In the context of HVAC design, a "working file" is the active data set for a specific building project.
: Because .zip files can be used to mask malware, only download HAP files from trusted colleagues or official sources. You can scan suspicious files using tools like VirusTotal. Download HAP Working File zip
: When you "Download" this file (often sent via email or cloud storage), it is usually in a compressed format (like .zip or HAP's proprietary archive format) to keep all project components together. In the context of HVAC design, a "working
