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Last updated: 18th March, 2024


Best Wall Mounted Air Conditioning

Best Wall Mounted Air Conditioning

Key takeaways

  • Wall-mounted air conditioners combine efficiency with design to match modern consumer needs.
  • Energy efficiency and noise levels vary among models, affecting overall satisfaction.
  • Selecting the right unit involves balancing cost, performance, and specific features.

Wall-mounted air conditioning refers to a type of air conditioner unit that is installed onto the wall of a room or area.

In the quest for optimal indoor climate control, wall-mounted air conditioning units have emerged as a significant player in the UK market, especially with the 2024 models offering superior temperature management. These units amalgamate efficiency and aesthetic appeal, thereby appealing to both eco-conscious and design-savvy consumers. 

Understanding the key facets of wall-mounted air conditioning, such as energy efficiency ratings, sound levels, and the suitability of various models for different spaces, is imperative for homeowners aiming to make informed purchasing decisions.

The 2024 range of wall-mounted air conditioners showcases advancements in energy efficiency, with some models boasting high SEER (Seasonal Energy Efficiency Ratio) ratings, reflecting their prowess in operating at reduced energy costs. Brands like Lennox are at the forefront, featuring units with up to 24.5 SEER ratings. 

This ensures that consumers not only enjoy a cool environment but do so with minimal impact on their energy bills. Meanwhile, other brands offer a balanced portfolio, focusing on affordability without significantly compromising on performance or efficiency.

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Understanding Wall Mounted Air Conditioning

In 2024, wall-mounted air conditioning units are the epitome of efficiency and design, offering both cooling and heating solutions tailored for modern living spaces.

What Is Wall Mounted Air Conditioning?

Wall-mounted air conditioning refers to a type of air conditioner unit that is installed onto the wall of a room or area. Distinct from traditional central air systems, these units are often part of a ductless mini-split system, comprising an indoor unit mounted on the wall and an outdoor compressor. They are engineered to regulate the temperature of a specific space and are available as single-zone or multi-zone systems depending on the layout and requirements of the property.

Benefits of Wall Mounted Air Conditioners

Energy Efficiency: Wall-mounted air conditioners are celebrated for their capacity to cool or heat only the rooms that are in use, which can lead to significant energy savings. They are often equipped with advanced inverter technology that efficiently adjusts power use in response to the detected temperature changes.

Comfort: Tailoring the climate of individual rooms, these air conditioners ensure personalised comfort. Their presence is often accompanied by a whisper-quiet operation that does not disrupt the serenity of one's environment.

Design Flexibility: With various styles and colours available, wall-mounted air conditioning units can seamlessly integrate into any interior design. This adaptability is complemented by their unobtrusive installation, which preserves the aesthetics of a room while maintaining practical functionality.

Heating Capability: The versatility of wall-mounted units extends to their ability to provide heating, positioning them as a year-round solution for maintaining a comfortable home climate.

Efficiency and comfort, twinned with design integration and dual functionality, articulate the core advantages of wall-mounted air conditioners in contemporary domiciles.

Selecting the Right Model

Securing the optimal wall-mounted air conditioner necessitates a blend of understanding the different types available and the key attributes that will cater to one's requirements. Discerning buyers should consider the UK's unique climate and room sizes while weighing up energy efficiency and performance.

Types of Wall Mounted Air Conditioners

Choosing a wall-mounted air conditioner typically involves deciding between a split air conditioner and a multi-split system. Split units connect one indoor unit to an outdoor compressor, ideal for cooling single rooms. Multi-split systems, on the other hand, allow for several indoor units to connect to one outdoor unit, which facilitates the control of temperatures in multiple rooms simultaneously.

Key Features to Consider

When scrutinising the features, prioritise aspects like dehumidification, noise levels, and user-friendly controls. The best units boast smart features, such as WiFi connectivity and remote control operation. Look for a model with a timer function and a self-cleaning feature to ensure a streamlined user experience with minimal maintenance effort.

Energy Efficiency and Ratings

Energy efficiency is paramount, particularly with respect to the Energy Efficiency Ratio (EER) and Seasonal Energy Efficiency Ratio (SEER). Markedly, the higher the SEER rating, the more energy-efficient the unit is, leading to lower electricity bills. Moreover, models with an Energy Star rating signal adherence to energy efficiency guidelines and can be a financially savvy choice over time.

Cooling and Heating Performance

Wall-mounted air conditioners with inverter technology offer more efficient cooling and heating by continuously adjusting their output to maintain a stable temperature. UK homes will benefit from units that provide powerful cooling and adequate heating capacity. Silence is golden; hence, opt for models with a low noise level around 24 dB to ensure your environment remains quiet and serene.

