The next step is cleaning the coil, the part with thousands of thin fins through which the refrigerant gas circulates. We apply a specific descaling product for air conditioning and let it sit for 15-20 minutes, depending on the level of dirt. We rinse with moderately pressured water, protecting the rest of the unit with plastic to prevent water from entering where it shouldn't. The correct technique requires experience: too much pressure bends the fins and reduces efficiency, too little doesn't remove the dirt. The condensate tray and drain are cleaned separately with a descaling product as they tend to accumulate limescale. If the drain is partially blocked, we clear it with a flexible hose. Finally, after drying all components, we apply a certified disinfectant product for air conditioning use, which eliminates residual bacteria and fungi without leaving hazardous chemical residues. Call us, message us on WhatsApp, or request your quote online — we'll respond in under 10 minutes during business hours.

It's one of the most common problems in domestic air conditioning on the Costa Blanca, and hardly anyone knows why it happens. When you turn on the air conditioning after winter or after several weeks of disuse, a smell of damp, mould, or something unpleasant and organic emerges, lingering in the room for hours. The cause is biological. The internal coil of the air conditioner condenses moisture every time the unit cools. This constant humidity, combined with the organic dust that enters through the filters and the moderate indoor temperature when the unit is off, creates the perfect environment for bacterial and fungal colonies to grow. After a deep sanitisation, the noticeable effects appear immediately. The unpleasant odour disappears from the first use. The unit recovers between 10 and 25 percent of its original cooling performance (because a clean coil transfers heat better). Electricity consumption decreases proportionally to the recovered performance. And respiratory symptoms in sensitive individuals clearly reduce or disappear. Air conditioners on the Costa Blanca accumulate dirt significantly faster than in dry inland regions. Three factors combine. Firstly, the average relative humidity in coastal areas is 70-75 percent for a large part of the year, keeping the coil constantly exposed to condensation. Secondly, the Saharan dust that arrives each summer leaves a thin but sticky layer that adheres to the fins and traps other contaminants. Thirdly, the sea air with suspended particles loaded with salts contributes extra organic material to the filter.

2-3 hours per standard indoor unit. For multi-splits, add 1-2 hours per extra unit. We use protective materials to avoid soiling. Electronic board failure due to power surges, humidity, or component ageing. It's relatively common in areas with electrical storms like the Vega Baja interior in August. The repair may involve replacing the entire board or, if locatable, replacing a specific capacitor or resistor. It depends heavily on the model and parts availability. For premium equipment from recognised brands (Mitsubishi, Daikin, LG) aged 10-12 years, repair often still makes sense because the overall quality justifies extending its lifespan. For basic equipment aged 7-8 years, replacement is almost always the reasonable decision.

The price for gas refills in Cerdanyola (Mataró) typically ranges between €126 and €1602. The final figure depends on the property's condition, materials, and work time. We always provide a fixed price before starting. 30-day guarantee on the service. If odours return, we repeat the service at no extra cost. Burned-out compressor in economy-range equipment with 6-9 years of intensive use. This is the most expensive fault. Replacing the compressor costs a significant portion of a new unit's price and is only worthwhile for premium equipment with a reasonable remaining lifespan. For basic equipment, we usually recommend replacement.