Russell Hobbs RHPAC11001 Portable Air Conditioner

The Russell Hobbs RHPAC11001 is a big, budget-friendly single-hose portable that cools, dehumidifies and runs as a fan, and it is one of the better value 11,000 BTU units on the UK market. That capacity is a lot of cooling for the money: it brings a warm living room or home office of up to around 21 m² down to a comfortable temperature quickly, provided you keep the doors shut and seal the window kit properly. It is also quieter than a good many single-hose rivals, and the night mode is genuinely useful rather than a token setting, dimming the display and slowing the fan so it is restful enough to leave running while you drop off.

The compromises are the familiar budget-portable ones, and you should know them before buying. At 31 kg it is heavy, so despite the smooth castors this is a unit you wheel around one floor rather than carry upstairs. The window kit is made for UPVC windows that open on three or four sides, and the manual rules out middle-opening, skylight and wooden-framed windows, so on many UK windows plan to spend a few minutes improvising a decent seal. And like every single-hose portable it is audible at full power, closer to a loud fridge than a quiet fan. Note too that this 2-in-1 model cools and dehumidifies but does not heat. Take the trade-offs on board and it is a lot of cooling for a fair price, which is exactly why it sells so well.

This is Russell Hobbs' large-capacity portable: 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, though Russell Hobbs markets it as a 2-in-1 air conditioner and dehumidifier. There is no heating mode on this version, so treat it as a summer and shoulder-season cooler rather than a year-round appliance. Nothing needs installing and nothing needs an F-Gas engineer; you buy it, wheel it into place, fit the window kit and switch it on the same day.

The 11,000 BTU rating (about 3.2 kW) is the reason to choose it. It is sized for rooms of roughly 13 to 21 m², which covers most living rooms, larger bedrooms and home offices, and it has the muscle to cool a genuinely warm room rather than just take the edge off. As with any single-hose portable, it only performs if you help it: shut the internal doors, draw the curtains against direct sun and seal the window kit, or warm air leaks straight back in around the hose. Do that and it cools quickly and holds temperature without fuss.

It suits someone who wants a lot of cooling for a modest outlay and does not want the cost or disruption of a fitted split. It is less suited to anyone who needs to move it upstairs regularly, since at 31 kg it is a two-person lift, or to a small box room, where a cheaper 7,000 or 9,000 BTU unit would be lighter, quieter and quite enough; our BTU calculator will tell you which side of that line your room falls. The other thing to weigh is your windows: the supplied kit is built for UPVC windows that open on three or four sides, so if you have middle-opening, skylight or wooden-framed windows you will need to improvise a seal or buy a third-party window-seal kit to get the best out of it.

The RHPAC11001 carries an inflated recommended price of around £459, but the real in-season figure is lower: expect to pay in the region of £380 from Amazon, which is usually the best price for a new unit, with reconditioned and repackaged stock turning up cheaper still at around £300 from clearance sellers. It is also widely stocked by B&Q, Homebase, Robert Dyas and Freemans, so it pays to compare before buying. It sells out in heatwaves, so check stock as well as price, and if you find it discounted out of season it is worth grabbing.

Running it is the number to keep an eye on, because 11,000 BTU is a large unit. It draws about 1.23 kW on full cooling, so at the Ofgem price cap unit rate of 26.32p per kWh (October 2026) that is roughly 32p an hour, or about £2.60 for an eight-hour night at full tilt. In practice it costs less: night mode and the timer cut the draw, and once the room is down to temperature the compressor cycles rather than running flat out. The Class A rating and R290 refrigerant help, but a big portable will always cost more to run than a small one, so size it to the room rather than buying big for headroom. Prices correct as of October 2026; electricity rates updated for the October to December 2026 price cap. The energy price cap changes quarterly, so check current rates before budgeting.