Ventilation calculations in Heatpunk

When selecting which ventilation calculation to use, you will have the option between the Standard method, Measured air permeability (both based on BS EN 12831-1:2017) and the Legacy method based on (BS EN 12831:2003). 

 

Standard method 

Measured air permeability

Legacy method

MCS certification in accordance with MIS 3005-D now requires heat loss calculations comply with BS EN 12831-1:2017. Please only select this method when viewing old projects. 

This method is based on BS EN 12831:2003. This is a much simpler calculation