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12,000 BTU portable air conditioners in stock

12,000 BTU suits a room of roughly 35m² at 340 BTU per square metre. Live Amazon and eBay stock, updated every 2 hours.

Checked across UK retailers · 329 units tracked

In stock now · cheapest
BLACK+DECKER 12000 BTU 3 in 1 PORTABLE Air Conditioner *For Spares*
BLACK+DECKER 12000 BTU 3 in 1 PORTABLE Air Conditioner *For Spares*

329 of 329 products

Pro Breeze OmniCool 12,000 BTU Wi-Fi
Pro Breeze OmniCool 12,000 BTU Wi-Fi
Pro Breeze
Low stockRestock alert
£349.98
12000 BTU · 58dB · Amazon · just now
eBay · Sold out
DREO 12000 BTU Portable Air Conditioner, 3-in-1 Cool/Fan/Dry Quiet AC Unit for Bedroom/Office, Smart App/Voice/Remote Control, Drainage-Free, Universal Window Kit, 3.6L/H Dehumidification, AC516S
DREO 12000 BTU Portable Air Conditioner, 3-in-1 Cool/Fan/Dry Quiet AC Unit for Bedroom/Office, Smart App/Voice/Remote Control, Drainage-Free, Universal Window Kit, 3.6L/H Dehumidification, AC516S
Dreo
In stockRestock alert
£599.99
12000 BTU · Amazon · 1h ago
Dreo Smart 3-in-1 Portable Air Conditioner, 12000 BTU Drainage-Free Cooling AC Unit, Silent Mobile Air Conditioner for Bedroom, APP/Voice/Remote Control, 24h Timer with Fan & Dehumidifier, AC516S
Dreo Smart 3-in-1 Portable Air Conditioner, 12000 BTU Drainage-Free Cooling AC Unit, Silent Mobile Air Conditioner for Bedroom, APP/Voice/Remote Control, 24h Timer with Fan & Dehumidifier, AC516S
Dreo
Low stockRestock alert
£599.99
12000 BTU · Amazon · just now
electriQ iQool Plus 12,000 BTU A+++ Smart Wall Split Air Conditioner & Heat Pump, Wi‑Fi/Voice Control, “I Feel” Sensor, Self‑Cleaning, Blue‑Fin Coating, Includes 5 m Pipe Kit with 5 Years Warranty
electriQ iQool Plus 12,000 BTU A+++ Smart Wall Split Air Conditioner & Heat Pump, Wi‑Fi/Voice Control, “I Feel” Sensor, Self‑Cleaning, Blue‑Fin Coating, Includes 5 m Pipe Kit with 5 Years Warranty
electriQ
In stockRestock alert
£699
Amazon · 1h ago
DREO Smart 3-in-1 Portable AC 12,000 BTU — WiFi/Voice/App Control
DREO Smart 3-in-1 Portable AC 12,000 BTU — WiFi/Voice/App Control
Dreo
Low stockRestock alert
£599.99
12000 BTU · 46dB · Amazon · just now
Dreo Smart 3-in-1 Portable Air Conditioner 12000 BTU
Dreo Smart 3-in-1 Portable Air Conditioner 12000 BTU
Dreo
Low stockRestock alert
£349.98
Amazon · just now
Portable Air Conditioner 12000 BTU for Rooms Up to 350 Sq.Ft. with Fan, Dehumidifier, Remote Control and 24-Hour Timer, Window Installation Kit Included
Portable Air Conditioner 12000 BTU for Rooms Up to 350 Sq.Ft. with Fan, Dehumidifier, Remote Control and 24-Hour Timer, Window Installation Kit Included
Portable
In stockRestock alert
£717.99
12000 BTU · Amazon · 1h ago
Portable Air Conditioner 12000 BTU for Rooms Up to 350 Sq.Ft. with Fan, Dehumidifier, Remote Control and 24-Hour Timer, Window Installation Kit Included
Portable Air Conditioner 12000 BTU for Rooms Up to 350 Sq.Ft. with Fan, Dehumidifier, Remote Control and 24-Hour Timer, Window Installation Kit Included
Portable
In stockRestock alert
£554.99
12000 BTU · Amazon · 1h ago
Portable Air Conditioner 12000 BTU Smart Unit with Cool & Dry Modes, Oscillation, Remote Control & Window Installation Kit for Home or Office Use
Portable Air Conditioner 12000 BTU Smart Unit with Cool & Dry Modes, Oscillation, Remote Control & Window Installation Kit for Home or Office Use
Portable
In stockRestock alert
£619.99
12000 BTU · Amazon · 1h ago
12000 BTU Portable Air Conditioner, Cools 450 sq.ft, Quiet Fan & Dehumidifier
12000 BTU Portable Air Conditioner, Cools 450 sq.ft, Quiet Fan & Dehumidifier
12000
In stockRestock alert
£563.99
12000 BTU · Amazon · 1h ago
Portable Air Conditioner 12000 BTU Smart Unit with Cool & Dry Modes, Oscillation, Remote Control & Window Installation Kit for Home or Office Use
Portable Air Conditioner 12000 BTU Smart Unit with Cool & Dry Modes, Oscillation, Remote Control & Window Installation Kit for Home or Office Use
Portable
In stockRestock alert
£526.99
12000 BTU · Amazon · 1h ago
Portable Air Conditioner 12000 BTU for Rooms Up to 350 Sq.Ft. with Fan, Dehumidifier, Remote Control and 24-Hour Timer, Window Installation Kit Included
Portable Air Conditioner 12000 BTU for Rooms Up to 350 Sq.Ft. with Fan, Dehumidifier, Remote Control and 24-Hour Timer, Window Installation Kit Included
Portable
In stockRestock alert
£600.99
12000 BTU · Amazon · 1h ago
Portable Air Conditioner 12000 BTU, Remote Control, 24H Timer
