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 level of dirt. We rinse with moderately pressurised water, protecting the rest of the unit with plastic to prevent water from reaching unintended areas. The correct technique requires experience: too much pressure bends the fins and reduces performance; too little doesn't remove the dirt. We clean the condensate tray and drain separately with descaling product, as they often 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, text us on WhatsApp, or request a quote online — we'll reply in under 10 minutes during business hours.

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% for much of the year, keeping the coil constantly exposed to condensation. Secondly, Saharan dust arriving each summer leaves a thin but sticky layer that adheres to the fins and traps other pollutants. Thirdly, sea air with suspended particles laden with salts adds extra organic material to the filter. The most concerning aspect is not the smell but what it indicates. The volatile compounds produced by these growing microorganisms are respiratory irritants and, in sensitive individuals or those with allergies, can cause headaches, nasal congestion, throat irritation, and worsen asthma. Children and the elderly are particularly sensitive. What you breathe every time the air conditioning is on is air that has passed through a colonised coil. This is one of the most common problems in domestic air conditioning on the Costa Blanca, and very few people know why it happens. When you turn on the air conditioning after winter or after several weeks of disuse, a smell of dampness, mould, or something unpleasant and organic emerges, lingering in the room for hours. The cause is biological. The indoor coil condenses moisture every time the unit cools. This constant moisture, combined with the organic dust entering through the filters and the moderate indoor temperature when the unit is off, creates the perfect environment for bacteria and fungi colonies to grow.

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. Official manufacturer's warranty (3-5 years) plus our 30-day labour guarantee. Yes, it is mandatory in Spain for any handling of refrigerant gas. Without it, the manufacturer's warranty is voided, and the installation may be declared illegal.

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