The Difference Between Basic Cleaning and True Chemical Servicing
Many homeowners are accustomed to simply pulling out the mesh screens above their AC unit and rinsing them under a kitchen tap. While this is helpful for coarse dust, it addresses less than 15% of the total internal surface area where dirt and microbes thrive.
Over 12 to 18 months of domestic operation:
- Microscopic Fin Blockage: The aluminum fins on a split unit evaporator are packed tightly at 14 to 18 fins per inch. Cooking vapors and skin flakes bypass coarse mesh screens, adhering to the damp metal surface and forming an insulating felt layer.
- Rotary Fan Mold Crust: The cylindrical cross-flow fan rotates at 1,100 RPM inside a confined tunnel. The rear concave edge of every single blade collects a stubborn crust of fungal mold and compacted dust, creating uneven air delivery and rumbling noise.
- Stagnant Condensate Slime: Condensation drains into an internal collection pan. Without biocidal cleansing, bacterial colonies form a gelatinous zoogloeal mass that obstructs the narrow 16mm drain hose, leading to ceiling water damage.
Our Detailed Chemical Servicing Protocol
We utilize professional HVAC catchment bags, high-foaming alkaline detergents, and low-pressure rinsers to thoroughly clean your unit right on the wall without splashing furniture or flooring:
- Protective Enclosure Setup: We install a tailored waterproof service bib around the indoor head, channeling all wastewater into an isolated collection bucket.
- Coil Chemical Penetration: We spray an industrial-grade, coil-safe foaming agent. The foam expands through the coil depth, breaking chemical bonds between greasy film, limestone dust, and aluminum fins.
- Rotary Blower Wheel Agitation: Specialized multi-angle detailing brushes clean each blade of the internal impeller wheel, dislodging stubborn mold crusts.
- Controlled Low-Pressure Rinse: Clean water rinses the chemical foam and dissolved sludge away, leaving the aluminum fins shining and completely open to airflow.
- Drainage Trough Vacuum & Flush: We vacuum the drain port and flush the entire line with antibacterial solution.
- Air Quality Sanitization: An aerosolized hospital-grade antimicrobial mist is applied to inhibit bacterial and mold regrowth for up to 6 months.
Performance Metric Comparison: Before vs. After Chemical Servicing
| Metric | Before Chemical Service | After Chemical Service | Observed Benefit |
|---|---|---|---|
| Discharge Air Velocity | 2.2 m/s | 5.1 m/s | +130% increase in airflow; room cools twice as fast |
| Evaporator Delta-T | 5.2°C drop | 11.4°C drop | Deep, crisp cooling air replaces lukewarm breeze |
| Acoustic Noise Level | 46 dBA (vibrating rumble) | 28 dBA (whisper quiet) | Smooth laminar airflow without aerodynamic flutter |
| Current Draw (12k BTU) | 6.1 Amps | 3.9 Amps | 36% reduction in electrical power consumption |
| Airborne Mold Spores | Elevated / Detectable | Undetectable / Sanitized | Clean, healthy air for children and allergy sufferers |
Transparent Chemical Servicing Rates
| Service Option | Description | Price (EUR) |
|---|---|---|
| Deep Chemical Split Wash | Full waterproof catchment wash, coil foam, blower scrub, drain flush | €65.00 |
| Standard Maintenance Service | Filter wash, surface foam clean, drain flush, electrical check | €45.00 |
| Multi-Split Chemical Package (2 Units) | Deep chemical service for two split indoor units | €110.00 (€55/unit) |
| Complete Home Overhaul (3–4 Units) | Chemical servicing across all indoor units + outdoor condenser flush | €50.00 / unit |
Frequently Asked Questions About Aircon Servicing
A chemical wash involves applying specialized foaming chemical cleansers directly onto the internal evaporator coils, cross-flow blower fan, and condensate tray. This dissolves hardened grease, calcium dust, and mold colonies that cannot be removed by plain water or surface dusting.
Not at all. Our technicians fit a specialized waterproof collection hood around the unit that seals against the wall and drains directly into a bucket. Your walls, flooring, and surrounding furniture are completely protected.
For typical domestic use, a full chemical servicing is recommended once every 12 to 24 months, depending on usage intensity, proximity to busy roads, and whether pets reside in the home.
Yes. The foul odor from an AC is caused by bacterial slime and mold feeding on trapped dust on the damp evaporator coil. A chemical wash eradicates this organic growth at the microscopic level, eliminating odors completely.
Only if uncertified operators use harsh industrial acids. We exclusively use HVAC-certified, pH-balanced, non-corrosive foaming detergents formulated specifically for aluminum and copper heat exchangers.
Service Coverage Throughout Malta
We provide fast mobile dispatch to Valletta, Sliema, St Julian's, Birkirkara, Mosta, Qormi, Naxxar, San Gwann, Mellieha, Bugibba, Marsaskala, and Gozo Island.
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Need quick troubleshooting or an honest upfront quote? Our team is on call across Malta.