How is the Outdoor Design Temperature (ODT) set?

The outdoorOutdoor designDesign temperatureTemperature (ODT) for your project will be automatically set using the 99th percentile temperature for the relevant project location from CIBSE guide A.

Using the 99th percentile temperature means the temperature will only fall below the ODT for 1% of the year. You may choose to use the 99.6th percentile in which case no additional uplift is needed for intermittent heating or exposed locations (see MIS 3005-d for details).

Using the project's location, Heatpunk will also automatically subtract 0.3°C from the ODT for every 50 m above sea level.