Psychrometrics—the study of the thermodynamic properties of moist air—is the foundation of HVAC system design. While modern engineers often use high-end building simulation software, many still rely on dedicated tools like the for precise point-by-point analysis and process modeling.

Offers a trial version that allows you to test professional-grade psychrometric analysis and report generation.

Many universities provide access to ASHRAE tools through their engineering libraries. Check your institution’s software portal for a legitimate licensed copy.

A web-based tool for calculating state point properties based on elevation and temperature inputs.

A popular free desktop application used by many professionals for basic process plotting.

Supports air mixing, sensible heating/cooling, and complex cooling coil curves.

Generates tabular reports of all state points and energy values for inclusion in project proposals.

Developed by in partnership with ASHRAE, Version 7 (often referred to as HDPsyChart) was designed to move beyond the limitations of paper charts. It allows engineers to plot complex HVAC processes, such as cooling, heating, humidification, and air mixing, with mathematical precision. Key Features of Version 7: