
PREVENTIVE MAINTENANCE
AC Filter and Coil Cleaning in Kathmandu
Dusty filters and coils restrict airflow, reduce heat transfer, increase operating strain, and can contribute to ice or water leakage. Aircon provides careful cleaning as part of one-time service and AMC visits.
Book AC Cleaning ServiceCleaning is not just cosmetic. We inspect airflow, coil condition, drain paths, fan assemblies, and operating performance so the service addresses the cause of poor cooling.
What gets cleaned and inspected
The scope depends on the system and condition. A split AC visit may include filters, indoor coil, blower, louvers, drain pan and drain line. Outdoor service may include the condenser coil, fan area, electrical connections, and safe clearance around the unit.
- Washable indoor filters
- Evaporator coil and blower assembly
- Drain pan and condensate path
- Outdoor condenser coil and fan area
- Operating temperature and airflow checks

Signs your AC needs cleaning
Poor airflow, dusty smell, uneven cooling, longer run time, water leakage, visible dirt, and repeated icing can indicate restricted airflow or blocked drainage. Cleaning may solve the issue, but persistent faults require technical diagnosis.
- Weak airflow from the indoor unit
- Dust or odour when the fan starts
- Room takes longer to cool
- Ice or water appears around the indoor unit
- Outdoor coil is visibly blocked with dust

Service coverage
Our engineering team supports AC systems across Kathmandu, Lalitpur, Bhaktapur and the wider Kathmandu Valley.
Frequently asked questions
How often should a split AC be cleaned?
The right interval depends on dust, usage, indoor air quality, pets, occupancy, and the environment. Filters need more frequent attention than deep coil cleaning; an inspection helps set the schedule.
Will AC cleaning fix low cooling?
It can restore airflow and heat transfer when dirt is the cause. Low cooling can also come from refrigerant, compressor, fan, sensor, sizing, or control problems, so persistent symptoms need diagnosis.
Does AC cleaning prevent water leakage?
Keeping filters, coils, drain pans, and drain lines clean helps reduce leakage risk, but a damaged pan, incorrect slope, failed pump, or installation issue still requires repair.
Need help with your AC system?
Speak with Aircon Engineering Solutions about repair, maintenance or a site assessment.