HVAC Sales Engineer & Design Specialist

Port Washington, NY onsite role for Rebmann Plumbing Heating & Air Conditioning focusing on designing high-performance HVAC systems and providing application support to installation teams. This consultative technical sales position works with customers to close premium-value projects while ensuring design accuracy and installation feasibility. The role carries a salary range of USD 125,000 to 300,000 per year and involves collaboration with clients, installers, and management across Long Island and the NYC metro area.

Responsibilities

• Perform accurate load calculations and complete HVAC system designs for residential and commercial projects
• Select and size equipment including heat pumps, gas furnaces, ductless/mini-split systems, zoning, and hydronic/steam boilers
• Work directly with customers to present system recommendations, answer technical questions, and close high-value projects
• Collaborate with installation teams to ensure design accuracy and reduce field adjustments, callbacks, and redesigns
• Develop and maintain engineering documentation and design standards
• Drive revenue growth through accurate designs, premium system recommendations, and high customer satisfaction
• Represent Rebmann at customer appointments, trade events, and site visits across Long Island and NYC metro

Requirements

• Proven HVAC system design experience: load calculations, equipment sizing and selection, ductwork application
• Proficiency with ductless/mini-split systems, heat pumps, zoning systems, and gas furnace applications
• Experience with hydronic or steam boiler design (strongly preferred)
• Demonstrated consultative sales skills, with the ability to present technical solutions and close premium-value projects
• Strong communication skills across customers, installers, and management
• Self-motivated with the ability to manage a project pipeline and meet performance targets
• Valid driver’s license and reliable transportation (field-based role)

Benefits

• Health insurance
• 401(k) with employer matching
• Stable, year-round full-time employment
• Professional development and training
• Company with 80+ year reputation on Long Island

Preferred / Parallel Experience

• Manufacturer or distributor rep experience (Trane, Carrier, Lennox, Mitsubishi, Daikin, Bosch, or comparable)
• Building automation systems (BAS/BMS) sales or design background
• Mechanical contracting project management or estimating
• Commercial plumbing, hydronic, or radiant heating design
• NYC metro area or Long Island market familiarity

Application Question

• Do you live in Long Island?

Work Location

In person