kW Engineering | Sustainable Buildings & Energy Efficiency Consulting

Psychrometric Calculations Tool

Get Psyched!

Our Get Psyched software will allow you to do psychrometric calculations in MS Excel. The software is based on ASHRAE correlations and is more than accurate enough for HVAC applications. It works with both English (IP) and Metric (SI) units. Submit the form below to download this free tool.

pschrometric calculation chart

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How to Install

Add in Functions

The Get Psyched Excel add-in, allows you to calculate the following properties in any Excel spreadsheet for psychrometric calculations and is compatible with MS Excel 2003/2007/2010.

Enthalpy (h)
Humidity Ratio (W)
Dewpoint Temperature (dp)
Specific Volume (v)
Relative Humidity (%)
Wet Bulb Temperature (wb)

Easily Plot

Quickly and easily plot points on a psychrometric chart.

The chart will correct automatically to any altitude that you select, up to 30,000 ft. or 10,000 meters.

The functions are accurate between -60°F and 120°F or between -50°C and 50°C. The software can calculate Grains as well (IP functions only).

Metric Calculations

We investigated three scenarios, analyzing the energy impacts and associated costs of each which included scenarios for:

  • current plan which meets code efficiency requirements, and partial solar PV installation,
  • zero net energy, and
  • zero net carbon.

Help & Templates

Help and psychrometric chart templates are now available from a PDF.

What's Inside?

The Get Psyched Excel add-in, allows you to calculate the following properties in any Excel spreadsheet for psychrometric calculations and is compatible with MS Excel 2003/2007/2010.

MS Excel add-in

Allows psychrometric functions available to you in any Excel spreadsheet.

Windows Help File

Searchable – but you probably won’t need it.

Examples & Auto Install

Allowing you to streamline your work efficienty and effectively.

Spreadsheet Template

With a built-in psych chart. Just add your data to make a plot.

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