Mechanical Engineering · Rooftop Units

Rooftop HVAC Unit Engineering

Rooftop HVAC unit (RTU) installations involve both mechanical engineering — for equipment sizing, duct connections, and energy compliance — and structural engineering for the roof framing capacity and equipment anchorage. Apex Grid coordinates mechanical and structural RTU engineering under one engagement, eliminating the coordination gap between disciplines.

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What This Engineering Scope Covers

RTU sizing and selection engineering
Duct connection design from RTU to building interior
Economizer and outdoor air damper design
Structural evaluation of existing roof framing
RTU curb structural design
Seismic and wind anchorage calculations
Electrical connection scope for RTU power
Controls and thermostat specification
Energy code compliance for new RTU
Coordinated mechanical and structural permit drawings

What You Get

RTU sizing calculations
PE-stamped mechanical drawings for RTU installation
Structural drawings for RTU curb and anchorage
Coordinated mechanical and structural permit package
Energy code compliance for RTU replacement or addition

How Apex Grid Handles This

Apex Grid Engineering is licensed in 49 states — every U.S. state except Alaska. Engineering stamping and licensure are confirmed for each project jurisdiction. We provide rooftop hvac unit engineering as a standalone service or coordinated with structural, MEP, civil, and geotechnical engineering under one contract.

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Frequently Asked Questions

What does rooftop HVAC Unit Engineering cover?

This scope covers RTU sizing and selection engineering, duct connection design from RTU to building interior, economizer and outdoor air damper design, and structural evaluation of existing roof framing.

What deliverables come with rooftop HVAC Unit Engineering?

Deliverables include RTU sizing calculations, PE-stamped mechanical drawings for RTU installation, structural drawings for RTU curb and anchorage, coordinated mechanical and structural permit package, and energy code compliance for RTU replacement or addition.

Can this service stand alone?

Rooftop HVAC Unit Engineering is provided as a standalone service or coordinated with structural, MEP, civil, and geotechnical engineering under one contract.

Who stamps the engineering for this scope?

Apex Grid Engineering is licensed in 49 states — every U.S. state except Alaska. Engineering stamping and licensure are confirmed for each project jurisdiction.

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Reviewed and sealed by licensed PEs. “Solid engineering and clear communication from start to finish.” — Jason Mitchell, Principal Architect

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