Portable Air Conditioner vs Air Cooler — UK, Which Should You Buy?
Both claim to cool a room. They do it completely differently — and the running-cost difference is drastic.
A portable AC draws around 1kW (roughly 25p/hour at a typical 24.5p/kWh tariff). An evaporative cooler draws 12–170W, under 1p to 4p/hour. The catch: an air cooler works best in dry heat. On humid nights a portable AC is the only real answer.
Dimplex 3.5kW Portable AC
£599Dimplex brings eighty years of climate control to portable AC: 3.5 kW of cooling, a dehumidify mode and build quality that outlasts budget units.
View Dimplex 3.5kW Portable ACelectriQ 12000 BTU
£299.98Twelve thousand BTUs with an A energy rating and four modes — the electriQ big-room option that doesn’t punish the meter.
View electriQ 12000 BTUOlimpia Splendid Dolceclima 12 WiFi
£469The Dolceclima 12 is Olimpia Splendid’s flagship portable: 12,000 BTU, whisper-tuned airflow and an app that’s genuinely pleasant to use. Premium cooling for open-plan living.
View Olimpia Splendid Dolceclima 12 WiFiComfee 12000 BTU Wi-Fi AC
£379Twelve thousand BTUs with MSmartHome app control and Alexa support — Comfee's big-room unit that you can fire up from the commute.
View Comfee 12000 BTU Wi-Fi ACBlack+Decker 12000
£349The 12,000 BTU Black+Decker handles open-plan living rooms and loft conversions with 3.5kW of refrigeration on tap.
View Black+Decker 12000Costway 12000 WiFi
£300.99A Wi-Fi smart 12K unit with a heat mode for chilly spring evenings. Cool, heat, dehumidify or fan — all from your phone.
View Costway 12000 WiFiSymphony Diet 3D 12i
£139The evaporative classic for larger rooms. Honeycomb cooling media, a 12-litre tank, and airflow that reaches the far end of the loft conversion.
View Symphony Diet 3D 12iHoneywell Slimline
£149The one our editors sleep next to. Slim silver-white tower, full-function remote, and a low fan setting that disappears into the background.
View Honeywell SlimlinePro Breeze Digital
£119A digital cooler with a clear LED display, 3 modes, 3 speeds and a 7-hour timer. Set it from the sofa, forget it all night.
View Pro Breeze DigitalIgenix Slim Tower 60
£74Sixty centimetres of cool for studios, box rooms and rentals. A timer, a remote, and a footprint smaller than a shoebox.
View Igenix Slim Tower 60Russell Hobbs 6L Digital
£89A trusted-name 6-litre digital cooler with remote, three wind modes and an easy-fill tank. The safe pair of hands of British summer.
View Russell Hobbs 6L DigitalBush 6.5L Vortex Blade
£85A 6.5-litre cooler with a 6.5 m/s vortex blast and three modes including sleep. Big-room coverage, small-ticket price.
View Bush 6.5L Vortex BladeIf you are buying for one hot fortnight of an otherwise mild UK summer, an air cooler is usually enough. Facing down a 35°C+ lounge, get a real AC. Both in stock, 2-year guarantee.
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