Portable Air Conditioner 12000 BTU, Remote Control, 24H Timer
Portable
In stockRestock alert
£469.30
12000 BTU · Amazon · 1h ago
Portable Air Conditioner 12000 BTU with Remote Control
Portable Air Conditioner 12000 BTU with Remote Control
Portable
In stockRestock alert
£618.99
12000 BTU · Amazon · 1h ago
Portable Air Conditioner 12000 BTU Smart Unit with Cool & Dry Modes, Oscillation, Remote Control & Window Installation Kit for Home or Office Use
Portable Air Conditioner 12000 BTU Smart Unit with Cool & Dry Modes, Oscillation, Remote Control & Window Installation Kit for Home or Office Use
Portable
In stockRestock alert
£665.99
12000 BTU · Amazon · 1h ago
12000 BTU Portable Air Conditioner, 3-in-1 Cooling, Dehumidify & Fan, Quiet Digital Control with Timer for Home, Office & Bedroom Use
12000 BTU Portable Air Conditioner, 3-in-1 Cooling, Dehumidify & Fan, Quiet Digital Control with Timer for Home, Office & Bedroom Use
12000
In stockRestock alert
£902.99
12000 BTU · Amazon · 1h ago
GYFGRTQ Portable Air Conditioner 12000 BTU for Rooms Up to 350 Sq Ft, Cooling Fan & Dehumidifier with Remote, 24H Timer & Window Mount Kit Home Office Use, 12000 BTU, 12000 BTU
GYFGRTQ Portable Air Conditioner 12000 BTU for Rooms Up to 350 Sq Ft, Cooling Fan & Dehumidifier with Remote, 24H Timer & Window Mount Kit Home Office Use, 12000 BTU, 12000 BTU
GYFGRTQ
In stockRestock alert
£6,442.60
12000 BTU · Amazon · 1h ago
12000 BTU Portable Air Conditer, Efficient Smart AC with Dehumidifier & Fan, Ideal for Quiet Cooling in Bedrooms and Home Offices, Includes Window Kit for Easy Setup
12000 BTU Portable Air Conditer, Efficient Smart AC with Dehumidifier & Fan, Ideal for Quiet Cooling in Bedrooms and Home Offices, Includes Window Kit for Easy Setup
12000
In stockRestock alert
£613.47
12000 BTU · Amazon · 1h ago
Portable Air Conditioner 12000 BTU, Inverter AC with Smart Cooling, Heating, Dehumidifier, Ventilation, and Dust Filter, 360° Cast for Efficient Home Cooling
Portable Air Conditioner 12000 BTU, Inverter AC with Smart Cooling, Heating, Dehumidifier, Ventilation, and Dust Filter, 360° Cast for Efficient Home Cooling
Portable
In stockRestock alert
£1,200.99
12000 BTU · Amazon · 1h ago
Portable Air Conditioner 12000 BTU, Inverter AC with Smart Cooling, Heating, Dehumidifier, Ventilation, and Dust Filter, 360° Cast for Efficient Home Cooling
Portable Air Conditioner 12000 BTU, Inverter AC with Smart Cooling, Heating, Dehumidifier, Ventilation, and Dust Filter, 360° Cast for Efficient Home Cooling
Portable
In stockRestock alert
£1,200.99
12000 BTU · Amazon · 1h ago
12000 BTU Portable Air Conditioner with Dehumidifier, 3-in-1 Cooling & Quiet Fan, Easy Setup with Wheels, Energy Efficient, Smart Digital Control for Bedroom, Office, Dorm
12000 BTU Portable Air Conditioner with Dehumidifier, 3-in-1 Cooling & Quiet Fan, Easy Setup with Wheels, Energy Efficient, Smart Digital Control for Bedroom, Office, Dorm
12000
In stockRestock alert
£988.99
12000 BTU · Amazon · 1h ago
Belaco 12000 BTU Air Conditioning Unit 3-in-1 Portable Air Conditioner
Belaco 12000 BTU Air Conditioning Unit 3-in-1 Portable Air Conditioner
Belaco
In stockRestock alert
£649.99
12000 BTU · Amazon · 1h ago
Portable Air Conditer 12000 BTU, Efficient Cooling and Dehumidificat for Rooms up to 450 sq.ft, User-Friendly Remote Control, Ideal for Home and Office Use
Portable Air Conditer 12000 BTU, Efficient Cooling and Dehumidificat for Rooms up to 450 sq.ft, User-Friendly Remote Control, Ideal for Home and Office Use
Portable
In stockRestock alert
£678.15
12000 BTU · Amazon · 1h ago
Portable Air Conditioner 12000 BTU, Inverter AC with Smart Cooling, Heating, Dehumidifier, Ventilation, and Dust Filter, 360° Cast for Efficient Home Cooling
Portable Air Conditioner 12000 BTU, Inverter AC with Smart Cooling, Heating, Dehumidifier, Ventilation, and Dust Filter, 360° Cast for Efficient Home Cooling
Portable
In stockRestock alert
£1,227.99
12000 BTU · Amazon · 1h ago
Other capacities in Portable AC
5,000 BTU7,000 BTU8,000 BTU9,000 BTU10,000 BTU11,000 BTU12,000 BTU13,000 BTU14,000 BTU16,000 BTU18,000 BTU
Room sizing

Will 12,000 BTU suit your room?

As a rule of thumb, air conditioning needs roughly 340 BTU per square metre. A 12,000 BTU unit will cool approximately 35m² comfortably on the hottest days. South-facing rooms and high ceilings need more capacity. Undersized units run flat-out and never quite bring the room temperature down.

Work out your BTU →
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