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Careers

Better Buildings Start With Better Partners.

At Thermosystems, collaboration and innovation drive everything we do. Our teams tackle challenges together, deliver quality customer service with purpose, and create lasting impact. What truly fuels our success is our people. We invest in ideas, support growth, and empower each other to lead.

We're looking for curious, driven individuals eager to learn and transform as a part of our growing team. Be part of a team that embodies:

Leadership

Hard Work

Solving Problems

Integrity

Empowerment

Teamwork

Learn About Our Story Here

Why Join Us

  • You are self-motivated, driven to succeed, and dedicated helping our broader team achieve goals  
  • You are eager to learn and grow  
  • You take pride in a job well done  
  • Gain access to benefits including: 
    • Medical, Dental, and Vision Insurance 
    • Life Insurance 
    • Short Term Disability 
    • Long Term Disability 
    • 401(k) Profit Sharing 
    • Flex Spending Accounts 
    • Health Savings Accounts 
    • Personal and professional development 
    • Paid Time Off and Paid Holidays 
    • Parental Leave 
    • Tuition Reimbursement 
    • Employee Discounts 
    • And more! 

Thermosystems is an Equal Opportunity Employer. All qualified candidates will receive consideration for employment without regard to race, national origin, gender, age, religion, disability, sexual orientation, veteran status, or marital status. 

We are currently hiring for the following roles:

Our commitment is reflected in our team. Their expertise and dedication drive effective collaboration, whether it’s finding the right solution, sharing product knowledge, or responding to challenges. At Thermosystems, teamwork is at the core of everything we do. We succeed because we work together.

That’s the Thermosystems Way.

Open Positions

Assistant Project Manager (Illinois or Iowa)

The Assistant Project Manager plays a key role in managing the daily operations of our service department. This position oversees scheduling, customer communication, technician dispatch, and project coordination while driving efficiency, financial accuracy, and customer satisfaction. The ideal candidate will bring experience, initiative, and leadership to ensure all service activities align with company goals and standards.

Apply Here
  • Oversee and prioritize the scheduling and dispatching of service technicians based on workload, location, and expertise.
  • Serve as the main point of contact for key customers, managing escalations and complex service needs with professionalism and urgency.
  • Manage all phases of service projects—from scheduling and parts procurement to close-out and invoicing.
  • Collaborate with Service Managers to monitor backlog, forecast labor needs, and ensure profitability and operational efficiency.
  • Review technician reports, time entries, and materials for accuracy prior to billing.
  • Support warranty management, equipment startups, and subcontractor coordination.
  • Partner with accounting to track billing progress, verify invoicing accuracy, and support collections efforts when necessary.
  • Identify and implement process improvements to enhance service delivery and communication flow.
  • Prepare and present service reports, and updates to management.
  • Support and optimize use of service software systems including BuildOps and Microsoft 365 tools.
  • Perform other duties as assigned.
  •  
Responsibilites Collapse
  • Associate or bachelor’s degree in business administration, mechanical engineering, or related field preferred.
  • Minimum 5+ years of experience in service coordination or operations management within the mechanical or HVAC industry.
  • Proven ability to manage multiple service projects and customer accounts simultaneously.
  • Strong financial understanding of billing, cost control, and margin management.

 

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  • Experience using BuildOps or similar service management software preferred.
  • Proficient in Microsoft 365 Suite (Excel, Outlook, Teams, Word, and SharePoint).
  • Exceptional communication, organization, and leadership skills.
  • Ability to work independently and exercise sound judgment in a fast-paced environment.
  •  
Knowledge, Skills, and Abilities Collapse

Sr. Service Coordinator (Romeoville, IL or Iowa)

The Senior Service Coordinator plays a key role in managing the daily operations of our service department. This position oversees scheduling, customer communication, technician dispatch, and project coordination while driving efficiency, financial accuracy, and customer satisfaction. The ideal candidate will bring experience, initiative, and leadership to ensure all service activities align with company goals and standards.

Apply here for Romeoville IL
Apply here for Cedar Rapids IA
Apply here for Des Moines IA
  • Oversee and prioritize the scheduling and dispatching of service technicians based on workload, location, and expertise
  • Serve as the main point of contact for key customers, managing escalations and complex service needs with professionalism and urgency
  • Manage all phases of service projects—from scheduling and parts procurement to close-out and invoicing.
  • Collaborate with Service Managers to monitor backlog, forecast labor needs, and ensure profitability and operational efficiency.
  • Review technician reports, time entries, and materials for accuracy prior to billing.
  • Support warranty management, equipment startups, and subcontractor coordination.
  • Partner with accounting to track billing progress, verify invoicing accuracy, and support collections efforts when necessary.
  • Identify and implement process improvements to enhance service delivery and communication flow.
  • Prepare and present service reports, and updates to management.
  • Support and optimize use of service software systems including BuildOps and Microsoft 365 tools.
  • Perform other duties as assigned.

