What Makes 2025’s Best Ductless Air Conditioners the Smart Choice for UK Homes?

Advantages of Using Ductless Air Conditioners for Cooling

Ductless air conditioners, also called mini split systems, present an alternative to conventional HVAC setups. They consist of an outdoor condenser unit connected to one or more indoor wall-mounted units delivering cooled air directly to designated rooms. This configuration avoids the need for ductwork, which is often difficult or unavailable in many UK homes.

Key Characteristics of Ductless ACs

• Zone-Specific Cooling: Allows temperature regulation in individual rooms or zones, cutting energy usage in unoccupied areas.
• Energy Efficiency: Several models hold A++ energy ratings and SEER values between 16 and over 30, reducing electricity consumption.
• Smart Features: Many units support Wi-Fi control, smartphone apps, and voice assistant integration (e.g., Alexa, Google Home) for remote management and scheduling.
• Quiet and Compact: Indoor units are small and operate quietly, suitable for bedrooms, offices, and living spaces.
• Year-Round Functionality: Some units work as heat pumps, providing heating in colder months, meeting seasonal demands in the UK climate.
• Easy Installation: Typically requires only a small hole for refrigerant lines, making installation less intrusive and more cost-effective than ducted systems.

Examples of Ductless Air Conditioner Models Available in the UK for 2025

Below are descriptions of several ductless air conditioners available in the UK market, providing a variety of cooling capacities, efficiencies, and smart features.

LG S12EC Smart Wall-Mounted Air Conditioner

• Cooling Capacity: 12,000 BTU, appropriate for medium-sized rooms around 550 sq. ft.
• Energy Rating: A++ for potentially lower energy consumption.
• Smart Features: Wi-Fi enabled with app control and compatibility with Alexa and Google Home.
• Additional Functions: Includes heat pump, dehumidification, and ventilation modes.
• Performance: Designed to automatically adjust temperature and humidity levels.
• Noise: Operates quietly, fitting for bedrooms and living rooms.

The LG S12EC offers multiple functions including cooling and heating with smart home integration.

ElectriQ iQool 10000 BTU Wall Mounted Smart AC

• Cooling Capacity: 10,000 BTU, suitable for rooms up to 450 sq. ft.
• Smart Controls: Supports Wi-Fi connectivity and voice assistant integration.
• Eco Features: Includes programmable modes to reduce power usage.
• Design: Slim, space-efficient wall-mounted unit with quiet operation.

This model provides smart connectivity and convenience for users wanting adaptable cooling options.

Daitsu Arctic DS9KDP Split Air Conditioner

• Cooling Capacity: 9,000 BTU suitable for smaller to medium rooms (about 15–20 sqm).
• Energy Efficiency: Rated A++ aiming to lower electricity costs and environmental impact.
• Design: Compact and quiet, ideal for bedrooms or workspaces.
• Usage: Offers various modes with straightforward controls.

Daitsu delivers an option focused on efficiency and quiet operation for smaller areas.

LG C12AWR Wall Mounted Air Conditioner

• Cooling Capacity: 12,000 BTU for medium to larger rooms.
• Energy Rating: A++ designed for energy-saving performance.
• Additional Features: Equipped with air filtration to reduce dust and allergens.
• Operation: Includes a quiet mode minimizing noise for bedrooms or studies.
• Style: Contemporary silver finish.

The LG C12AWR combines air purification with cooling and quiet operation.

Introduction of Ductless Portable Air Conditioning Models

Morphy Richards has launched a ductless portable air conditioner created for mobility and ease of use without ducts or window installation.

• Product Overview: Intended to be easily moved without ductwork or window vents.
• Use Case: Model was trialled in the Paris Olympic Village under hot summer conditions.
• Availability: Expected to be released in the UK in 2025 after launch events.
• User Suitability: Suited for renters, those lacking window access, or anyone needing temporary cooling.

This product broadens options for ductless cooling that does not require permanent setup.

Overview of Ductless AC Operation and Inverter Technology

Ductless mini split systems operate by transferring heat via refrigerant circuits between indoor and outdoor units. In cooling mode, heat is absorbed inside and expelled outside. Heating mode (when available) reverses this process.

About Inverter Technology

Many modern ductless ACs use inverter compressors that vary their speed according to cooling demands, offering:

• Potential Energy Savings: Some models achieve up to 30% less power use compared to traditional non-inverter compressors.
• Consistent Temperatures: Helps minimize temperature swings.
• Lower Noise: Smoother compressor operation reduces noise levels.
• Longevity: Less mechanical stress may extend system lifespan.

Inverter technology is common in ductless systems, improving energy efficiency and comfort.

Installation Information Relevant for UK Residences

• Minimal Disruption: Installation usually requires a small wall hole for refrigerant lines.
• Suitability: Ideal for older buildings without ductwork where traditional AC installation is difficult or expensive.
• Timeframe: Generally faster and simpler than fitting conventional ducted units.
• Professional Support: Recommended to hire certified HVAC experts for correct sizing, refrigerant charging, and placement.
• Multi-Zone Support: One outdoor unit can serve multiple indoor units for zoned temperature control.

Environmental and Energy Efficiency Considerations

Choosing ductless units with A++ ratings and high SEER may help reduce:

• Electricity Consumption: Efficient models use less power.
• Carbon Footprint: Lower energy demand supports reduced environmental impact.
• Wasteful Operation: Smart scheduling on Wi-Fi enabled units enables controlled cooling.

In 2025, energy-efficient ductless ACs align with goals for sustainable household energy use.

Factors to Consider When Selecting a Ductless AC Unit

Considerations include:

• Correct Cooling Capacity: Match BTU to room sizes, e.g., approximately 9,000 BTU for smaller rooms and 12,000 BTU for larger spaces.
• Energy Efficiency Ratings: Models with A++ rating and suitable SEER values are recommended for reduced energy use.
• Smart Features: Remote control and programming enhance convenience.
• Noise Levels: Important for environments such as bedrooms or offices.
• Brand Reputation and Support: Look for trusted brands offering warranties and UK service.
• Extra Functions: Heating, dehumidification, and filtration options can improve comfort.
• Installation Assistance: Availability of professional installation and complete kits helps ensure optimal system performance.

Summary

Ductless air conditioners sold in the UK in 2025 provide options for energy-efficient, flexible room cooling. Models like the LG S12EC, Daitsu Arctic DS9KDP, and ElectriQ iQool offer varying capacities, energy ratings, and user-friendly features suitable for homes and workplaces. The arrival of ductless portable models also offers alternative cooling for mobility requirements.

These systems feature relatively straightforward installation and zone-based temperature control, helping UK households manage comfort and energy consumption effectively. Choosing a suitable model according to room size, efficiency, and desired features supports effective cooling while considering environmental impact.

Sources

• The 5 Best Smart Wall-Mounted Air Conditioners in June 2025 - HomeSmarter

• [World’s First Ductless Portable AC by Morphy Richards

  Cooling Athletes at Paris Olympics](https://morphyrichards.com/blogs/news/worlds-first-ductless-portable-ac-by-morphy-richards-cooling-athletes-at-paris-olympics)

• Best Mini Split for Cold Climates in The UK - Let’s Heat

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