Sr. DX Systems Specialist

PURPOSE OF THE ROLE

The Senior DX Systems Specialist - Aftermarket is the go‑to DX systems specialist responsible for DX (Direct Expansion) system performance, troubleshooting, startups, and refrigerant retrofit solutions within the service and aftermarket organization. This role provides advanced, hands-on DX expertise while serving as a key technical partner to customers, Sales, Engineering, and internal service teams. The position balances field execution, customer-facing technical leadership, and solution development, with a strong focus on strengthening documentation, standards, and guidelines for DX systems across the organization. The ideal candidate is a DX expert with strong practical experience, structured problem‑solving skills, and the ability to translate complex technical challenges into clear, executable solutions.

KEY RESPONSIBILITIES DX

Technical Leadership & Subject Matter Expertise Provide expert guidance on DX system operation, performance, refrigerants, compressors, and controls interaction Support complex customer technical clarifications related to system behavior, performance expectations, and application suitability Field Troubleshooting, Startups & Critical Interventions Lead advanced DX diagnostics and root cause analysis for complex or escalated service cases Execute and support DX startups, commissioning, and performance verification activities Conduct on-site evaluations for system instability, refrigerant-related issues, controls integration, and operational anomalies Support and oversee complex service interventions as required Refrigerant Retrofit & Solution Development Act as the technical lead for refrigerant retrofit projects, from initial assessment through execution Assess feasibility, risks, system impacts, and execution strategies for retrofit opportunities Collaborate with Engineering, Project, and Sales teams to develop technically sound retrofit solutions Support customer-facing technical discussions to align on scope, approach, and execution strategy Sales & Cross-Functional Collaboration Partner with Sales and Aftermarket teams to develop service, retrofit, and upgrade solutions Participate in customer technical discussions as a trusted DX expert Coordinate with Engineering, Factory, Controls, Warranty, and Quality teams to resolve systemic or recurring DX issues Documentation, Standards & Continuous Improvement Develop and maintain DX service documentation, troubleshooting guides, startup procedures, and retrofit guidelines Capture field learnings and convert them into standardized best practices Contribute to continuous improvement initiatives focused on reliability, service quality, and customer satisfaction Technical Coaching & Knowledge Enablement Provide technical coaching and mentorship to service technicians and internal teams Support targeted technical training initiatives related to DX systems, refrigerants, and controls Act as a technical reference point during escalations and complex diagnostics

REQUIRED QUALIFICATIONS

Bachelor's degree or equivalent technical experience in

HVAC / DX

systems Strong hands-on experience with DX systems in field service, troubleshooting, and startups Solid knowledge of refrigerants, compressors, system controls, and DX applications Proven ability to communicate technical concepts clearly to customers and internal stakeholders

PREFERRED QUALIFICATIONS & EXPERIENCE

Experience supporting or leading refrigerant retrofit projects Demonstrated collaboration with Sales and project teams on solution development and execution Experience developing or improving technical documentation and service standards Exposure to project coordination or structured execution within service scopes Nortek Air Solutions builds efficient, dependable and long-lasting heating and cooling systems that create ideal environments for working, living and learning. As the largest manufacturer of custom air handlers in North America, our engineers, designers and representatives work together with our customers to make solutions that keep commercial, healthcare, educational and industrial spaces running all over North America. Our company's legacy of innovation began in the early 1900s, when our founders made it their mission to bring better heating and cooling solutions to building occupants who needed them most. Today, we are continuing that tradition by using the latest technologies and what we have learned since 1935, in the unification of our companies, brands and people, to help create a better tomorrow, every day.