Sign up to access all features of our service.
  • Job search
  • Favorites
  • Create a CV
    New
  • Salaries
  • Subscriptions

Mechanical Engineer IV

$115k - $140k

Lennox International Inc

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.

The Lead Engineer for Residential Air Handlers and Indoor Coils is responsible for the design, development, certification, and lifecycle management of residential HVAC air handling units and Evaporator Coil products. This role provides technical leadership across cross-functional teams, drives execution of product roadmaps, ensures regulatory and safety compliance, and delivers high-quality, cost-effective solutions that meet performance and reliability expectations.

DUTIES INCLUDE BUT ARE NOT LIMITED TO:

Product Development & Technical Leadership
  • Lead end-to-end engineering for residential air handler and indoor coil platforms, including concept development, detailed design, prototyping, testing, and product launch.
  • Own system- and component-level design decisions for sheet metal, plastics, heat exchangers, motors, blowers, insulation, controls integration, and refrigerant circuitry.
  • Interpret test results and drive optimization recommendations for coil/air handler performance, refrigerant charge, airflow, and system configuration to meet regulatory and market efficiency targets.
  • Develop, analyze, and validate system performance ratings (SEER2, EER2, HSPF2, capacity ratings, and AHRI matchups) through lab testing, data modeling, and cross-functional collaboration.
  • Lead Air Handler electric heat testing and certification activities to ensure all electric heat modules and integrated air-handler assemblies meet UL 60335-2-40 safety requirements, including thermal protection, electrical clearances, wiring, component compliance, and abnormal operation testing.
  • Drive engineering execution for new product introductions, value engineering initiatives, and sustaining engineering efforts.
  • Guide junior engineers and provide peer review for design evaluations, calculations, DFMEAs, and test plans.
Certification & Compliance
  • Ensure all products meet applicable regulatory and industry requirements, including UL/ETL, AHRI standards, DOE efficiency requirements, regional codes, and refrigerant transition regulations.
  • Lead certification testing and documentation processes, including performance mapping, safety evaluations, and reliability validations.
  • Maintain strong working relationships with certification agencies and internal compliance teams.
  • Testing, Validation & Quality.
  • Define system-level verification and validation plans, including airflow, capacity, sound, pressure drop, condensate management, and reliability testing.
  • Collaborate with test labs to interpret data, troubleshoot issues, and optimize performance.
  • Drive root-cause analysis and corrective actions for field issues, quality deviations, or manufacturing defects.
Cross-Functional Collaboration
  • Partner with program management, manufacturing engineering, supply chain, quality, and product management to deliver on schedule, cost, and performance targets.
  • Support manufacturing plants with design releases, engineering changes, tooling decisions, assembly process, PFMEA inputs, and build issues.
  • Work closely with sourcing and suppliers to optimize cost, improve component performance, and ensure long-term reliability.
Project & Documentation Management
  • Lead engineering activities in alignment with phase-gate and Independent Design Review processes, ensuring clear documentation, timely deliverables, and risk mitigation.
  • Approve drawings, specifications, CAD models, and engineering change notices.
  • Develop and maintain technical design standards, best practices, and engineering guidelines for air handlers and indoor coils.
#LI-onsite #LI-JM1

What We Are Looking For
  • Bachelor's degree in Mechanical Engineering, Aerospace Engineering, or related technical field.
  • 8+ years of experience in HVAC product development.
  • Strong understanding of air handlers, indoor coils, refrigeration principles, and airflow systems.
  • Proficiency with CAD and BOM release/updates through Change Notice management tools like WindChill.
  • Experience with UL/ETL, AHRI testing, and DOE regulatory requirements.
  • Strong analytical, problem-solving, and communication skills.
  • Demonstrated leadership in technical teams or product development programs.

What We Offer

Compensation : This is a salaried exempt role. The starting salary range for this role and market is between $115,000 - $140,000 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.
Vacancy posted 4 days ago
Similar jobs that could be interesting for youBased on the Mechanical Engineer IV in Carrollton, TX vacancy
  • $115k - $140k

     ...As a Lead Engineer, you will drive the design, layout, and testing of residential gas furnace products and components. This role involves...  .... What We Are Looking For Requires a bachelor's degree in mechanical engineering. Requires at least 8 years related experience in HVAC... 
    Suggested
    Temporary work
    Work at office
    Monday to Friday

    Lennox International Inc

    Carrollton, TX
    1 day ago
  •  ...Job Title: HVAC System Engineer Location: 3728 Arapaho Rd Addison, TX 75001 Engagement: Fulltime - Direct Hire Experience Level: 3-5...  ...highly desired. Job Qualifications Minimum bachelor’s degree in mechanical engineering and 3-5 years of relevant experience. Effective... 
    Suggested
    Full time

    Aiir-Holdings-Inc.