 

  •  
Responsibilites Collapse
  • Associate or bachelor’s degree in business administration, mechanical engineering, or related field preferred.
  • Minimum 5+ years of experience in service coordination or operations management within the mechanical or HVAC industry.
  • Proven ability to manage multiple service projects and customer accounts simultaneously.
  • Strong financial understanding of billing, cost control, and margin management.
  • Experience using BuildOps or similar service management software preferred.
  • Proficient in Microsoft 365 Suite (Excel, Outlook, Teams, Word, and SharePoint).
  • Exceptional communication, organization, and leadership skills.
  • Ability to work independently and exercise sound judgment in a fast-paced environment.

 

Qualifications Collapse

  • Strong communication skills and attention to detail.

  • Ability to work on multiple tasks at once.

  • Easily adapt to new situations and challenges.

  • High mechanical and electrical aptitude.

  • Works well individually with limited supervision.

  • Highly organized and a reliable team player.

 

Knowledge, Skills, and Abilities Collapse

Human Resources Coordinator (Elmhurst, IL)

The HR Coordinator supports the full employee lifecycle, from recruitment and onboarding to engagement and record management. This role ensures smooth HR operations by coordinating hiring activities, maintaining accurate documentation, and assisting with administrative tasks that strengthen both employee experience and organizational efficiency.

Apply here

  • Assist in facilitating the onboarding process and conduct orientation sessions for all newly hired team members

  • Coordinate the recruitment process, including posting job openings, screening resumes, and scheduling interviews.

  • Plan, coordinator, and oversee the execution of job fairs and recruitment events.

  • Maintain accurate and up-to-date employee records on our digital platform.

  • Coordinator and assist with employee engagement activities.

  • Provide coverage and support for Office Administrator, during their absence.

  • Perform clerical and administrative tasks including drafting letters, memos, and other documents for employees.

  • Assist with various other administrative duties as assigned by the Human Resource Manager.

  • All other duties assigned.

 

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  • Must have a Bachelor’s Degree or equivalent experience.

  • 2-4 years of Human Resource experience is required.

  • Previous experience with Microsoft 365 and SharePoint is required

 

Qualifications Collapse

  • Strong attention to detail.

  • Problem solving and critical thinking skills.

  • Time management and ability to prioritize.

 

Knowledge, Skills, and Abilities Collapse

Project Engineer (Elmhurst, IL)

In this role, you’ll support the sales process by creating HVAC cost estimates, selecting equipment, and preparing technical docs. You’ll also stay current on products and build strong relationships with vendors and customers.

Apply here
  • Generate accurate cost estimates and proposals for HVAC equipment and related systems.
  • Analyze plans, specifications, and other construction documentation to prepare cost estimates.
  • Assist the sales team with HVAC equipment selections for engineers and contractors in professional and timely manner.
  • Prepare technical documentation for equipment selections/submittals.
  • Learn and stay current on HVAC product applications for the manufacturers we represent.
  • Develop relationships with manufacturers, vendors, and customers.
  • Ability to collaborate in team-driven environment
  • All other duties assigned.

 

Responsibilities Collapse
  • Bachelor’s degree in engineering (Mechanical engineering or related discipline) is required.
  • Proven experience in an engineering role is required.
  • 2+ years of experience in the HVAC industry preferred.

 

Qualifications Collapse
  • Enjoy working in fast-paced, multi-tasking environment.
  • Attention to detail.
  • Eagerness to learn new technical product information, software, and processes.
  • Organization and time management stills to prioritize tasks and work on multiple projects at once.
  • Excellent verbal and written communication skills.
  • Superior customer service capability and professional demeanor.
  • Proficient in Microsoft 365 suite and general computer software/applications. Familiarity with Bluebeam a plus.

 

Knowledge, Skills, and Abilities Collapse

Journeyman HVAC Service Technician (Iowa)

The HVAC Journeyman will perform maintenance of HVAC equipment to include repair and replacement of defective equipment, components, or wiring. This role will require intermediate to advanced independent diagnostics, troubleshooting, pipefitting, and brazing of CATI (Chillers) and CATII (Non-Chiller) equipment.

This position is part of the Pipefitters Local 33.

