The ASHRAE Psychrometric Analysis software (Version 7 and later) is typically a paid commercial product
. While the official full version requires a license, there are limited ways to access similar tools for free: 1. Free ASHRAE Apps & Web Tools
ASHRAE provides several free mobile and web applications that cover basic psychrometric needs: ASHRAE 365
: A free app for members and the public to stay up-to-date on Society news and resources. Duct Fitting Database Lite : A free iOS app for performing pressure loss calculations. 90.1 ECB Web App
: Automates energy cost budget calculations for building compliance. SuperheatCalc
: A free mobile app that includes psychrometric and airflow calculations for HVAC field service. 2. Version 7 Overview
Version 7 (released around 2012) introduced several professional-grade features: Updated Comfort Zones
: Includes updated ASHRAE thermal comfort and data center (Class A1–A4) zones. Interactive Plotting
: Allows users to plot typical processes and perform energy calculations on-screen without pre-printing charts. Multi-lingual Support
: Supports English, Spanish, French, German, Swedish, and Italian. Report Generation Ashrae Psychrometric Analysis Cd Version 7-- Free
: Outputs detailed tabular reports with calculated properties and energy values for each point and process. 3. Alternative Free Resources
If you require psychrometric analysis without a full software license: Official PDF Downloads : ASHRAE occasionally provides free educational PDFs like Fundamentals of Psychrometrics on platforms like Free Online Calculators : Tools like the Firgelli Psychrometric Calculator offer interactive ways to solve for air-vapor properties. Interactive iOS Chart ASHRAE Psychrometric Chart App
is a dedicated tool for mobile devices that allows for graphical plotting. ASHRAE Psychrometric Analysis
ASHRAE Psychrometric Analysis Version 7 is a professional engineering tool used to model and analyze psychrometric processes with high accuracy. While Version 7 was widely popular, it has been largely superseded by Version 9.0, which includes over 40 updates and bug fixes for modern standards. Key Features of Version 7
Comprehensive Charting: Includes ASHRAE Psychrometric Charts 1–5 in I-P units and Charts 1–7 in SI units.
Process Analysis: Allows users to plot typical psychrometric processes—such as air mixing, cooling coils, and humidification—and perform automated energy calculations.
Professional Reporting: Generates detailed state point and process reports with calculated properties and energy values for each point.
Climatic Data: Integrates worldwide ASHRAE climatic data from the Handbook—Fundamentals to assist in location-specific design.
Customization: Users can modify chart line types, colors, and thickness, and import data from Excel (.csv) files. Status and "Free" Availability The ASHRAE Psychrometric Analysis software (Version 7 and
Official versions of this software are paid commercial products developed by ASHRAE or licensed through Hands Down Software. ASHRAE Psychrometric Chart App
A standout feature of ASHRAE Psychrometric Analysis CD Version 7 is its Dynamic State Point and Process Analysis. This tool allows you to plot specific air conditions (state points) and connect them to visualize real-world HVAC processes—such as air mixing, cooling, and humidification—while automatically calculating the resulting energy and mass changes. Key Functional Features
Comprehensive Charting: Includes high-accuracy replications of ASHRAE Charts 1-5 (I-P units) and Charts 1-7 (SI units).
Built-in Calculators: Features specialized tools for Cooling Coil performance, Evaporative Cooling, and Air Mixing.
Updated Comfort Standards: Includes plotting for ASHRAE 2010 Comfort Zones and specialized Datacenter Zones (Classes A1–A4).
Climate Data Integration: Accesses worldwide climatic data updated to the 2009 ASHRAE Handbook—Fundamentals, covering thousands of global locations.
Professional Reporting: Generates tabular reports detailing calculated properties like enthalpy, dew point, humidity ratio, and specific volume for every point and process. User Customization
Presentation Control: Allows full customization of line colors, thickness, and background styles.
Data Exchange: Supports importing/exporting data from Excel (.csv) and copying charts directly to the clipboard for reports. engineers performed these calculations manually
Multi-Language Support: The software can produce charts and reports in up to seven different languages with a single click. 0? AI responses may include mistakes. Learn more ASHRAE Psychrometric Analysis
ASHRAE's Psychrometric Analysis software is a professional-grade tool designed for HVAC&R engineers to plot psychrometric processes and perform high-accuracy energy calculations. While Version 7 was a highly popular release, it has been succeeded by Version 9.0, which introduces over 40 updates and bug fixes. Is it Free?
The official software from ASHRAE is a paid product. While some online sources may claim to offer "free downloads" of older versions like Version 7, these are often unofficial third-party uploads that may carry security risks.
However, there are legitimate free or low-cost alternatives: ASHRAE Psychrometric Analysis
HVAC standards evolve. While the thermodynamic properties of air remain constant, the correlations and standard reference values (e.g., in ASHRAE Handbook—Fundamentals) are periodically updated. Version 7 relies on algorithms that may be two decades old. While the deviations may be minor for residential calculations, they can be significant for precision industrial or laboratory HVAC applications.
The design of efficient HVAC systems relies heavily on the accurate calculation of thermodynamic properties of moist air. These properties—such as dry-bulb temperature, wet-bulb temperature, relative humidity, enthalpy, and dew point—are visually represented on the psychrometric chart. For decades, engineers performed these calculations manually; however, the advent of digital computation allowed for rapid iteration and precision.
ASHRAE, as the governing body for HVAC standards, has released various iterations of psychrometric software. The "ASHRAE Psychrometric Analysis" CD, particularly Version 7, represents a specific era of standalone executable software. With the shift toward cloud-based solutions and digital licensing, the demand for legacy, "free" versions of this software has persisted. This paper aims to deconstruct the reality of obtaining Version 7 for free, the technical obsolescence of the CD format, and the viable pathways for practitioners seeking cost-effective tools.
Given the legal and technical hurdles of Version 7, engineers seeking "free" psychrometric tools are better served by modern alternatives.
A: No. ASHRAE sells it via their bookstore. However, they offer a free demo version with limited functionality (water properties only, no mixing).