Commercial HVAC Sales Executive

ISS Mechanical • Apopka, FL

12d

About The Position

ISS Mechanical is hiring a Senior HVAC Sales Engineer to lead estimating and technical development for large-scale commercial mechanical projects. The role focuses on existing buildings and involves conducting job walks, evaluating project feasibility and site conditions, understanding client needs, and developing detailed estimates and proposals for system replacements or upgrades. The Senior Sales Engineer owns sales opportunities, builds client trust, and recommends well-structured mechanical solutions. The role works closely with sales representatives, project managers, service leaders, and field personnel to support project development and ensure a smooth hand-off. Candidates should be experienced technical sales professionals who are comfortable in a fast-paced, collaborative environment.

ISS Mechanical describes a values-led workplace where employees support one another, prioritize exceptional client experiences, show initiative, act with integrity, take responsibility, and contribute to shared success.

Requirements

• At least 10 years of commercial HVAC experience, including extensive experience with 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 assess site conditions, identify project requirements, evaluate feasibility, and determine approaches for HVAC 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, custom 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 for sales opportunities.
• Provide expert input on design approaches and system applications.
• Represent ISS Mechanical during site walks and client meetings, and explain project 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.

What This Job Offers

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