This role can be based in: 

  • Cedar Rapids, Iowa
  • Des Moines, Iowa

 

Apply For Cedar Rapids Here
Apply For Des Moines Here
  • Perform maintenance of all HVAC & applied equipment and on-site start-up procedures.
  • Repair and replace defective equipment, components, or wiring.
  • Perform intermediate to advanced independent diagnostics, troubleshooting, pipefitting, and brazing of equipment.
  • Conduct warranty service application by independently inspecting and testing systems to verify functionality for equipment.
  • Verify functionality of new equipment. Educate customers on proper use of equipment, maintenance schedule, and operating manual.
  • Problem-solve issues using reasoning and logic.
  • Communicate with individuals who installed the system.
  • Program new control systems using touchscreens and computers.
  • Assist the owner’s representatives to demonstrate that the system has been set up properly.
  • Document actions taken on the jobsite to be included with project report.
  • Direct discussions with building owners to assist with ongoing maintenance and service.
  • Prepare wiring diagrams.
  • Wear personal protective equipment when completing service tasks.
  • Complete jobsite hazard assessment prior to initiating service and adhere to safety policies and OSHA guidelines.
  • Demonstrate professionalism in appearance, verbal, and written communication. Interact with customers by offering status reports of service before, during, and after each call.
  • Explain technical information to technical and non-technical audiences.
  • Communicate potential sales opportunities to the sales staff through the quote process.
  • Record and report billing, inventory, timecards, technician tip reports, product quality reports (PQR), and articles as required.
  • Basic data entry and ability to navigate the use of email, internet, word processing programs.
  • Download programs into equipment and micro controllers. Analyze trend data to ensure optimal performance.
  • Ensure standards, policies, procedures, and maintenance of a clean work area are always upheld.
Responsibilities Collapse
  • Associate degree or equivalent from two-year college or technical school, with a certificate in Heating, Ventilation, and Air Conditioning.
  • 5+ years related experience with increasing responsibility; or 7+ related experience; or equivalent combination of education and experience.
  • Valid driver’s license and acceptable driving record.
  • State license or certifications as required by the market.
  • EPA approved Universal Technician Certification required, as necessary.

 

Required Qualifications Collapse
  • Previous experience in mentoring less experienced technicians.
  • Working knowledge of Microsoft Office software products.
  • Current first aid / CPR card, OSHA 10 Certification.
Preferred Qualifications Collapse

Journeyman HVAC Service Technician (Illinois)

The HVAC Journeyman will perform maintenance of HVAC equipment to include repair and replacement of defective equipment, components, or wiring. This role will require intermediate to advanced independent diagnostics, troubleshooting, pipefitting, and brazing of CATI (Chillers) and CATII (Non-Chiller) equipment.

This position is part of the Pipefitters Local 33.

This role can be based in: 

  • Romeoville, IL
  • Peoria, IL
Apply For Romeoville Here
Apply For Peoria Here
  • Perform maintenance of all HVAC & applied equipment and on-site start-up procedures.
  • Repair and replace defective equipment, components, or wiring.
  • Perform intermediate to advanced independent diagnostics, troubleshooting, pipefitting, and brazing of equipment.
  • Conduct warranty service application by independently inspecting and testing systems to verify functionality for equipment.
  • Verify functionality of new equipment. Educate customers on proper use of equipment, maintenance schedule, and operating manual.
  • Problem-solve issues using reasoning and logic.
  • Communicate with individuals who installed the system.
  • Program new control systems using touchscreens and computers.
  • Assist the owner’s representatives to demonstrate that the system has been set up properly.
  • Document actions taken on the jobsite to be included with project report.
  • Direct discussions with building owners to assist with ongoing maintenance and service.
  • Prepare wiring diagrams.
  • Wear personal protective equipment when completing service tasks.
  • Complete jobsite hazard assessment prior to initiating service and adhere to safety policies and OSHA guidelines.
  • Demonstrate professionalism in appearance, verbal, and written communication. Interact with customers by offering status reports of service before, during, and after each call.
  • Explain technical information to technical and non-technical audiences.
  • Communicate potential sales opportunities to the sales staff through the quote process.
  • Record and report billing, inventory, timecards, technician tip reports, product quality reports (PQR), and articles as required.
  • Basic data entry and ability to navigate the use of email, internet, word processing programs.
  • Download programs into equipment and micro controllers. Analyze trend data to ensure optimal performance.
  • Ensure standards, policies, procedures, and maintenance of a clean work area are always upheld.

 

Responsibilities Collapse
  • Associate degree or equivalent from two-year college or technical school, with a certificate in Heating, Ventilation, and Air Conditioning.
  • 5+ years related experience with increasing responsibility; or 7+ related experience; or equivalent combination of education and experience.
  • Valid driver’s license and acceptable driving record.
  • State license or certifications as required by the market.
  • EPA approved Universal Technician Certification required, as necessary.

 

Required Qualifications Collapse
  • Previous experience in mentoring less experienced technicians.
  • Working knowledge of Microsoft Office software products.
  • Current first aid / CPR card, OSHA 10 Certification.
Preferred Qualifications Collapse

Sales Engineer Development Program (Elmhurst, IL)

As a Sales Engineer at Thermosystems, your primary responsibility will be putting together HVAC equipment selections, cost estimates, and submittals. You’ll work on a fast-paced applied sales team assisting engineers and contractors in the design and execution of HVAC projects for new facilities, additions, and renovation projects.

