ENGINEERING TOOLS
Calculators
Practical tools for understanding energy and building systems. Choose a calculator to explore the numbers, check assumptions, and see how the equations work.
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Steam Systems & Heat Recovery
Boiler Blowdown Heat Recovery Sizer
Balance boiler TDS, recover flash steam and residual heat, size the exchanger, and explore fuel savings and 10-year project returns.
- SI & Imperial
- Thermal sizing
- PDF report
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Electrical Systems & Power Quality
Power Factor Correction & Demand Optimizer
Size reactive compensation, explore harmonic filtering, recover transformer capacity, and estimate demand-charge and feeder-loss savings.
- kVAR sizing
- Tariff comparison
- PDF report
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Pumps, Fans & Energy Efficiency
Pump & Fan Affinity Laws Calculator
Model changes in speed and impeller diameter, explore system operating points, and estimate annual VFD energy savings.
- Interactive curves
- Custom exponents
- PDF report
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HVAC & Air Properties
Psychrometric Calculator
Explore the properties of moist air. Calculate humidity, wet-bulb temperature, dew point, and enthalpy with an interactive psychrometric chart.
- SI & Imperial
- Altitude correction
- Interactive chart