Design and Installation Considerations

Before choosing a wall-mounted air conditioner for one's home, it's vital to take into account several factors, from the unit's appearance to space needs and the nitty-gritty details of installation.

Aesthetic Design Factors

The design of wall-mounted air conditioners has evolved, offering a range of styles to complement different decors. Nowadays, many units boast a compact and portable design with subtle colours and sleek lines that blend into the background. A unit's indoor and outdoor elements should both be considered for their visual impact on a property.

Space Requirements and Constraints

Floor space is minimal with a wall-mounted unit, since the bulk of the air conditioner sits on the wall. However, one must examine the indoor unit's dimensions to ensure a harmonious fit. In rooms with limited area coverage, such as small offices or bedrooms, the size of the air conditioner ought to be proportionate to the space to maintain balance and prevent overcrowding.

Installation Requirements and Process

Wall-mounted air conditioners generally have straightforward installation requirements. The process includes mounting the indoor unit on an exterior wall and situating the outdoor unit in a location where noise will cause minimal disturbance. Professional installation is recommended—while these units are marketed as easy to install, proper placement, securing, and connecting to the electrical system require a level of expertise to ensure efficiency and safety.

Costs and Budgeting

When investing in wall-mounted air conditioning units in the UK, initial purchasing prices and running costs are critical. Homeowners must also evaluate the total cost of ownership to ensure year-round comfort without overspending.

Price Range and Upfront Costs

The market offers a wide price range for wall-mounted air conditioners. Homeowners might encounter quotes from as low as £200 for basic models, reaching to £600 or above for advanced units boasting high SEER ratings and sophisticated features. These upfront costs are inclusive of the unit itself, but it is prudent to factor in installation fees, which vary widely depending on location and complexity.

  • Basic models: £200 - £400

  • Advanced models: Above £400

Energy Savings and Running Costs

An energy-efficient air conditioner can lead to significant energy savings, reducing electricity bills in the long term. Models with high SEER ratings, such as those by Lennox, typically command a higher purchase price; however, their lower operating costs can provide savings over time. Regular maintenance also aids in retaining efficiency, mitigating costly energy wastage.

  • High SEER rating models: Less energy consumption

  • Regular maintenance: Sustains efficiency and performance

Calculating Total Cost of Ownership

The total cost of ownership extends beyond the purchase price, encompassing running costs, maintenance expenses, and potential repairs. To estimate this, homeowners should consider:

  1. Upfront cost of the air conditioning unit

  2. Average electricity usage (kWh) and current energy tariffs

  3. Maintenance frequency and costs associated with servicing

  4. Projected lifespan of the unit

Energy-efficient models might appear expensive initially, but their reduced impact on electricity bills and lower maintenance frequency can make them a cost-effective solution for maintaining comfort throughout the years.

User Experience and Operation

Selecting the right wall-mounted air conditioning unit is about more than just cooling capacity; user experience and the day-to-day operation are equally important. These systems should strike a balance between effective climate control and user-friendliness.

Controls and Usability

Modern wall-mounted air conditioners boast a variety of control options. Remote controls have become standard, ensuring users can adjust settings without having to reach for the unit. For ultimate convenience, smartphone control offers the ability to manage the air conditioner through an app. This smart functionality often includes 24-hour timers, which enable users to schedule cooling in advance. Ease of use is further enhanced with clear and intuitive interfaces, both on the device and on associated digital platforms.

Noise and Disturbance

A paramount concern for any user is the noise level. The best wall-mounted air conditioners in 2024 have made notable improvements in reducing disturbance. Units like the Lennox MPB Mini-Split advertise low noise levels as quiet as 24 dB, ensuring that quiet operation does not interfere with daily activities or sleep. Several models now include a quiet mode, specifically designed to minimise sound output for times that demand low noise levels, such as during the night.

Maintenance and Cleaning

Maintenance can influence user satisfaction significantly. Units with a self-cleaning function minimise the effort required to maintain air quality, while dust filters and air purification systems trap contaminants and need regular cleaning to remain effective. Dehumidifying capabilities, often included in air conditioning units, prevent the growth of mould and mildew which also contributes to user comfort. Selecting a model with easily accessible air filters simplifies cleaning, meaning a fresher environment and potentially longer unit lifespan.

Additional Features and Technologies

With technological advancements, modern wall-mounted air conditioners not only regulate temperature but also bring a suite of additional functionalities to enhance indoor air quality and interactivity.

