Demo

Senior Mechanical Engineer

Lennox International
Carrollton, TX Other
POSTED ON 4/26/2026
AVAILABLE BEFORE 4/24/2027

Who We Are

Lennox (NYSE: LII) Driven by 130 years of legacy, HVAC and refrigeration success, Lennox provides our residential and commercial customers with industry-leading climate-control solutions. At Lennox, we win as a team, aiming for excellence and delivering innovative, sustainable products and services. Our culture guides us and creates a workplace where all employees feel heard and welcomed. Lennox is a global community that values each team member’s contributions and offers a supportive environment for career development. Come, stay, and grow with us.

What Drives Success

Innovate your career.

 

When you choose Lennox, you're getting the best.

 

When you work at Lennox, you’re among the best.

 

As a leading innovator of home and commercial, heating, cooling, refrigeration, air-quality, and related services, Lennox International is committed to helping our people innovate our products and their careers.

This Senior Mechanical Engineer will join our Commercial Platform engineering team and be responsible for engineering processes, systems and procedures utilized for the design, development, and manufacture of heating, ventilation, and air conditioning (HVAC).

 

DUTIES INCLUDE BUT ARE NOT LIMITED TO:

 

  • Product design, engineering, and testing using thermodynamics and heat transfer theories, and relevant tools and software simulation.
  • Perform engineering documentation including bills of materials, cost analysis and Add/Delete.
  • Develop and implement cost reduction opportunities in commercial products.
  • Work on applications for the agency approvals and develop technical data for sales.
  • Research new, unproven engineering technologies for HVAC systems.
  • Conduct design and sizing of system assemblies, sub-assemblies, and components.
  • Apply mechanical design and thermal system design techniques, tools, and principals involved in production of precision technical drawings, engineering models and performance simulation.
  • Work with Thermal/Fluid System, Electrical System, Control System and Electrical-Mechanical Components.
  • Conduct investigations and evaluation tests of certain complexity pertaining to the development of new air conditioning designs and methods.
  • Formulate test approaches, plan and test procedures, evaluate test results, and provide recommendations.
  • Compile test data and prepare technical specifications.
  • Assist higher level engineers with making product development plans and project schedules.
  • Coordinate with technical support personnel to build design prototypes in the model shop.
  • Coordinate with sourcing, suppliers, supply chain, and manufacturing to prepare project related material and paperwork for prototyping, pilots, PPAP and production release processes.
  • Involved in product qualification plans, product and project risk assessment process, Failure Mode and Effect Analysis (FMEA), Process Failure Mode and Effect Analysis (PFMEA), and Design Verification Plan and Report (DVP&R).
  • Participate in Mechanical Product Qualification Test Process including writing test procedures, compiling, and evaluating design, testing data and preparing technical specifications.
  • Coordinate with controls team, adjust and optimize control systems and algorithms for new products.
  • Lead the documentation management process, literature, prints update and engineering change request, and engineering change notice process.

#LI-onsite #LI-JM1

What We Are Looking For

  • Bachelor’s degree in Mechanical Engineering, Thermal Science, or a related field.
  • 6 years of progressive experience in engineering processes, systems and procedures utilized for the design and manufacture of HVAC equipment, and working with mechanical design techniques, tools, and principals involved in production of drawings, and engineering models.
    • Experience therein to include:
      • 2 years of experience in HVAC product design and manufacturing.
      • 2 years of experience in Mechanical Product Qualification Test Process including writing test procedures, compiling, and evaluating design, testing data, and preparing technical specifications.
      • 1 year of experience with CAD software.
      • 1 year of experience working with electrical system, control system, and electrical-mechanical components.
      • 1 year of experience with HVAC&R system modeling and simulation.

What We Offer

Compensation: This is a salaried exempt role. The starting salary range for this role and market is between $97,000 - $115,000 annually. Factors that may affect starting salary include geography/market and the skills, education, experience, and other qualifications of the successful candidate. This position is also eligible for the BroadBase Incentive (BBI) program with a target payout of 2%. Employees in this role are not eligible for overtime.

 

Location and Schedule: This position is located in Carrollton, TX and will be in the office Monday through Friday. 

 

Benefits: Subject to applicable eligibility requirements, the following benefits are offered for this role: tuition reimbursement; medical, dental, and vision insurance; prescription drug coverage; 401(k) retirement plan; short-term disability insurance; 8 weeks paid birthing leave; 2 weeks paid bonding leave; life and long-term disability insurance.

 

Paid Time Off: Depending on date of hire, and subject to applicable eligibility requirements, new employees in this role also receive up to: 12 days paid time off, 2 paid well-being days, 1 paid volunteer day, 9 to 11 paid company holidays depending on the year, and 3 floating holidays per year. 

 

Our Culture: At Lennox, our Core Values of Integrity, Respect & Excellence are ingrained in the fabric of the organization. They define our culture – which is about how we do business and how we treat others. Lennox is not just a workplace; we are a global community that values each team member’s contributions. As an equal opportunity employer, we are committed to recruit, develop, and retain talented individuals from a wide range of backgrounds, ensuring that everyone has the opportunity to succeed and contribute to our continued growth and success. At Lennox, you’ll take pride in our brands, knowing you are part of something special. Come, stay, and grow with us! 

 

Disclaimers: The compensation and benefits information is accurate as of the date of this posting. Lennox reserves the right to modify this information at any time, with or without notice, subject to applicable law.

Salary : $97,000 - $115,000

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