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Why are portable air conditioners sold out in the UK?

It is not your imagination — the good units vanish in hours every heatwave. Here is why, and how to stop losing the race.

Search for a decent portable air conditioner on the second hot day of a UK heatwave and you will hit the same wall everywhere: "out of stock", "sold out", "notify me". It is one of the most reliable patterns in British retail, and it comes down to a simple mismatch between how the UK buys and how retailers stock.

Demand that arrives all at once

For about 48 weeks of the year, almost nobody in the UK wants a portable air conditioner. Then the Met Office issues a heat warning and demand spikes overnight — not over weeks, but in a single day, nationally, all at once. No retailer holds enough stock to absorb a surge like that, because for most of the year that stock would sit unsold in a warehouse costing money.

Cautious ordering makes it worse

Air conditioners are bulky, seasonal and capital-intensive to stock. Buyers at the big chains order conservatively, because over-ordering on a product that only sells during heatwaves is a genuine financial risk. The result is thin stock that the first wave of buyers clears in hours. The popular Meaco models in particular sell out almost immediately because they are the ones everyone has read to buy.

They do restock — in short bursts

Here is the part most people miss: retailers restock several times across a hot spell. New pallets arrive, online inventory ticks back up, click-and-collect opens at a few stores. But these windows are short — sometimes an hour — and unannounced. By the time a unit shows "in stock" on a category page you have refreshed yourself, it may already be going again. The people who get one are not the ones refreshing hardest; they are the ones who got told the moment it landed.

How to actually get one

Three things tilt the odds in your favour:

1. Know which model you want before you need it. Decide on a size now (our BTU guide takes five minutes) so you are not researching while stock evaporates.
2. Watch several retailers at once. Stock returns to different shops at different times — AO, Currys, John Lewis, Screwfix, B&Q. Watching one is a coin flip; watching all of them is how you catch the first restock.
3. Get an alert instead of refreshing. A stock alert emails you the second a specific model is available again, so you are first in the queue rather than finding out an hour late.

That last point is the entire reason AirconAlert exists. We watch the UK retailers around the clock and email you the instant your chosen model is back — see what is in stock right now, or set an alert below and stop refreshing.

Figures are approximate and change with energy prices, stock and season. This guide contains affiliate links — we may earn a small commission at no cost to you, and it never affects what we recommend.