Pro Breeze 14,000 BTU Portable Air Conditioner

The 14,000 BTU Pro Breeze is the biggest and most powerful portable in the range, a single-hose unit that cools, dehumidifies and runs as a plain fan. It is aimed squarely at large living rooms, loft offices and open-plan spaces that the smaller 9,000 and 12,000 BTU models cannot keep up with, and on that job it delivers: it brings a warm room down to a comfortable temperature quickly, as long as you keep the doors shut and seal the window kit properly. The smart control is genuinely useful rather than a gimmick, with a reliable Wi-Fi app, Alexa and Google support and a 24-hour timer to pre-cool a room before you get home.

Two things hold it back. First, it is heavy at 32.6 kg, so despite the castors this is a unit you wheel between rooms on one floor, not one you carry upstairs. Second, like every single-hose portable it is audible on full power, closer to a loud fridge than a quiet fan, so light sleepers will want the quieter night mode. Note too that this 14,000 BTU size cools, dehumidifies and blows air but does not heat; if you want year-round use, the Pro Breeze 4-in-1 with a heat mode tops out at 12,000 BTU. At north of £700 it is priced at the top of the portable market, but for a big room a smaller unit cannot handle, it earns its place.

This is the flagship of Pro Breeze's portable line: a single-hose unit, meaning it draws in room air, cools it and pushes the waste heat out of a window through one flexible hose. It handles three jobs, cooling, dehumidifying and running as a plain fan, which is why you will see it described as a 3-in-1. The heat mode that turns the smaller Pro Breeze units into a 4-in-1 is not fitted to this size, so treat it as a summer and shoulder-season cooler rather than a year-round appliance. There is nothing to install and nothing that needs an F-Gas engineer; you buy it, wheel it into place, fit the window kit and switch it on the same day.

Size is the reason to choose it. At 14,000 BTU (about 4.1 kW) it is rated for rooms up to around 30 m², which is where the smaller 9,000 and 12,000 BTU units run out of puff. It will cool a genuinely large living room or open-plan space, but only if you help it: shut the doors, close the curtains against direct sun and seal the window kit, or warm air leaks straight back in. Every single-hose portable works this way, and this one is no exception. The 24-hour timer and the app make pre-cooling easy, so the room is comfortable by the time you use it rather than slowly catching up while you sit there.

It suits someone who wants proper cooling in a big room for a few weeks of summer, without the cost or disruption of a fitted split. It is less suited to a small bedroom, where a 7,000 or 9,000 BTU unit is cheaper, lighter and quieter, or to anyone who needs to carry it upstairs regularly. At 32.6 kg this is the heaviest unit in the range, and while it rolls fine on hard floors, it is a two-person lift up a staircase.

Expect to pay around £740 direct from Pro Breeze, which includes free delivery, with specialist retailers a little higher at about £770 and Amazon often discounting below the direct price, so it pays to compare before buying. It sells out in heatwaves, so check stock as well as price. The optional 3-year protection plan is worth pricing up at the same time if you plan to keep it for several summers, since the standard cover is only one year.

Running it is the bigger number to watch, because this is a large unit. As a rough guide it draws in the region of 1.3 kW on full cooling, so at the Ofgem price cap unit rate of 26.11p per kWh (July 2026) that is roughly 34p an hour, or about £2.70 for an eight-hour night at full tilt. In practice it costs less: night mode and the timer cut the draw considerably, and once a room is down to temperature the compressor cycles rather than running flat out. The Class A rating and R290 refrigerant help, but a 14,000 BTU portable will always cost more to run than a small one, so size it to the room rather than buying big for headroom. Prices and rates correct as of July 2026; the energy price cap changes quarterly, so check current rates before budgeting.