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Portable air conditioner guides
Plain-English UK guides — everything to know before you buy, and how to beat the heatwave sell-out.
When will air conditioners be back in stock in the UK?
When UK retailers actually restock portable air conditioners, how long the windows last, and how to be first the moment your model is back.
Air conditioner stock checker (UK)
A free live stock checker for portable air conditioners across the major UK retailers — see what's in stock right now and get alerted when sold-out models return.
Best portable air conditioners UK 2026
The portable ACs worth buying this summer, with sizing, running costs and live stock alerts.
How much does it cost to run a portable air conditioner in the UK?
What a portable air conditioner actually costs to run in the UK — per hour, per night and per month — worked out at 2026 electricity prices, with tips to cut the bill.
What size portable air conditioner do I need?
How to pick the right BTU rating for your room size in the UK — a simple table, the 340-BTU-per-m² rule, and the adjustments for sunny or top-floor rooms.
Why are portable air conditioners sold out in the UK?
Why portable air conditioners sell out within hours of a UK heatwave, how often retailers restock, and the trick to actually getting one before it is gone again.
Portable air conditioner vs fan vs air cooler: what actually cools a UK room?
Fans, evaporative air coolers and portable air conditioners are not the same thing. Here is what each actually does to the temperature in a UK heatwave — and which to buy.
Quietest portable air conditioners for bedrooms (UK)
Noise is the dealbreaker for cooling a bedroom. Here is what dB figures actually mean for sleep, and which UK portable air conditioners are genuinely quiet.
Air conditioning for rented flats: cooling without permanent installation
Renting and can’t fit a fixed AC? Here are the cooling options that work in a UK flat without drilling, landlord permission, or losing your deposit.
Do portable air conditioners need to be vented out a window?
Yes — and here is why, how the window hose works, what to do if you have no suitable window, and why "ventless" portable ACs are not really air conditioners.
How to keep your house cool in a heatwave (UK): what works and what doesn’t
UK homes are built to keep heat in. Here is the honest, ordered list of what actually keeps a house cool in a heatwave — from free habits to a proper air conditioner.