HVAC Capacity Calculator for commercial and industrial projects

FANEX HVAC CALCULATOR — 2026 ENGINEERING ESTIMATION SUITE

HVAC Capacity & Tonnage Calculator

An interactive engineering calculator designed for real estate developers, MEP consultants, and facility owners across Saudi Arabia. Instantly estimate cooling tonnage, airflow, and optimal system types aligned with Saudi Building Code SBC 501 and ASHRAE guidelines.

01HVAC & Ventilation

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02Cold Storage & Freezers

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03Racking & Storage

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Real-Time Thermal Estimation Engine 2026

Approximate HVAC Cooling Capacity Calculator

Select your facility type and enter total floor area in square meters to calculate instant approximate tonnage requirement, heat capacity, and recommended air flow.

1 Select Facility Type or Occupancy:

Factories & Warehouses

Continuous Industrial Duty

Mosques & Event Halls

High Occupancy & 100% Fresh Air

Malls & Commercial Centers

Showrooms & Open Retail

Restaurants & Cafes

Kitchen Heat & Make-up Air

Offices & Corporate

Independent Multi-Zone Control

Hospitals & Clinics

Hygienic Sterile HEPA Standards

2 Enter Total Floor Area:

Square Meters (m²)

Quick Presets:

3 Ceiling Height:

Instant Output

Approximate Cooling Requirement:

46 - 54 Cooling Tons (TR)
Refrigeration Tons (Estimated Range)

Heat Capacity (BTU/h)

552,000 - 648,000 BTU/h

Airflow Rate (CFM)

18,400 - 21,600 CFM

Cooling kW Equivalent

162 - 190 kW

Recommended HVAC System

Rooftop Package Units or Industrial Chillers with SMACNA Galvanized Ducts.

Suggested Setup: 2 units of ~25 Tons for load balancing and redundancy.

Engineering Disclaimer: This result represents the initial «Approximate Requirement» (Rule of Thumb). Final approved executive design requires full hydraulic thermal simulation (HAP) accounting for insulation, glass facades, and internal heat loads per Saudi Building Code SBC 501.

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Next Step for Your Facility

Request a Certified Heat Load Study & Formal RFP.

Submit your project details and our certified HVAC engineering team will inspect your architectural drawings to provide a comprehensive heat load study and competitive quotation for top brands (Trane, York, Carrier, LG, SKM).

+966 50 2403 080 ↗ sales@fanex.sa ↗

Request a Quotation

Expert MEP Consultation

Have Architectural Drawings Ready?

Send your AutoCAD or PDF layouts for detailed duct sizing, BOQ generation, and SMACNA fabrication schedules.

Contact Engineering Department ↗