop units, high-capacity chillers, Airside equipment, and other high-end products, we are backed by the trust of mechanical and electrical engineers and reputable consulting firms, thanks to our unwavering commitment to quality and excellence.

Our seasoned engineers consistently match the pace of ever-evolving technological advancements and offer in-depth engineering support, guiding the design of effective and efficient HVAC systems that meet the unique needs of every environment. This proficiency, coupled with our experience in successfully handling prominent large-scale projects, emphasizes our capability to provide trusted and reliable HVAC solutions.

Beyond simple provision, we shape HVAC system solutions that amplify comfort and safety in individual buildings, multi-building facilities, and larger campus environments. Moreover, we service a broad spectrum of facility types, showing our versatility. Assisting in seamless operations, our team offers unmatched HVAC solutions – in collaboration with Daikin-TMI, attaining the optimum balance of comfort, productivity, and safety in any building is a reality.

Aftermarket Solutions Group

Daikin-TMI’s Aftermarket Solutions Group (ASG) is the premier choice for aftermarket parts and equipment in the Midwest. ASG offers extensive inventory and fast ordering processes to provide a one-stop solution for warranty and parts needs. Our team of expert technicians, have unmatched expertise and can provide efficient, personalized service. Note also that ASG is not limited to Daikin and can provide and support a wide range of products from other leading manufacturers. We also offer exclusive value-added solutions to enhance equipment efficiency, EPA-certified refrigerant reclamation services for environmental responsibility and regulatory compliance, and superior availability and industry expertise for tailored solutions.

Partner with Daikin-TMI’s ASG for:

  • One-stop solution for warranty and parts needs
  • Online ordering via our exclusive app
  • Expert technicians with specialized knowledge of Daikin systems
  • Ability to service a wide range of products from other leading manufacturers
  • Exclusive value-added solutions for equipment efficiency
  • EPA-certified refrigerant reclamation services for environmental responsibility and regulatory compliance
  • Superior availability and industry expertise for tailored solutions.

Residential Distribution

Daikin-TMI’s Residential Distribution division presents a robust suite of HVAC solutions and exhaustive support tailored for residential contractors. The division enables contractors to join the Daikin Comfort Pro (DCP) network, providing support across St. Louis, Kansas City, Wichita, and other regions, and exclusive access to Daikin equipment and dealer programs aimed at significant growth and enhanced service delivery.

Our residential division offers financial benefits, such as year-round rebates, retail selling spiffs, and unique marketing Accrual Funds, allowing dealers to amplify their businesses through a comprehensive marketing package that includes strategy development and targeted marketing tactics execution.

Daikin-TMI further optimizes the dealer experience with effortless ordering options through our online price book and a mobile ordering app, offering real-time data access for prompt estimates. Additionally, flexible financing, including options like EGIA or Goodleap’s Financing programs and an ever-ready inventory for expedited delivery, demonstrate a high priority on project urgency.

Daikin-TMI provides comprehensive technical training and support to bolster dealer expertise, including sophisticated training facilities with fully operational equipment in St. Louis and Kansas City and a mobile Daikin Roadshow Training Trailer for hands-on experience. We also offer ongoing training programs that qualify for continuing education credits, or CEUs, helping technicians keep their licenses active or earn new certifications.

In essence, partnering with Daikin-TMI’s Residential Distribution division provides an avenue to product excellence and substantial financial and business growth.

TMI Service Department

Daikin-TMI’s Service Team handles high-tech heating, cooling, ventilation, and air conditioning systems for corporations, large facilities, and campuses. With our focus on excellence and customer satisfaction, we are dedicated to delivering exceptional results and meeting your specific HVAC needs. As part of Daikin, we have unique access to genuine parts, ensuring efficient repairs. With our highly trained technicians and continuous improvement initiatives, we stay up-to-date with industry advancements to provide top-notch service.

