Join the world's largest HVAC company, named by Forbes as one of America's Best-In-State Employers 2025!
Company Summary:
Founded in 2000, Thermosystems, a member of the Daikin group, is a manufacturer’s representative specializing in commercial heating, ventilation, and air conditioning (HVAC) products and controls. Our mission is to be the trusted partner behind complete HVAC solutions, bringing the expertise and guidance our customers deserve—because better buildings start with better partners.
Headquartered in Elmhurst, Illinois, we operate offices in Elmhurst, Romeoville, Peoria, Chicago, the Quad Cities, and Des Moines. Our organization includes dedicated equipment, solutions, and service sales teams, along with a comprehensive parts and full-service department to support the products we represent.
We offer a comprehensive benefits package that includes medical, dental, and vision insurance; short-term disability and life insurance; paid time off and paid holidays; and a 401(k) with profit sharing, among other benefits. At Thermosystems, you will be encouraged to grow, apply what you know, and see the impact of your hard work.
If you want to learn more about Thermosystems, visit us at www.thermohvac.com today!
Position Overview: As a HVAC Controls Design Engineer you are responsible for delivering a complete control system design based on contract documents (e.g. plans & specifications) or self-developed design/build scope of work. Your design is the operational foundation for our controls contracting business: installation, programming, system integration, functional testing, commissioning, owner-training for a building automation system. You will collaborate with System Integrators, Programmers and Field Engineers to ensure that projects are delivered on time and fully functional.
Responsibilities:
Developing or refining an accurate scope of work for a building automation project
Develop a project bill of materials for project cost estimate
Selecting and specifying appropriate components required for proper operation
Developing and writing appropriate control sequences and coordination with programmers for quality control
Create submittal documents with detailed schematics, sequences of operation, wiring diagrams, panel layouts and details
Design control panel layout for fabrication
Provide technical support to field engineers for installation, functional testing and graphic commissioning
Ensure all controls systems comply with industry standards, codes, and regulations
Stay updated on the latest advancements in HVAC controls technologies and industry best practices
Implement and maintain quality control processes to ensure high standards of workmanship
Understand project scope and execute duties in timeline required
All other duties assigned
Qualifications + Knowledge Skills & Abilities:
B.S. Mechanical Engineer, Electrical Engineering or a related field
Strong problem-solving and decision-making abilities, with a focus on practical solutions that exceed client expectations
Excellent people skills, with the ability to build rapport and establish trust with internal and external stakeholders
Demonstrated ability to work independently and collaboratively in a demanding environment
Working knowledge using Microsoft 365 suite + Visio + Bluebeam + Niagara Workbench
The typical annual base salary for this position ranges from $70,000 - $90,000 in Illinois. The range displayed represents the pay range for all positions in the job grade in which this position falls. Individual base pay will depend on a wide range of factors including your skills, qualifications, experience, and location.
If you're looking for an engaging career with growth opportunities in a supportive environment, you'll love a career at Thermosystems!
Top Skills
What We Do
Daikin Applied delivers superior air quality and energy efficiency to every solution with innovation in advanced technology, IoT, and next generation compressors. Daikin branded products, solutions, and services are sold through a global network of dedicated sales, service, and parts offices.
Daikin Applied’s parent company, Daikin Industries, Ltd. reports revenues in excess of $20 billion and has more than 67,000 employees worldwide, making it the largest HVAC manufacturer in the world. Daikin Industries, Ltd. has more than 90 production sites worldwide and works with customers in more than 150 countries.







