Providing users in the field includes portable access to industry-specific programs, instructions and data. Field data synchronization and/or delivery is enabled using wireless capabilities resident in handheld personal computing devices. Data can be synchronized with a server over a network using wireless radio transmission, or directly to a computer workstation using wireless infrared or radio transmission or connected physical connection. Two-way communications is provided between remote computers and handheld data management devices to facilitate real-time access to remote programs, assistance and/or information related to the field assessment being undertaken by using a handheld data management device user. Field data management includes activities for at least one of: construction industry project analysis, HVAC system analysis, project management, equipment readiness inspection, troubleshooting, inventory tracking, inventory ordering, sales (e.g., providing cost estimates to customers), customer invoicing, conducting legal investigations, field data collection, and multi-user remote function coordination.