How do I change the Outdoor Design Temperature (ODT) for my project?

To change the ODT, follow these steps:

Note this will not affect the Outdoor Low Temperature (ODL) used in the performance task. Read here for more information. 

  1. Navigate to the Plan task and the Sources tab 
  2. Below the sound heat pump load and sound check, click Outside design temperature
  3. Set the temperature you want to use

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An additional 0.3°C will need to be removed for every 50 m above sea level, with altitude given in the input section of the technical report & customer proposal. 


Revision #9
Created 17 March 2025 10:38:01 by Matt Agnes
Updated 1 June 2026 09:34:56 by Daisy