    Carrollton, TX
    4 days ago
  • $142k - $160k

     ...Principal Engineer This role will develop and apply advanced mechanical engineering methods, theories, and research techniques to solve complex technical challenges related to heat transfer, thermodynamics, and HVAC systems, with a strong emphasis on commercial rooftop... 
    Suggested
    Temporary work
    Work at office
    Remote work
    Monday to Friday

    Lennox

    Carrollton, TX
    5 days ago
  •  ...to make a difference and where we are extremely proud of what we deliver, together. Job Purpose The Mechanical Design Engineer, as part of the larger product solutions development team, provides mechanical design support of product development, NPI... 
    Suggested
    Worldwide
    Flexible hours

    Sanmina-SCI

    Carrollton, TX
    3 days ago
  • $97k - $127k

     ...Mechanical Engineer III We 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... 
    Suggested
    Temporary work

    Lennox International Inc

    Carrollton, TX
    4 days ago
  •  ...that the required deadlines are met Specifications & Documentation: Develop and maintain packaging specifications, BOMs, and engineering change orders in ERP systems; review and approve technical drawings and specification documents Create and revise packaging... 
    Flexible hours

    Innovations in Nutrition + Wellness

    Carrollton, TX
    1 day ago
  •  ...FIRE PROTECTION ENGINEER JOB DESCRIPTION Position Summary: Allied Fire Protection...  ...Engineering or related discipline (Mechanical, Civil, etc.); equivalent industry...  ...will be considered NICET Level I - IV certification is preferred NICET Level... 
    For contractors
    Work experience placement
    Work at office

    Allied Fire Protection

    Carrollton, TX
    4 days ago
  •  ...Position Description The Mechanical Design Engineer is responsible for the development and sustaining engineering of electronic hardware designs for power supplies and converters. Responsibilities Support the introduction of new products through mechanical design, development... 

    SynQor

    Plano, TX
    1 day ago
  • $85k - $105k

     ...Designs, adapts or directs the building of test setups and equipment to new situations, based on analysis of test specifications and engineering department requests and instructions. Prepares purchase and material requisitions. Recommends solutions to observed test... 
    Full time
    Work at office

    UL

    Plano, TX
    5 days ago
  • $54.6k - $68k

     ...training staff. The ideal candidate will have effective communication skills, a desire to collaborate in teams, and experience in engineering or a related field. This full-time position offers a salary ranging from $54,600 to $68,000, along with a 5% annual bonus target... 
    Full time

    UL, LLC

    Plano, TX
    3 days ago
  •  ...days, Medical, Dental and Vision insurance, 401K retirement savings plan, Life Insurance, Disability Insurance. Job Description Mechanical Engineer - responsible for electrical/mechanical high-level concept design, translation of requirements to design requirements,... 
    Work experience placement

    Collabera

    Plano, TX
    2 days ago
  • Job Description POSITION: Industrial Maintenance Technician DEPARTMENT: Maintenance LOCATION: Flower Mound, Texas REPORTS TO: Maintenance Manager SHIFT: Night Shift STATUS: Level 4 Long term reliability and mentor Technician GENERAL PURPOSE This...
    Temporary work
    For contractors
    Shift work
    Night shift

    MI Windows and Doors

    Flower Mound, TX
    more than 2 months ago
  • $110k - $150k

     ...Mechanical Engineer $110000 - $150000 per year | Plano, TX | Hybrid | Permanent Job Details We are seeking a Mechanical Engineer to support the design and delivery of mechanical and plumbing systems across a wide range of building types within a multidisciplinary engineering... 
    Permanent employment
    For contractors
    Local area

    Australia-Employment

    Plano, TX
    4 days ago
  •  ...As a Mechanical Engineer III, you will lead the design, development, testing, and deployment of advanced mechanical systems for aerospace and defense applications. This role requires in-depth expertise in mechanical engineering and the ability to manage multiple projects... 
    Work at office

    Sierra Nevada Company, LLC

    Plano, TX
    5 days ago
  • $80k - $100k

     ...General Information Name Mechanical Engineer Employment Type Direct Hire Position level Full-time Virtual/Remote? No Labor Category Engineering Date 09-Jun-2026... 
    Full time
    Contract work
    Temporary work
    Currently hiring
    Local area
    Remote work

    Kelly Services, Inc.

