Heat Load Estimation & AutoCAD Design

Proper sizing so you don't overspend on equipment or electricity.

Every successful HVAC system begins on the drafting board. We perform rigorous block and room-by-room heat load calculations (ASHRAE / ISHRAE compliance) considering building envelope, solar radiation, occupant density, and internal equipment loads. We deliver full 2D AutoCAD duct layouts, 3D BIM coordination, and equipment sizing schedules for VRV/VRF and central chiller plants to eliminate costly on-site clashes.

Key Deliverables

• Room-by-Room Heat Load Calculations (Carrier HAP 5.1 / Hourly Analysis Program reports)
• AutoCAD Duct Routing Plans & Static Pressure Drop Calculations
• Piping Schematics for Refrigerant (R-410A / R-32) and Chilled Water Loops
• Air Terminal Selection & Throw/Spread CFM Balancing Schedules
• Bill of Quantities (BOQ) and Detailed Material Specifications
• Electrical Load Sheets and Breaker Sizing Coordination

Technical Specifications

• Software Utilized: Carrier HAP 5.1, AutoCAD MEP, Revit MEP
• Design Standards: ASHRAE Standard 90.1, ISHRAE Guidelines, NBC 2016
• Load Accuracy: ±3% Empirical Thermodynamic Variance
• Turnaround Time: 3 – 7 Business Days per 25,000 sq.ft

Target Sectors

• Commercial Architects & MEP Consultants: Zero-clash 3D/2D layouts coordinated with electrical, plumbing, and structural framing.
• Builders & General Contractors: Accurate Bill of Quantities (BOQ) preventing over-sizing and budget escalation.
• Luxury Homeowners & Interior Designers: Aesthetic integration of concealed ducting with zero architectural intrusion.

Execution Process

1. Architectural Plan Review: Inspection of CAD drawings, wall U-values, glass shading coefficients, and orientation.
2. Thermodynamic Heat Load Run: Carrier HAP computation factoring Hyderabad peak summer conditions (44°C DB / 28°C WB).
3. Equipment Sizing & Technology Selection: Selecting optimal VRF vs Chiller vs Package unit configurations for maximum COP/ISEER.
4. AutoCAD Drafting & Clashing Resolution: Comprehensive duct and pipe drawings with elevation coordinates and diffuser throws.

Frequently Asked Questions

Why is professional heat load estimation required before purchasing HVAC units?

Rule-of-thumb estimates often oversize equipment by 30-50%, leading to high capital costs, poor humidity control (short cycling), and exorbitant electricity bills. Our HAP calculations size your tonnage with thermodynamic precision.

Do you supply AutoCAD files compatible with other MEP contractors?

Yes. We deliver native .DWG, .DXF, and layered PDF drawings ready for immediate coordination with electrical, plumbing, and structural engineering teams.