A home inspection is a visual process where all of the items typically used within a home are tested and/or operated to verify proper operation or installation.
Doors and windows are checked, roofing materials inspected, and air-conditioning and heating systems operated (if weather permits).
The inspector will fill the sink(s) and tub(s), run the shower(s), and flush the toilet(s).
Throughout the whole process, notes will be taken on the condition and operation of the components tested. Upon completion, a report will be distributed to you.