Heating & Cooling Load
Build a project and develop detailed heating and cooling load calculations for your building.
Open load designDesign tools
Choose a tool to begin your project.
Duct Design
Lay out supply and return ductwork, size segments, and evaluate system pressure losses.
Open duct designGRD Design
Select and lay out grilles, registers, and diffusers for effective room air distribution.
Open GRD designPsychrometric Chart
Plot air states and processes, calculate psychrometric properties, and evaluate coils and mixed air.
Open psychrometric chartGlycol Property Calculator
Calculate fluid properties for glycol solutions used in hydronic heating and cooling systems.
Open glycol calculatorFan Law Calculator
Estimate changes in airflow, pressure, power, and speed using the fan affinity laws.
Open fan law calculatorMore tools on the way
Additional engineering resources are currently in development.
Future Tools
More practical calculators for everyday HVAC workflows.
Coming soonBuilding Energy Analysis
Model whole-building energy use and evaluate design and efficiency alternatives.
Coming soon