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Lennox Hardware Engineer III in Carrollton, Texas

Company Overview

Lennox International (LII) is a leading global provider of innovative climate control solutions for heating, ventilation, air conditioning, and refrigeration (HVACR) markets.

Beginning over a century ago, Lennox International has built a strong heritage of Innovation and Responsibility. Our position as an innovation leader continually inspires us to promote more efficient energy use and a healthier environment through our product operations. Our engaged and diverse workforce is committed to providing climate control solutions that provide the most value and comfort for our customers.

We are proud to have instilled a shared sense of responsibility and commitment among our approximately 10,000 employees located throughout North America, South America, Europe, Asia, and Australia.

Job Description

General duties/responsibilities of this position will include the following:

  • Develop electronic control boards utilizing embedded microprocessor with analog and digital circuitry for residential HVAC equipment.

  • Develop the specifications for new products.

  • Test the electronic controls to verify they comply with the stringent quality and reliability requirements of Lennox Industries.

  • Perform root cause analysis and implement design changes to assure product integrity.

  • Interact with suppliers to find the best components for the application while containing component costs.

Some travel required; international travel possible.


  • A Bachelor's degree in Electrical Engineer is required with at least 7 to 10 year experience in design of analog, digital, and mixed signal circuitry and embedded microprocessors using through-hole and surface mount technologies.Experienced with variable speed motor control and inverter designs.Experienced in utilizing schematic capture and PCB layout software to document your design.Experienced with circuit simulation software is a plus.Capable of performing general soldering; operation of scopes, meters and general lab equipment.Must have demonstrated the capability to multi-task and work on several projects at the same time.Need excellent collaboration and teaming skills.Have the ability to communicate technical information to internal Lennox Industries management and external suppliers.Proficiently in speaking and writing in English.Skilled in using Microsoft Office Products (Word™, Excel ™, PowerPoint ™). Experience with MSProject™ is a plus.Experience in the HVAC or appliance industries is a plus.Knowledge of serial protocols (TCP/IP, RS485, USB, CAN, Echelon, BACnet) is a plus.

Requisition # 2018-14224

Category Engineering

Shift / Hours Regular

Lennox International is an Equal Opportunity Employer and supports a diverse, inclusive work environment.

All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, transgender status, sexual orientation, national origin, genetics, disability, age, or veteran status.

Applicants with Disabilities

If you are an individual with a disability or a disabled veteran who is unable to use our online tools to search and apply for jobs, you may request a reasonable accommodation by contacting us at Recruitment@Lennoxintl.com

E-Verify Participation

For jobs located within the United States, LII participates in the Electronic Employment Verification Program known as E-Verify.

Please visit the E-Verify website for more information on this program.

Diversity & Inclusion Website