What's included
- Outer housing and front panel of wall-mounted units
- Cassette face panels and adjustable louvers
- Surrounding wall or ceiling surface
Not included
- Coil, blower wheel or drain pan cleaning
- Filter service unless the facility requests a simple rinse of washable filters
- Refrigerant or electrical work
Why it matters
Indoor ductless units are mounted high on walls and ceilings where dust and kitchen film collect and staff rarely reach.
More on why it matters
A clean exterior shows the space is cared for and helps staff notice drips or staining early.
How AELC providers clean mini-split and cassette units
Every provider follows the AELC Source-Control Method: capture the dust, don't move it.
- IdentifyNote each unit type and confirm with the facility whether units should be switched off during cleaning.
- CaptureVacuum housing and louvers with a HEPA source-capture vacuum and soft brush.
- ContainDamp-wipe the housing with microfiber, keeping moisture away from openings.
- VerifyReport any drips, mold odor or louver damage to the facility for HVAC service.
How often, and how it's priced
Recommended frequency
| Offices, salons and retail | Every 6 months |
| Restaurants and gyms | Every 3 months |
Pricing is local
Your local AELC Certified Provider sets the price for your space. What affects it:
- How many mini-split and cassette units you have
- Height and access
- Dust, grease or buildup
- One-time reset or recurring schedule
DIY tips between professional visits
- Wipe the outer panel with a barely damp cloth when the unit is off.
- Follow the manufacturer's filter-cleaning schedule.
Safety: when work stops
- Never spray cleaner into the unit.
- Refer any water leaks, mold or electrical concerns to an HVAC technician.
See all red-light conditions and what AELC does not do.
Who needs it most
Ductless Mini-Split and Ceiling Cassette Exterior Cleaning: FAQ
Do you clean the coils inside a mini-split?
No. Coil and blower cleaning requires HVAC service. AELC providers clean the exterior housing, panel and louvers.
Should the unit be turned off?
Yes, units are normally switched off during exterior cleaning so louvers can be wiped safely.
Last updated October 4, 2026. Reviewed by the AELC Method team. Local services are performed by independently owned AELC Certified Providers. Above Eye Level Cleaning.