Commercial HVAC Sales Executive

ISS Mechanical • Apopka, FL

1d

About The Position

ISS Mechanical is hiring a Senior HVAC Sales Engineer to lead estimating and technical development for large-scale mechanical projects. This experienced technical sales professional conducts job walks, evaluates project feasibility, and develops detailed estimates and proposals for commercial HVAC systems in existing buildings. The role owns sales opportunities by assessing job-site conditions and client needs, building client trust, and proposing well-structured solutions.

The position works closely with sales representatives, project managers, service leaders, and field personnel to develop scopes and pricing and support a smooth project hand-off. The Senior Sales Engineer represents ISS Mechanical at site walks and client meetings and explains project scopes and mechanical options to technical and non-technical audiences. ISS Mechanical emphasizes collaboration, client service, integrity, initiative, accountability, and shared success.

Requirements

• At least 10 years of commercial HVAC experience, including extensive knowledge of estimating, offering solutions, and selling large systems across a variety of building types.
• Strong understanding of HVAC system design, controls, and performance.
• Proficiency in mechanical plan review and blueprint takeoffs.
• Experience estimating mid- to large-scale mechanical replacement projects.
• Strong verbal and written communication skills.
• Client-focused approach and ability to build rapport and influence decisions.
• Collaborative mindset, attention to detail, and follow-through.
• Familiarity with estimating software, Microsoft Excel, and mechanical design platforms such as AutoCAD and Bluebeam.

Responsibilities

• Conduct detailed mechanical walk-throughs to evaluate site conditions, identify project requirements, and determine approaches for system replacements or upgrades.
• Prepare detailed cost estimates, labor projections, and material takeoffs using construction drawings, specifications, and site observations.
• Estimate commercial HVAC systems, including chillers, hydronic and steam piping, AHUs, VAV systems, rooftop units, VRF/VRV and split systems, cooling towers, make-up air and exhaust systems, large-scale ductwork, and controls integration.
• Collaborate with sales representatives to develop technical scopes and competitive pricing, and provide input on design approaches and system applications.
• Represent ISS Mechanical during site walks and client meetings, explaining scopes and mechanical options to technical and non-technical audiences.
• Partner with project managers, service leaders, and field personnel to support smooth project hand-offs and alignment with estimating details.
• Analyze job-site conditions and client needs, build trust, and develop solutions for sales opportunities.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed