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Atmos 12000 BTU Smart Portable Air Conditioner with Heat Pump

SKU: Atmos12000 Quickfind Code: 2026852
Energy Label

Air Conditioner Calculator

Use our handy calculator, which will help you figure out exactly what size of unit you require for your office or home.

What are the room dimensions?

How many people and heat sources are in the room?

What is BTU?

A BTU (British Thermal Unit) is a rating used to determine the cooling capacity an Air Conditioner.

Typically a minimum of 7000 BTU is needed to cool a small room, whereas commercial units can reach up to 25,000 BTU and beyond. Simply, the greater the BTU, the larger the space that the unit can cool.

This product is no longer available.

Product Options

Room Size

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ELL air conditioner.
ELL air conditioner.

ELL 4-in-1 Smart Air Conditioner

The ELL Atmos12000 4-in-1 Smart Air Conditioner combines reliability and premium Scandinavian design with versatile climate control, making it a smart addition to any home or office up to 24 sqm. Finished in a deep, contemporary anthracite grey – it perfectly matches modern interiors, radiators and fittings. Control couldn’t be easier. The large LED touch display offers easy adjustments, or use the intuitive smartphone app or popular voice assistants to adjust temperature, fan speed and schedules from wherever you are.

Amazon Alexa compatible.
Google assistant compatible.

4-in-1 Air Conditioner with Heating

  • The Atmos12000 combines cooling, heating, dehumidifying and fan modes for year-round comfort.
  • Switch to the fan mode for personal cooling when you don't need to cool the whole room.
  • Installation couldn't be easier, simply plug the unit in, vent through a window and it's ready to go.
ELL air conditioner.

Dehumidifier

  • Ideal for days when the air feels heavy and humid, this feature works hard to pull excess moisture from the room.
  • By keeping humidity levels in check, it helps protect your home from problems like condensation build-up, mould growth and that musty smell you sometimes notice in damp spaces.
  • It can even help speed up drying laundry indoors, making it a practical choice for year-round use.
ELL smart features.
smart operation.

Smart Operation

Control and schedule with your phone or voice assistant for ultimate convenience. Smart scheduling saves energy.

LED display.

Digital LED Display

Large, clear touch panel for simple adjustments.

Lightweight and portable.

Portable Design

Castor wheels and integrated handles allow easy movement between rooms.

24 hour timer.

24 Hour Timer

When you don't need smart control. Pre-cool rooms to suit your routine and save energy.

Sleep mode.

Sleep Mode

Reduces fan noise and dims lights for comfortable sleep.

Window kit and remote.

Complete Kit

Includes window kit (For sliding windows or doors) and remote control for immediate setup and operation.

What’s Included

  • 1 × ELL Air Conditioner
  • 1 × Exhaust Hose
  • 1 × Exhaust Fan Outlet
  • 1 × Window Kit (For sliding windows or doors)
  • 1 × Remote Control

Downloads

User Guide »

The details

The ELL 4‑in‑1 Smart Air Conditioner combines reliability and premium Scandinavian design with versatile climate control, making it a smart addition to any home or office. Finished in a deep, modern anthracite grey often seen on contemporary window frames and architectural details – it blends seamlessly with modern interiors, radiators and fittings.

Designed to cool or heat spaces up to 24 sqm (260 sqft), this compact unit slots neatly into any corner without sacrificing floor space. It offers four functions in one: cooling, heating, dehumidifying and fan, giving you year‑round comfort in a single appliance.

Control couldn’t be easier. Use the intuitive smartphone app or popular voice assistants to adjust temperature, fan speed and schedules from wherever you are. On the unit itself, the large LED touchscreen display makes fine‑tuning simple. It’s ready to go straight out of the box with no permanent installation required, and with castor wheels and side handles, you can move it from room to room effortlessly.

Essential info

  • 4‑in‑1 functions: Cooling, heating, dehumidifying and ventilation
  • 3.25 kW (12,000 BTU) cooling capacity
  • Large digital LED display and remote control
  • 3 fan speeds plus auto mode
  • Auto swing function for even airflow
  • Touchscreen controls
  • Sleep mode and child lock
  • 24‑hour timer
  • Wi‑Fi app control and voice assistant compatibility
  • Eco‑friendly refrigerant: R290 (210g)
  • 12‑month hassle‑free warranty

More info

  • Easy to move with castors and integrated handles
  • Hose diameter: 15 cm
  • Note: The window kit is designed for sliding windows or doors and isn’t suitable for casement‑style windows.

What’s in the box?

  • 1 × Air conditioner
  • 1 × Exhaust hose
  • 1 × Exhaust fan outlet
  • 1 × Window kit
  • 1 × Remote control
View user manual »

Useful information

All portable air conditioners need to vent warm air outside to work efficiently. This model includes a hose and a window kit for sliding or sash windows. A fishtail adapter is supplied for most other openings. For even better performance, you can add an optional universal window seal at checkout.

 

Power & Running Costs

Power Input (Cooling) 1245W
Cost Per Day* (July 2025 UK Price Cap - 25.73p)
*Based on average use of 4 hours a day
£1.28
Cost Per Hour* (July 2025 UK Price Cap - 25.73p) 32p

Features

Timer
Heating Function
Heat pump for efficient heating, perfect for year round use
Fan speeds
The higher the fan speed, the more air is conditioned by the air con so the cooler the room will be.
3 speeds + Auto
Smart
Can be operated or scheduled using your smart phone or tablet.
Auto Restart
Restarts after power failures and reverts to your previous settings.

Key Information

Brand ELL
Type Portable
Maximum Cooling Area 24sqm
Cooling Power (BTU)
The maximum cooling power of your air con in British Thermal Units. The greater the BTU, the larger the space the unit can cool.
12000
Portable
Refrigeration Gas
R290 is an energy-efficient refrigerant, an eco-friendly alternative with zero ozone depletion potential (ODP). R290 does also not require installation by an F-Gas certified engineer, whereas R32 requires installation by an F-Gas certified engineer.
R290
Cooling Power (kW)
The maximum cooling power of your air con in kilowatts. The greater the kW, the larger the space the unit can cool.
3.25kW
Power Supply (V/hz) 220-240V/50hz
Energy Rating A
Noise level
How loud your Air Con is. A normal conversation is about 60dB
65dB (A)
Condition New

Dimensions & Weight

Max. Hose Length 1.5Metres
Weight 26kg
Height 69cm
Width 34cm
Depth 37cm

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