       If you downloaded the program files before 28 April 2025 from our website, or you are
       current a CoolDUCT user, please Use the files inside folder "V7.4" to updgrade 
       your CoolDUCT program to version 7.4.


       Updated Info
       ~~~~~~~~~~~~~

       CoolDUCT v7.4 is compatible with AutoCAD 2026 and AutoCAD MEP 2026 on Windows 10 & 11

       For CoolDUCT version 6 users, the upgrade fee is $200 + GST. 

       The value of the LISPSYS system variable must be set to 0.
       
              
       Instruction
       ~~~~~~~~~~~~

      ***Please do not completely delete or replace your existing "BMP" folder inside your original "CoolDUCT" folder.***
      ***Also please do not completely delete or replace your original "CoolDUCT" folder.***
      ***Otherwise you will have to reinstall CoolDUCT program and additional fees will apply for a new registration code***
       

            
       1. close all AutoCAD program. 
       
       2. copy all six files inside folder "V7.4" to your original "CoolDUCT" folder which is 
       located on local hard drive such as "C:\CoolDUCT". Replace the original files.
      
       3. restart AutoCAD with a new drawing. CoolDUCT will been upgraded. The existing menu 
       will not be changed. 


      (To run CoolDUCT on AutoCAD 2026, Add "CoolDUCT" folder location to AutoCAD 2026's Support File Search Path..)
       
                       
       Contact 
       ~~~~~~~~
         
       HVAC CAD SERVICES
       PO Box 640
       Wentworthville, NSW 2145
       Australia
       Web: www.hvaccad.com.au
       Email: info@hvaccad.com.au. 
       A.B.N. 21 681 556 286 
