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 systems, letting 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 performance, too little doesn't remove the dirt. The condensate tray and drain are cleaned separately with descaler as they often have accumulated 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 that eliminates residual bacteria and fungi without leaving hazardous chemical residues. Yes, we use certified products for domestic air conditioning. Non-toxic, with no chemical residues in the air after rinsing and drying.

It's one of the most common problems in domestic air conditioning on the Costa Blanca, and almost no one knows why it happens. When you turn on the air conditioner after winter or after several weeks of non-use, a smell of dampness, mould, or something unpleasant and organic emerges, lingering in the room for hours. The cause is biological. The indoor coil of the air conditioner condenses moisture every time the unit cools. This constant moisture, combined with organic dust entering through the filters and the moderate indoor temperature when the unit is off, creates the perfect environment for bacterial and fungal colonies to grow. 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 much 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 adds 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 drops proportionally to the recovered performance. And respiratory symptoms in sensitive individuals are clearly reduced 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 stains. Manufacturer's official warranty (3-5 years) plus our 30-day coverage on labour. Toshiba, Panasonic, and Fujitsu are a step down in price but not much in quality. They are a good option for tight budgets. More economical brands like basic Samsung, Hisense, or Hitachi function correctly for the first four or five years, but their efficiency and durability are lower, and they tend to require more maintenance.

The price for gas recharging in Sant Andreu typically ranges between €126 and €1602. The final figure depends on the property's condition, materials, and labour time. We always provide a fixed quote before starting. 30-day warranty on the service. If the odours return, we redo 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.