The next step is cleaning the coil, the part with thousands of thin fins where the refrigerant gas circulates. We apply a specific descaling product for air conditioning and let it sit for 15-20 minutes depending on the degree of dirt. We rinse with moderate water pressure, 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 performance, too little doesn't remove the dirt. The condensate tray and drain are cleaned separately with descaling product as they often have lime scale build-up. 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. Yes, we use certified products for domestic air conditioning. They are non-toxic, leaving no chemical residues in the air after rinsing and drying.

The most concerning aspect is not the smell itself, but what it indicates. The volatile compounds produced by these growing microorganisms are respiratory irritants and can cause headaches, nasal congestion, throat irritation, and worsening asthma in sensitive individuals or those with allergies. Children and the elderly are particularly susceptible. What you breathe every time the air conditioning is on is air that has passed through the colonised coil. Air conditioning units 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 charged with salts brings extra organic material to the filter. 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.

2-3 hours per standard indoor unit. For multi-splits, add 1-2 hours per extra unit. We use protective materials to avoid making a mess. Electronic boards can fail due to overvoltage, humidity, or component aging. This is relatively common in areas with thunderstorms like the interior of Vega Baja in August. The repair may involve replacing the entire board or, if identifiable, replacing a specific capacitor or resistor. It depends heavily on the model and parts availability. We arrive with a complete set of instruments. Manometers for pressure, contact and infrared thermometers, electronic gas leak detectors, multimeters, and clamp meters for electrical measurements. We also bring each brand's specific diagnostic application to read error codes stored in the board.

The price for a gas refill in Eixample (Mataró) typically ranges between €126 and €1602. The final amount depends on the property's condition, materials, and labour time. We always provide a firm quote before starting. 30-day warranty on the service. If the odours return, we repeat the service at no extra cost. Call us, message us on WhatsApp, or request your quote online — we'll reply in under 10 minutes during business hours.