Q: Can we have a fan unit installed in a clean supply room? We have a room where an air handler unit is installed for cooling another equipment room. The unit is in the open and clean supplies are near it. Is this a violation of a code or standard?

A: Sounds like the room is now a mechanical room with clean supplies in it. As far as the Life Safety Code goes, and any referenced NFPA standards, I don’t see a problem. You must maintain 36-inches clearance around the equipment and have clear access to the unit. All electrical connections need to be enclosed (inside junction boxes, etc.).

If the clean supplies are combustible, then the room must be constructed to be a hazardous room. Check with your state and local AHJ to determine if they have any other requirements.