2021 — Refprop 10 Free Download

If you’ve landed on this page searching for “REFPROP 10 free download 2021,” you’re likely a chemical engineer, thermodynamics researcher, or HVAC professional. REFPROP is the gold standard for calculating fluid properties, but confusion about its availability often leads users to seek unauthorized free copies.

This article explains why you can’t legally download REFPROP 10 for free in 2021—or any other year—and provides safe, affordable alternatives.

Why was there such a high demand for REFPROP 10 in 2021? The update introduced several critical improvements: refprop 10 free download 2021

Even without a “free REFPROP 10 download 2021,” you have legal low-cost or zero-cost options:

CoolProp is a free, open-source library that implements many EOS from REFPROP (including IF-97 for water and Span-Wagner for CO2). It’s compatible with Python, MATLAB, C++, and Excel. Version 6.4.1 (2021) matches REFPROP 10 accuracy for common refrigerants. If you’ve landed on this page searching for

If the free alternatives don’t suffice, here’s how to purchase REFPROP 10 without breaking the bank:

Purchasing gives you the official installer, a unique license key, unlimited tech support, and access to the NIST REFPROP user forum. Python (ctypes or CoolProp-REFPROP bridge):

REFPROP (NIST Standard Reference Database 23) offers thermophysical properties of pure fluids and mixtures. Version 10 (released in 2018 and updated through 2021) supports over 147 pure fluids and includes:

Version 10’s key improvements in 2020–2021 focused on new refrigerants (R-514A, R-1336mzz(Z)) and enhanced convergence algorithms.