Design Tools

Revit Tools

Revit models for each fan that have been saved to a Compute-A-Fan job file can be exported by selecting the "Export" menu and clicking "Export Revit Files and Schedule". This feature will export each model of fan that is contained in the job to a .zip file in the location of your choice. A text file of schedule information (CFM, SP, RPM, Volts, Amps, etc) is also included for use with Revit. Export the contents of the .zip file to your computer, leaving the .rfa and .txt files together. Now you are ready to load the .rfa model(s) into your open Revit project, using the standard "Load Family" feature.


Autodesk® Revit MEP®

Autodesk Revit families are available for each model and configuration of LOREN COOK product. Each 3D parametric family is a full-scale representation with information on ducts, electrical connections, mounting holes and more.

Browse our online library of individual Revit files

Revit Logo


Compute-A-Fan is a fast, accurate and easy-to-use fan-selection program. This tool gives point-and-click access to COOK's entire line of fans, blowers, gravity ventilators, energy recovery ventilators, and laboratory exhaust systems. A comprehensive, cross-reference interface allows the user to select fans based upon the product specifications of any major manufacturer.

The tools menu also includes these proven timesavers: Fan Law Calculator, Duct Designer, English-Metric Converter, Sound Converter, and Annual Energy Cost Estimator.

Compute-A-Fan "Full" software includes:

  • COOK Fan selector
  • Fan Law Calculator
  • Duct Designer
  • Psychrometric Calculator
  • English-Metric Converter
  • Sound Converter
  • Annual Energy Cost Estimator
  • Plus the option to install
    • Revit Tools, used with Compute-A-Fan
    • FanDrafter 2D
    • Engineering Cookbook PDF
    • Catalog PDFs
    • Manual PDFs
  • An automatic update will provide you with the latest versions of everything.
Compute-A-Fan Banner v10

Register here to download:

Apps for Smartphones & Tablets


CookTools is a new app providing a suite of simple-yet-powerful tools for the HVAC engineer, designer and contractor.

Included in CookTools:

  • Fan Law Calculator – Calculate new system operating conditions quickly and accurately with just a few pieces of data.
  • Sound Calculator – Calculates sound power, sound pressure and Noise Criteria from input of octave band sound data.
  • Duct Designer – Quickly calculate rectangular and round duct sizes that meet your system needs
  • Area Calculator – Computes section properties of round and rectangular shapes sections.
  • Unit Conversion – Quickly calculates the most common conversions.
  • Psychrometric Calculator – Computes pressure, temperature, dew point, humidity, and more.

From the main menu you also have access to all the Loren Cook Company social media channels and the mobile website.

Engineering Cookbook

Engineering Cookbook


The Engineering Cookbook is a convenient reference guide for mechanical designers.
It provides access to frequently needed information, including:

  • Fan Basics
  • System Design
  • Duct Design
  • Motors & Drives
  • Heating & Refrigeration
  • Formulas & Conversion Factors

This free guide is available in printed form from your local COOK representative.

Android & iPhone Applications

Engineering Cookbook is available as a free app on Google Play & Apple App Store

Android app of Engineering Cookbook has been updated. Version 1.1 now has the ability to save to an SD card, if available.

Engineering Cookbook

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