mistersq -
If all the air handlers will be serviced in the same cycle you could create one multi asset work request listing the air handlers to be serviced. This will create one work request with each equipment asset listed, it will have a check box next each to record.
If you will be setting the service cycle to have a different unit serviced on different days or weeks - then going with separate work request would be the best way.
Stephen Komisarek
FM Solutions Consultant
Building Solutions Division
www.autodesk.com
www.fmdesktop.com