Look at the desk area
Radiant heaters heat people and objects in their line of sight. Think about the occupied part of the room when discussing placement with the manufacturer. Source: doe
Check the connection
Plug a portable electric heater directly into a wall outlet rather than a power strip or extension cord. Source: cpsc
Make a practical shortlist
Ask about placement around furniture and cables, the controls and the permitted use in your workspace. Check workplace rules before bringing in a personal heater. Source: editorial