The overhead problem in offices
Nightly janitorial service focuses on desks, floors and restrooms, so overhead dust builds for years.
Dark smudges around vents and dusty light lenses make offices look dated.
What to clean first
Supply Register and Diffuser Cleaning
Supply register and diffuser cleaning removes the dust, lint and grime that collects on th…Return Air Grille Cleaning
Return air grille cleaning removes the heavy dust and lint that builds up on the large gri…Linear Slot Diffuser Cleaning
Linear slot diffuser cleaning removes dust and dark streaking from the long, narrow air sl…Light Fixture and Troffer Lens Cleaning
Light fixture cleaning removes dust, dead insects and film from the lenses, louvers and ho…Acoustic Ceiling Tile Cleaning
Acoustic ceiling tile cleaning removes surface dust, smudging and discoloration from drop-…Drop Ceiling Grid (T-Bar) Cleaning
Drop ceiling grid cleaning removes the dust and dark film that collect on the white metal …Exposed and Open Ceiling Cleaning
Exposed ceiling cleaning removes dust, cobwebs and grease from everything in an open ceili…High Ledge and Upper Window Sill Cleaning
High ledge cleaning removes dust from horizontal surfaces above reach: architectural ledge…Recommended schedule
| Area | Frequency |
|---|---|
| Vents and returns | Every 6 months |
| Lights, tile and grid | Every 12 months |
| Exposed ceilings | Every 12 months |
Good to know
- Work is scheduled evenings or weekends.
Other services for offices
Above eye level cleaning for offices: FAQ
Does our janitorial company already do this?
Usually not. Many AELC providers are janitorial companies that add this specialty, so you can often get it from the crew you already use.
Last updated October 4, 2026.