Excel-based, machine learning-enhanced calculator suite for HVAC and hydronic design
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5× faster workflows | 95%+ accuracy | Professionally packaged for engineers
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The HVAC Engineering Toolkit is a professional-grade suite of Excel-based calculators designed to streamline HVAC and hydronic system design. It consolidates multiple engineering workflows into a single protected workbook with a consistent user interface.
The toolkit was built to address a common problem in HVAC design: engineers and interns often spend excessive time referencing charts, interpolating data, and repeating manual calculations. By embedding proven methods and empirical data into an easy-to-use Excel environment, this tool reduces the friction of early-stage design and educational training.
Useful for:
Included modules & features:
duct, pipe, fan, pump)Churchill approximation) and a machine learning model (XGBoost regression trained on empirical data) for friction factor estimation<aside> 📊
Impact: By replacing manual lookup tables and hand-drawn Moody charts with an automated system, the toolkit enables faster iteration, fewer mistakes, and clearer documentation.
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The toolkit consolidates several critical HVAC and hydronic design calculations into a unified, protected Excel environment. Each feature is engineered to balance technical rigor with speed and usability:
Four-in-one calculator suite
Includes dedicated modules for duct (rectangular, round, flat oval), pipe, fan, and pump design (see links below). Each module is formatted consistently, with inputs highlighted in yellow, protected formulas, and clear output sections. This allows engineers to move between airflow and hydronic calculations without switching tools.
Home screen for navigation to all four calculator modules and supporting pages.