Air Purification and Dehumidifying

The latest air conditioners are more than simple cooling devices; they're integrated with air purification systems to filter out pollutants and allergens, creating a healthier living environment. Brands have incorporated advanced filtration methods, such as electrostatic or HEPA filters. Alongside purification, dehumidifying functions combat humidity levels, discouraging mould growth and ensuring a comfortable atmosphere within various spaces.

Smart and Connected Features

Seamless connectivity and user-friendly interfaces epitomise the state-of-the-art smart features of today's air conditioners. Many units now offer smartphone control, allowing users to adjust settings remotely. This convenience is complemented by compatibility with smart home ecosystems, tapping into voice commands and routine automations. The capability to adapt to real-time environmental changes distinguishes these units as particularly adept.

Energy-Saving and Environmental Aspects

Strides in energy efficiency are evident in the latest models. They're armed with inverter technology, which dynamically alters compressor speed and significantly reduces energy consumption. Look for the Energy Star rating as a benchmark for energy efficiency. Additionally, these devices are becoming increasingly environmentally friendly, with some utilising refrigerants that have a lesser impact on global warming potential.

Brand and Model Overview

Selecting the ideal wall-mounted air conditioning unit for your home involves navigating an array of reputable brands, innovative 2024 models, and the unique advantages of varying systems. Here, we dissect brand reputations, feature-packed models, and system types to watch for in the UK market.

Top Air Conditioner Brands in the UK

The UK market hosts several standout air conditioner brands acclaimed for their exceptional cooling solutions. Carrier is renowned for its high performance and reliability, while Lennox stands out with its energy-efficient lineup, boasting high SEER (Seasonal Energy Efficiency Ratio) ratings. Other notable names like Trane, Amana, and American Standard offer competitive options that balance affordability with cooling prowess. Daikin injects a touch of elegance with its Stylish range, merging aesthetics with functionality.

  • Carrier: High performing units, a solid choice for robust cooling needs.

  • Lennox: Known for energy efficiency with high SEER ratings.

  • Trane: Offers a balance between cost and quality.

  • Amana: A dependable brand with a focus on durability.

  • American Standard: Affordable with commendable performance.

  • Daikin Stylish: A fusion of design and technology for modern homes.

  • Worcester Bosch: a behemoth of the heating and cooling industry, providing excellent ac units.

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2024 Model Highlights and Features

In 2024, wall-mounted air conditioners are not just about cooling; they boast a 4-in-1 functionality, melding cooling, heating, dehumidifying, and air purifying into one compact unit.

For example, the Lennox MPB Mini-Split unit garners attention with a SEER rating up to 24.5 and an impressively low noise level. Features like smart connectivity, programmable schedules, and eco-friendly refrigerants are becoming standard. Customers frequently highlight portable options too, marked by their convenience and ease of installation, often with handles for simple repositioning.

The Daikin Sensira air conditioner stands out for its energy efficiency, quiet operation, and flexible heating and cooling options, making it ideal for both residential and commercial use​​.

The Worcester Bosch Climate 3000i air conditioner is praised for its efficient heating and cooling, advanced air purification features, and user-friendly design, catering well to both home and business settings​​.

Key Features:

  • High SEER ratings – for greater energy efficiency

  • Low sound levels – quiet operation for minimal disruption

  • 4-in-1 functionality – a versatile approach to air management

  • Smart features – offering control and connectivity for modern living

Comparing Single vs Multi-Split Systems

When considering wall-mounted air conditioners in the UK, two systems prevail: single-split and multi-split. Single-split systems are cost-effective and best suited to individual rooms. In contrast, multi-split systems connect multiple indoor units to a single outdoor unit, ideal for larger homes or spaces wanting to maintain aesthetic consistency. Each system has its place depending on your cooling needs and space constraints.

  • Single-split systems: More affordable, perfect for single rooms.

  • Multi-split systems: Greater flexibility and coverage for multiple rooms.

Practical Tips for Buyers

When selecting a wall-mounted air conditioner, buyers should focus on their specific needs and the features that will best serve their living space. Energy efficiency and cooling effectiveness must be weighed against cost to ensure the best value and performance.

Evaluating Room Size and Cooling Needs

To determine the ideal air conditioning unit, one must first assess the square metre footage of the area that requires cooling. It's crucial to consider both the size of the room and the heat load from electronics, number of occupants, and sun exposure. Cooling capacity is measured in BTU (British Thermal Units), and a higher BTU correlates with the ability to cool larger spaces. As a guideline:

  • Rooms up to 20 square metres may require a unit with approximately 5,000-7,000 BTU.