When you partner with our Services Team, you get:

  • Highly trained technicians with a minimum of five years of experience.
  • Expertise in troubleshooting and repairing complex high-tech HVAC systems.
  • Exclusive access to genuine Daikin parts for efficient and reliable repairs.
  • Quick access to parts and equipment from other top manufacturers.
  • Continuous improvement and unparalleled knowledge of industry advancements.
  • An intense focus on technical excellence and customer satisfaction.
  • Ability to handle both Daikin-specific technologies and systems from other manufacturers.
  • Peace of mind knowing that we are dedicated to providing solutions for complex HVAC problems at the highest level.


Daikin-TMI Controls is your strategic partner in providing innovative HVAC and automation solutions for commercial properties in Missouri, Kansas, and Southern Illinois. Our state-of-the-art Automated Temperature Control Systems and exceptional engineering capabilities elevate building ecosystems into smart and efficient spaces. We offer comprehensive turnkey solutions, personalized service programs, and expertise in sustainability and recommissioning to ensure optimal performance, energy efficiency, and comfort. With our knowledge, skills, and customized control systems, we are ready to help you transcend the ordinary and enter a new world of HVAC Controls excellence.

Daikin-TMI’s Controls Team brings you:

  • Automated temperature control systems for unparalleled comfort.
  • Building Automation Solutions (BAS) to boost operational performance.
  • Energy Dashboards for real-time energy insights.
  • Personalized turnkey programs tailored to architectural needs.
  • Unmatched expertise in integrating control systems for harmonizing efficiency and comfort.
  • Service support for all stages of the project, even if the system wasn’t purchased from us.
  • Meticulous energy audits to find hidden efficiencies.
  • Focus on sustainability and green architecture.
  • Recommissioning and Continuous Commissioning services for lasting performance and efficiency.
  • Enhanced ROI with reduced energy consumption and extended system longevity.

Training And Education

Daikin-TMI’s Education and Training Program is the industry leader for Daikin parts and equipment education. We operate cutting-edge training centers in St. Louis and Kansas City, with a third soon to open in Wichita. These centers are equipped with fully operational, state-of-the-art Daikin systems, providing a hands-on training experience for HVAC contractors across the Midwest.

Daikin trains our expert instructors on the latest and best-selling Daikin products, and these men and women bring years of experience to each course. The curriculum combines theoretical classroom lectures with practical learning, ensuring your technicians can successfully handle the most demanding Daikin installations and repairs.

The Daikin-TMI Roadshow Training Trailer is an innovative solution for those unable to access our physical centers. This mobile facility is fitted with operational Daikin systems, allowing us to deliver a similar hands-on training experience at your location.

The St. Louis and Kansas City training centers also offer a spacious conference room, providing an additional site for advanced educational opportunities.

Daikin-TMI’s Education and Training Programs are robust and flexible, preparing your team for the most challenging situations. Our St. Louis and Kansas City Training Centers, the future Wichita center, Roadshow Training Trailer, and the St. Louis conference room are all designed to ensure you and your team become experts on Daikin equipment on your schedule and at your convenience.

Facilities management today poses unique and complex challenges. One thing that remains unchanged is the demand for reliable, effective, easy to use control and conditioning equipment that enables businesses to go about their daily operations without inconvenience or interruption to their environment. When you need service and support, we are there electronically or in person to advise, Instruct or repair 24 hours a day. Seven days a week. At TMI, we provide equipment solutions that keep businesses focused on business. Whether we are designing the building automation system for a standalone building or developing applications for a multi-site facility, TMI enjoys access to the most advanced, flexible and innovative controls and HVAC systems available.

We represent a broad base of manufacturers offering efficient, flexible equipment solutions. Look to us to provide you with the finest high-performance, engineered systems Including make-up air systems, water chilling machines, cooling towers, room fan coil units, unit ventilators, packaged roof or through-the-wall air conditioners and water source heat pump systems. Whatever your automation system needs, we are committed to providing you with valuable, easy to use solutions, service and support for the life of your facilities.

Get In Touch

St Louis, MO

(636) 532-1110

Kansas City, MO

(816) 298-6281

Wichita, KS

(316) 218-9050