Air Conditioning Buyers Hit Spare-Part Shortages and Efficiency Limits

Consumers who purchase low‑cost inverter air‑conditioners, such as the private‑label “Aire+” sold by Leroy Merlin in Portugal, often find that when the electronic board fails the required replacement part is unavailable or takes months to arrive. The brand is a label applied to equipment made by third‑party manufacturers, so the responsibility for spare‑parts rests on the retailer’s relationship with the original producer. Although Spain’s Decreto‑Ley 84/2021 obliges producers to keep parts available for ten years, the law does not guarantee free or rapid delivery and can be hard to enforce when the actual manufacturer is not identifiable.

Most portable, single‑tube air‑conditioners sold across Europe exhibit a design flaw: they draw warm air from the room to cool their internal circuit and then expel that same warm air outside through a single hose. The resulting pressure difference pulls hot outdoor air back into the room, limiting the temperature drop to only a few degrees. Users can improve performance by sealing the window opening, shortening the hose, avoiding bends, and keeping interior doors closed. For better efficiency, double‑tube units that use a separate external air intake are recommended, though they are less common in stores.