  • Spaces between 20 and 40 square metres tend to need 7,000-12,000 BTU.

  • Rooms larger than 40 square metres could require over 12,000 BTU.

Remember, an oversized air conditioner can lead to inefficiency, while an undersized one may not cool effectively.

Making the Most of Your Air Conditioner

Once the proper unit is installed, maximising its efficiency is key. Buyers should look for models with a high Seasonal Energy Efficiency Ratio (SEER), as a higher SEER rating indicates superior energy efficiency, reducing electricity costs over time. Features such as variable speed fans can significantly enhance energy efficiency by adjusting the fan speed to maintain the desired temperature, preventing overcooling and energy waste.

Utilising the timer function, air conditioners can be programmed to switch on or off at set times — cooling the room before it's occupied and saving energy when it's empty. During cooler periods, turning the unit off or adjusting the thermostat can lead to substantial energy savings. Maintaining the unit — regularly cleaning the filters — ensures optimal cooling performance and longevity.

When considering which model to purchase, it is advisable to obtain multiple quotes from reputable suppliers to find the best deal for an air conditioner that meets the specific cooling needs and energy efficiency requirements of your household.

Remember: Air Con Units can Heat as Well as Cool

Many are unaware that air conditioners like the Daikin Sensira are not just for cooling. They're quite capable of heating spaces efficiently during colder months.

Conclusion - AC installation with iHeat

When selecting the Daikin Sensira or Worcester Bosch Climate 3000i Air Con for your home, you are choosing a unit renowned for its efficiency and performance. iHeat's installation service enhances the appeal of this air conditioning system, offering a streamlined process tailored to the needs of residential properties.

Daikin Sensira's features at a glance:

  • Seasonal Efficiency: Achieves A to A++ ratings in cooling and A to A+ in heating, indicating superior energy performance.

  • User Control: Optional Onecta app compatibility allows for remote operation.

  • Quiet Operation: Noise levels can be as low as 20 dBA, ensuring minimal disruption.

iHeat - fast, easy and safe

  • Answer a few simple questions about your home (don’t worry, it only takes 60 seconds).

  • Choose from our range of ac units to cool and heat your home.

  • Pop the kettle on, we’ll take it from here. Our expert engineers will install your new ac unit. Thanks to our fully inclusive after care, you won't have to worry about a thing.

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Frequently Asked Questions

What is the best brand of through the wall air conditioner?

When assessing the best wall-mounted air conditioner brands, Carrier often emerges as top-tier, renowned for performance. Other reputable brands include Lennox, known for high SEER ratings and energy efficiency, while brands like Trane and American Standard provide more budget-friendly options without compromising quality.

Are wall-mounted air conditioners good?

Wall-mounted air conditioners are an excellent choice for those seeking efficient cooling without taking up floor space. Their popularity stems from their ability to provide targeted cooling in specific areas, making them both effective and practical for various room sizes.

What is the disadvantage of wall-mounted air conditioner?

The primary disadvantage of wall-mounted air conditioners is the requirement for professional installation, which may involve structural alterations to the property. They're also fixed in position, limiting flexibility compared to portable units, and may not be suitable for every type of building structure.

Does a wall AC use a lot of electricity?

Wall AC units can consume a significant amount of electricity, especially if they are outdated or inefficient. Modern units often come with energy-saving features and better SEER ratings, reducing their electricity usage. Consumers should look for models with high energy efficiency to minimise running costs.

How much does an air conditioner cost to run per hour UK?

The cost to run an air conditioner in the UK per hour greatly varies depending on factors such as the unit's efficiency, electricity tariff, and the ambient temperature. On average, a wall-mounted AC might cost between 10 to 30 pence per hour, but this can be more for less efficient units.

Can you leave a wall AC on all day?

One can leave a wall AC on all day, but for efficiency and to reduce wear and tear, it's advisable to use a programmable thermostat to regulate the temperature. It also helps in lowering electricity bills and extending the lifespan of the unit by avoiding continuous operation.

Do wall AC units need to be covered in winter?

In the UK's colder months, it is often recommended to cover outdoor components of wall AC units to protect against debris and winter weather. However, indoor units should not be covered to ensure adequate air circulation and prevent condensation build-up inside the unit.

Stephen Day profile photo
Article by
Stephen Day | Co-founder
Gas Safe registered and FGAS certified engineer with over 20 years experience in the heating and cooling industry.