Training

As part of the sales engineer development program Daikin Graduate Engineer Transformed (GET) program.

The GET program is a 6-month immersive learning program for new graduate sales engineers designed to provide foundational HVAC knowledge and experience, build their professional network, and enhance their industry credibility.

The GET program, a blended learning experience that includes online learning and in-person trips to our factories and install sites, is the best opportunity to quickly bring new sales engineers up to speed on not only our products, but also on systems, applications, and real-life situations.

The blended learning program has two components:

  1. Self-paced online learning (videos, assignments, discussion forums, knowledge checks)
  2. In-person modules (factory tours, install sites, group activities, and team projects.)
Apply Here
  • Generate accurate cost estimates and proposals for HVAC equipment and related systems
  • Analyze plans, specifications, and other construction documentation to prepare cost estimates
  • Assist the sales team with HVAC equipment selections for engineers and contractors in professional and timely manner
  • Prepare technical documentation for equipment selections/submittals
  • Learn and stay current on HVAC product applications for the manufacturers we represent
  • Develop relationships with manufacturers, vendors, and customers
  • Ability to collaborate in team-driven environment

Responsibilities Collapse
  • Bachelor of Science in Engineering Required – open to all areas of emphasis.
  • Be a U.S. Citizen or have legal right to work in the U.S. without requiring sponsorship now or in the future..
  • Shows a passion for continuous learning in technical fields, ensuring a solid foundation for understanding and communicating engineering solutions
  • Great leadership skills to motivate and enhance team members’ contributions.
  • Excellent initiative and interpersonal communication skills.

 

Qualifications Collapse
  • Enjoy working in fast-paced, multi-tasking environment
  • Attention to detail
  • Eagerness to learn new technical product information, software, and processes
  • Organization and time management stills to prioritize tasks and work on multiple projects at once
  • Excellent verbal and written communication skills
  • Superior customer service capability and professional demeanor
  • Proficient in Microsoft 365 suite and general computer software/applications. Familiarity with Bluebeam a plus.

 

Knowledge, Skills, and Abilities Collapse

Warehouse Associate (Romeoville, IL)

The Warehouse Associate supports daily operations by ensuring materials are accurately prepared, transported, and delivered to customers and company locations. This role is responsible for organizing and loading products for delivery, completing scheduled pickups and drop-offs, and assisting with general warehouse upkeep.

Apply Here

  • Deliver or pick up orders to customer offices and jobsites.

  • Transfer product between Thermosystems locations.

  • Picking, staging, and loading material prior to delivering.

  • Works and communicates with both the inside and outside sales teams.

  • Helps keep warehouses clean, organized, and maintained.

  • All other duties assigned.

 

Responsibilities Collapse

  • Valid Driver’s license with no violations.

  • Current DOT physical or ability to pass one (A CDL is not required).

  • Ability to drive around the Chicagoland area and beyond (possibility for delivery over state lines).

  • Great customer service skills for bother internal and external individuals.

  • Knowledge of Microsoft Office and Teams.

 

Qualifications Collapse

  • Strong attention to detail.

  • Problem solving and critical thinking skills.

  • Time management and ability to prioritize.

 

Knowledge, Skills, and Abilities Collapse

Warehouse - Lead

The Warehouse Lead oversees daily warehouse operations, including organizing materials, coordinating deliveries, and maintaining accurate inventory records. This role supports cross‑department communication, keeps the warehouse clean and efficient, and ensures all tasks are completed to support smooth business operations.

Apply Here
  • Deliver or pick up orders to customer offices and jobsites.
  • Transfer product between Thermosystems locations.
  • Picking, staging, and loading material prior to delivering.
  • Works and communicates with both the inside and outside sales teams.
  • Helps keep warehouses clean, organized, and maintained.
  • Maintain accurate inventory levels, verify stock, and ensure the correct items are received and shipped.
  • Maintain accurate records and prepare reports on warehouse activities, productivity, and inventory.
  • Collaborate with other departments, such as sales, purchasing, and logistics, to ensure smooth operations.
  • Contribute ideas and assist in creating and implementing procedures to improve efficiency and productivity.
  • All other duties assigned.

 

Responsibilities Collapse

  • Previous experience in a similar role.

  • Valid Driver’s license with no violations and current DOT physical or ability to pass one (A CDL is not required).

  • Ability to drive around the Chicagoland area and beyond (possibility for delivery over state lines).

  • Great customer service skills for bother internal and external individuals.

  • Knowledge of Microsoft Office and Teams.

 

Qualifications Collapse

  • Strong attention to detail.

  • Problem solving and critical thinking skills.

  • Time management and ability to prioritize.

Knowledge, Skills, and Abilities Collapse

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