Mechanical Engineer III

Who We AreLennox (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 SuccessWe are seeking a Mechanical Engineer III to lead the design, development, and validation of HVAC systems and components, including evaporator coils and air handlers. This role is a senior-level individual contributor responsible for driving technical solutions, supporting product strategy, and collaborating across engineering, product management, manufacturing, and test teams to deliver high-quality, cost-effective products.Key ResponsibilitiesLead design and development of mechanical systems and components from concept through productionOwn subsystem or product-level engineering execution, including CAD models, drawings, and specificationsDrive design decisions balancing performance, cost, manufacturability, and reliabilityDefine and support system testing and validation activities in collaboration with lab teamsAnalyze test data and lead design iterations to meet performance and regulatory requirementsSupport new product introductions (NPI), product updates, and platform standardization effortsLead root cause analysis and resolution of field, warranty, and production issuesPartner with cross-functional teams (product management, manufacturing, sourcing, lab/test, and sales)Mentor junior engineers and review technical work for quality and accuracyWhat We Are Looking ForRequiredBachelor’s degree in Mechanical Engineering or related field5–8+ years of relevant engineering experienceStrong understanding of thermodynamics, heat transfer, and airflow systemsExperience with CAD tools (e.g., SolidWorks, Creo, or similar)Demonstrated ability to independently lead design and development effortsStrong analytical and problem-solving skillsPreferredHVAC system design experience (coils, air handlers, or similar equipment)Familiarity with AHRI, DOE, or other regulatory standardsExperience working in cross-functional product development environmentsKnowledge of manufacturing processes (sheet metal, assembly, heat exchangers)What We OfferCompensation: This is a salaried exempt role. The starting salary range for this role and market is between $97,000 - $127,000 annually. Factors that may affect starting salary include geography/market and the skills, education, experience, and other qualifications of the successful candidate. Employees in this role are also eligible for an annual bonus in accordance with the terms of the Company’s applicable plan. Employees in this role are not eligible for overtime.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.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, 12 paid holidays, 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.We may use automated tools, including artificial intelligence, to support parts of our hiring process, such as application review and interview scheduling. These tools assist our teams but do not replace human decision-making. If you need an accommodation or have questions, please contact View email address on click.appcast.io SummaryRequisition #: 2026-53755Category: EngineeringShift / Hours: RegularMinimum Pay: $97,000.00Maximum Pay: $127,050.00