https://communities.bentley.com/products/building/performance/f/hevacomp-forum/171177/part-l-sfpI am dealing with the entry of Specific Fan Powers for the Part L compliance. Previously I have been advised when using Hevacomp I should calculate the average SFP for the fan as Hevacomp doesn&#39;t take into account the switching off of the fan usingen-USTelligent Community 12https://communities.bentley.com/thread/492423?ContentTypeID=1Tue, 20 Nov 2018 12:28:53 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:b9e0b57c-0a87-4bda-97a3-0c5b0aebca6aDuncan Brown<p>Rob - that sounds reasonable to me.<br /><br />Regards,</p><div style="clear:both;"></div>https://communities.bentley.com/thread/492389?ContentTypeID=1Tue, 20 Nov 2018 09:58:19 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:26f644b0-e1ec-4e88-aff6-3d3df4d2a586Robert Smelt<p>Thanks Duncan,&nbsp;</p> <p>Just for clarification you are confirming that we should continue to calculate the average SFP for a fan. This is based on its actual SFP average over an hour as the extract rate is l/s/m2</p> <p></p> <p>Regards</p> <p></p> <p>Rob</p><div style="clear:both;"></div>https://communities.bentley.com/thread/492388?ContentTypeID=1Tue, 20 Nov 2018 09:53:14 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:d12a3563-2c4f-41bf-a89a-010739e1b212Duncan Brown<p>Hi Rob - Bentley Hevacomp software has no involvement in the PartL calculation. We take the information you provide and pass it to the SBEM calculation engine. As SBEM takes no consideration of occupancy for SFP I would recommend continuing with this model.<br /><br />Regards,</p><div style="clear:both;"></div>