Engineering Equation Solver (EES)
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Plans
| Plan | Billed and limits | Price |
|---|---|---|
| EES Commercial Single-User | One year of Instant Update and Technical Service included | On request |
| EES Professional Single-User | One year of Instant Update and Technical Service included | On request |
| EES Professional (single-user) | Includes one year of Instant Update and Technical Service · Single-user · up to 12,000 equations; 64-bit Professional up to 24,000 | $1,200, paid once |
| Student EES License | One year duration · Up to 3,000 simultaneous equations · print, copy and save · technical support | $160 a year |
| EES Commercial (single-user) | Includes one year of Instant Update and Technical Service · Single-user · up to 6,000 simultaneous equations | $600, paid once |
As fchart.com lists them, read 24 Sept 2026. The maker's own page has the final word.
Facts from Engineering Equation Solver (EES)'s own pages
- Delivery and security
- The maker states purchases are available through a secure webstore and software is downloaded with a license file and unique password sent by email. · fchart.com, 13 Nov 2026
- Demo limitations
- The demo is limited to 50 equations, has reduced property data, disables printing, copying and saving, and expires after 30 days. · fchart.com, 13 Nov 2026
- Equation capacity
- Commercial supports up to 6,000 simultaneous equations; Professional supports 12,000 and 64-bit Professional supports 24,000. · fchart.com, 13 Nov 2026
- Headquarters
- Madison, Wisconsin, United States · fchart.com, 4 Oct 2026
- Licensing restriction
- Named-user licenses are not perpetual; without IUTS renewal they terminate after five years, and floating licenses are not offered. · fchart.com, 13 Nov 2026
- Maker background
- F-Chart Software says it has produced thermal energy analysis software since 1975 and lists its address in Madison, Wisconsin. · fchart.com, 13 Nov 2026
- Operating systems
- EES was developed for Windows; the FAQ says it can run on Mac using Windows virtualization/Boot Camp and on Linux using Wine. · fchart.com, 13 Nov 2026
- Optimization and analysis
- EES offers curve-fitting, linear regression, property and contour plots, uncertainty analyses, and complex and differential equation solutions. · fchart.com, 13 Nov 2026
- Professional capabilities
- Professional includes a Python interface and supports communication with MATLAB and Excel through COM and DDE. · fchart.com, 13 Nov 2026
- Purpose
- EES solves coupled nonlinear algebraic and differential equations and also supports integration, optimization, uncertainty analysis, regression, unit conversion, and plots. · fchart.com, 13 Nov 2026
- REFPROP integration
- EES can read NIST REFPROP fluid files; an optional EES_REFPROP interface connects its property database with EES features. · fchart.com, 13 Nov 2026
- Support and training
- Training resources include online help, YouTube tutorials, the Mastering EES ebook, and potentially an on-site one-day course. · fchart.com, 13 Nov 2026
- Thermophysical properties
- It includes high-accuracy thermodynamic and transport property data for hundreds of substances. · fchart.com, 13 Nov 2026
Where Engineering Equation Solver (EES) stands on Freedom251
- Calculators#19 of 21