Retrotec Multi-Fan Blower Door - Manual (Page 6)

Page 6 of 37
©Retrotec Inc. 2015
comply, it is generally safer to calculate conservatively (assuming a higher permeability or leakage) to
ensure you have enough fans to run your test.
1.3 Use Retrotec’s ‘Number of Fan Calculator’ spreadsheet
Retrotec’s ‘Number of Fan Calculator’ is an Excel spreadsheet that performs the calculations described
above, for Retrotec fans. Instructions on how to use the spreadsheet are embedded within it. To obtain
a copy of this spreadsheet, please contact
[email protected] .
Figure 2: Number of fans calculator based on allowable air leakage