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, Psychrometric Calculator, English-Metric Converter, Sound Converter, and Annual Energy Cost Estimator.

Cookware 9.9 is Windows 7, 8, and 10 compatable

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.

Note: "Compute-A-Fan v9.9" includes all Cook downloads in one download. You may also download individual items below. Login is required before accessing design tools.

Log in to download

Individual Downloads

  • Compute-A-Fan
  • Revit Tools
  • FanDrafter
  • Psychrometric
  • Apps for Smartphones
    and Tablets 

New and updated products and features in version 9.9

New and Updated Products
  • TMX - New mixed-flow inline fan designed specifically for low-pressure, clean air, indoor applications where high efficiency and low sound levels are required. The TMX achieves near QMX performance levels at a lower price point for these applications. For more information on this new product, see our Product Guide.
  • QMX Levels - The QMX and QMX-HP are now available in 'Level 1' and 'Level 2' construction. New Level 1 construction offers a lighter weight, less expensive option for lower pressure applications. Level 2 construction matches the previous QMX design. For more information on this new product, see our Product Guide.
  • QMX-XP - The QMX is now available in an extended pressure version optimized for pressures from 8" to 15" w.g. and is available in Level 2 and 3 construction.
  • SimpliDrive™ - This new control option provides demand-driven speed control for belt drive ACE/ACR/ACW and SQN fan models. SimpliDrive is pre-mounted, pre-wired, pre-programmed and compatible with Vari-Flow® controls (or other 0-10VDC controls). For more information on this new product, see our Product Guide.
  • MPA larger sizes - The MPA (Modular Plenum Array) now includes sizes 270 to 402. These larger sizes are capable of airflow over 400,000 cfm.
  • Vari-Flow EC motors have been added to the SQID, TCND, HLCD and TLCD.

New Features
  • New Revit files and revised exporting process no longer requires the Cook Revit add-in. These new .rfa files work with customized .txt files that are exported for use with the built-in "Load Family" function in Revit. TMX/QMX multiselect - When selecting QMX, TMX selection show as well (when valid).
  • Seismic Certification on SQND's with EC motors.
  • IOM manuals can now be exported for all fans in an existing Cook Job file. Select Export IOM Files from the Export menu. All fan and accessory IOM manuals related to this job will be placed in a .ZIP file in the specified location.
  • New columns now appear in the results grid indicating fan Total Efficiency, "TE", and how far away the selection point is from the fan's peak Total Efficiency, "Pts From Peak TE". These values are needed to verify compliance with ASHRAE 90.1 and 189.1.
  • Added Seismic Certification to the CPV-EC.
  • Updated competitor cross reference.
  • Plus over 235 other enhancements.
Revit models & addin

Revit models for each fan that has been saved to a Compute-A-Fan job file can be exported by selecting the "Print/Export" menu and clicking "Export Revit Schedule From Job". 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 database of schedule information (CFM, SP, RPM, Volts, Amps, etc) is also included for use with the Revit add-in described below.

FanDrafter also includes a Revit add-in that simplifies the placement and customization of the Cook models in your projects. This add-in links to the schedule information that is exported from Compute-A-Fan and automatically populates an extensive list of up to 70 parameters such as airflow, static pressure, fan RPM, horsepower, voltage, phase, etc when models are placed. The add-in even includes a customization module that allows you to match Cook parameter names to your company's standard parameters ensuring uniform equipment schedules. Once installed, detailed instructions on the operation of the add-in can be accessed by clicking the "?" icon in the upper-right corner of the add-in screen in Revit.You may also download the instructions. The add-in is compatible with Autodesk Revit MEP 2010 or later.

To install the add-in, you may check the box titled "Include Revit Add-in Setup Files" when exporting the Revit models. This option will include the installation program in the .ZIP file along with .rfa files and the schedule database. Simply extract the files from the .ZIP and double-click the file "LorenCookRevitApp2015.exe" to install the add-in.

Note: Compute-A-Fan includes Revit Add-in.
Revit Fan Drafter Instructions

Autodesk® Revit MEP® 2016

Autodesk Revit families are available for every 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. A revit add-in is included to automate the insertion of families.

Browse our online library of individual Revit files

FanDrafter 2d drawing

FanDrafter® 2D v3.0

FanDrafter 2D is a collection of CAD drawing files (templates) of every LOREN COOK COMPANY product, drawn to scale in every size. Each drawing includes multiple views drawn full scale for a particular size. FanDrafter is compatible with AutoCAD Release 2000® and later, and all other programs that can import AutoCAD R2000 DWG format files.

Download the FanDrafter 2D as part of the Compute-A-Fan package or as a stand-alone software
View the FanDrafter ReadMe file



COOK's Psychrometric Analysis software tool allows the user to electronically generate and print a custom, detailed, psychrometric chart. This program allows the user to enter state points and graph the process while calculating additional air properties.

Compute-A-Fan includes a basic Psychrometric calculator

Download Psychrometric Analysis Software to experience a more full-featured software

A printable psychrometric chart (in .pdf format) is also available for download.
It is available in pdf form


Smartphones and tablets have become the new toolboxes. Make sure you have the right tools in your toolbox.


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.

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

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 or download the pdf.

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.

  • Get it on Google Play
  • Cook QR Google Play
  • Google Play and the Google Play logo are trademarks of Google Inc.

  • Get it on the App Store
  • Cook QR Apple App Store
  • Apple and the Apple logo are trademarks of Apple Inc., registered in the U.S. and other countries. App Store is a service mark of Apple Inc.