    Plano, TX
    3 days ago
  •  ...CMTA, a Legence company CMTA is one of the fastest growing engineering firms in the U.S., with nationally recognized expertise in...  ...Purpose. Lead with Impact. Grow with Us. Are you a passionate Mechanical Engineer looking to take the next big step in your career? At... 
    For contractors
    Work at office
    Local area
    Immediate start
    Flexible hours

    Legence

    Plano, TX
    2 days ago
  •  ...seeking alternative components, helping production and other engineering related activities. Utilize ‘design for manufacturing’ principles...  ...require knowledge of applications, electrical/electronics, mechanical, manufacturing, quality, and safety. Never a dull day, and... 
    Local area

    Maverick Power

    Plano, TX
    5 days ago
  • $100k - $140k

     ...Mechanical and Building Systems Engineer This position is responsible for performing and reviewing Mechanical, Electrical and Plumbing (MEP) and Fire Life Safety (FLS) system assessments as part of Partner’s Integrated Facility Solutions (IFS) Group. This position requires... 
    Work at office
    Local area

    Partner Engineering and Science

    Plano, TX
    14 hours ago
  •  ...Our client is seeking a Mechanical Engineer to join their team. The Mechanical Engineer is responsible for the design and test of all aspects of mechanical equipment and machinery. Job Title: Mechanical Engineer Location: Plano, TX Responsibilities Provide mechanical machine... 

    Manpower Group Inc.

    Plano, TX
    1 day ago
  •  ...Maintenance Engineer III -HVAC Under general supervision, maintain, repair, and install new HVAC equipment throughout the district. Maintain and provide for the safe condition and operation of all district HVAC equipment. Education/Certification High school diploma... 

    Grapevine-Colleyville ISD

    Grapevine, TX
    1 day ago
  •  ...POSITION TITLE: IV Technician STATUS: Non-Exempt Role This role is responsible for administering the application of intravenous vitamins. The IV tech will administer vitamins, minerals, and other nutrients directly to the patient’s body to optimize health and wellness... 
    Work at office
    Monday to Friday
    Shift work

    IV Nutrition

    Grapevine, TX
    3 days ago
  •  ...Medical, Dental, and Vision Benefits! High-growth organization with advancement opportunities! About the Role: As a Senior Mechanical Design Engineer with Maverick Power you will be working with our engineering and manufacturing teams to design and produce power... 

    Maverick Power

    Plano, TX
    3 days ago
  •  ...Summary Provide overall management direction on one or more mechanical projects (up to $10 million) and develop new business...  .../needed. Qualifications ~4-yr. mechanical or electrical engineering or construction science degree (or commensurate levels of technical... 
    Contract work
    For contractors
    For subcontractor
    Immediate start
    Flexible hours

    Southland Industries

    Carrollton, TX
    5 days ago
  •  ...Job Summary The Process Engineer is a key technical resource supporting process engineering, project execution, and plant operations...  ..., conveying, and ancillary equipment. ~ Apply basic mechanical proficiency to diagnose equipment issues and recommend... 

    International Flavors and Fragrances

    Carrollton, TX
    3 days ago
  •  ...range of sensor know-how and in-house technologies to create engineered solutions for its customers. We are a multi-national company headquartered...  ...IN THE DFW AREA. THIS IS NOT A REMOTE POSITION SENIOR MECHANICAL DESIGN ENGINEER OVERVIEW We are looking for an... 
    Temporary work
    Casual work
    Worldwide

    Rochester Sensors

    Coppell, TX
    4 days ago
  •  ...Overview Gray AES is looking to add a Sr. Mechanical Engineer – MEP to our offices in Atlanta, GA; Charlotte, NC; Dallas, TX; Lexington, KY. Responsibilities Bachelor's Degree in Mechanical Engineering (or related field) from an accredited college or university. Professional... 
    Work at office
    Night shift

    Gray AES

    Coppell, TX
    1 day ago
  • $100.5k - $147.4k

     ...Amazon Principal Engineering (APET) Team Member – Mechanical Engineer A dynamic, fast paced, program guiding role focused on Mechatronic Engineering for the Amazon Account, with a Mechanical Engineering background. The Amazon Principal Engineering Team (APET) is charged... 
    Local area
    Work visa

    Ultimate LLC

    Plano, TX
    5 days ago
  •  ...solve tough problems? Join our team to deliver technological solutions in a rapid and agile production environment. As a Senior Mechanical Engineer, you will be responsible for leading complex mechanical engineering projects, providing expert guidance, and ensuring the... 
    Work at office

    Sierra Nevada Company, LLC

    Plano, TX
    1 day ago
  •  ...strategically located in key regions throughout the world. Process Engineer Job Purpose: We are looking for an experienced...  ...Education and Experience : Bachelor's Degree in Mechanical, Industrial, Electrical Engineering or equivalent Minimum 2... 
    Afternoon shift

    Sanmina

    Carrollton, TX
    3 days ago
  •  ...Title: Senior Mechanical Engineer Location: Plainview, New York Visa: Any Visa Keywords: Development and characterization of processes on equipment in the R&D and manufacturing semiconductor fab/lab. Semiconductor, Process Development. Job Description... 
    Work at office

    Kasmo Global

    Coppell, TX
    3 days ago

Do you want to receive more vacancies?

Subscribe and receive similar vacancies to Mechanical Engineer IV. Be the first to apply!