Filters & casing
Removable filters and accessible casing components.
AC Deep Cleaning
Filters are only part of the picture. Over time, deposits can also collect on the cylindrical blower wheel and other internal surfaces. A clean filter alone does not remove that buildup.
Marelto uses a dedicated AC cleaning kit, including a protective washing bag to collect wastewater. The cleaning scope depends on the model, condition and safe accessibility of your indoor unit.
The focus is on accessible internal surfaces as well as removable filters and casing.
Where necessary, safe and technically practical, the blower wheel may be removed for separate cleaning.
The surrounding interior is protected and wastewater is collected during cleaning.
Routine filter care remains useful. Internal deep cleaning addresses additional areas, with the scope agreed for the particular unit.
| Basic filter maintenance | Marelto AC Deep Cleaning |
|---|---|
| Focuses on removable filters and readily accessible surfaces. | Can also address the accessible evaporator coil, blower wheel, condensate tray and drainage parts. |
| Usually involves limited access inside the indoor unit. | May involve further access or removal of individual parts where safe and practical. |
| Does not by itself clean deposits on the blower wheel. | Uses dedicated cleaning equipment, protection and controlled rinsing for the agreed internal areas. |
Dust and deposits can build up on the recessed blower and inside the air outlet. These close-ups show that buildup alongside the clean condition a thorough deep clean aims to achieve.

The final checklist is specific to your unit. Depending on its construction, condition and access, it may include:
Removable filters and accessible casing components.
Careful cleaning of the accessible indoor coil.
Thorough cleaning, with separate removal only where necessary, safe and technically practical.
Cleaning of accessible condensate tray and drainage components.
If a component cannot be safely reached or removed, the scope is discussed before proceeding. A basic operational check after cleaning is not a full technical inspection.
A careful cleaning visit
Isolate the unit from electrical power, protect the interior and position the washing bag to collect wastewater.
Clean the agreed accessible parts, taking account of the unit’s construction and condition.
Rinse carefully with appropriate controlled water pressure and correctly reassemble the components.
Check basic operation after cleaning and discuss any observations with you.
AC Deep Cleaning
Careful cleaning of accessible internal surfaces and removable filters, with protection for the surrounding space. We agree the work to suit your AC unit.


I prepare a personalised quote for the work we agree for your air conditioners. We confirm the scope and cost before the visit.
How many indoor units need cleaning, and which models?
How much buildup is visible, and can the unit and its components be reached safely?
Which parts can be cleaned, what preparation is needed, and where is the property?
A little more clarity
It depends. The time needed varies with the model, number of units, buildup and access. Send the details when enquiring and I’ll discuss the expected time before arranging the visit.
Tell me about the unit’s location and access. We’ll agree what space needs to be cleared and any other practical preparation before the appointment.
No. Removal is considered only where necessary, safe and technically practical for the particular unit. Some construction or access conditions limit the work that can be done.
No. Marelto’s service is cleaning. Technical faults, refrigerant work, installation and electrical repairs are outside its scope.
Tell me what you need. We’ll discuss the possibilities and agree a clear next step.