Energy Flow X

Engineering calculation suite for HVAC professionals covering psychrometrics, heating, cooling and air mixing.

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Energy Flow X (EFX) is an engineering calculation suite for HVAC professionals, offering first-principles tools for psychrometric analysis, cooling with condensate removal, heating and air mixing to support MEP system design and analysis. It's aimed at HVAC and MEP engineers who need precise calculations rather than generic estimators, and is free to use.

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