The best air conditioners without outdoor unit in the UK 2022

Are you tired of those bulky air conditioners that come with a visible element on the outside? It doesn't match the aesthetics of your home at all, does it? The use of an air conditioner without an outdoor unit is a must. Powerful, efficient and practical, this unit will match your home décor while providing the comfort you need. Follow our guide to the best air conditioners without outdoor units if you're looking for one.

Olimpia Splendid Unico Air Inverter 8SF 01601 1
9/10

Editor's Choice

Olimpia Splendid Unico Air Inverter 8SF 01601

The best air conditioner without an outdoor unit in 2021

This ready-to-install air conditioner has a cooling capacity of 8000 BTUs. No drilling of holes is required since it has no outdoor unit.

1 144 £ on Cdiscount

Slimmer and quieter, this air conditioner without an outdoor unit is the perfect alternative for any air conditioning problem. It is equipped with Inverter technology, which allows it to be efficient. With its 1800 W power, it is able to efficiently cool rooms of up to 20 m². A device with multiple functions, the Olimpia Splendid Unico Air Inverter 8SF 01601 can serve as both a heater and an air cooler.

It has the Silent system that reduces noise to a minimum, especially since it emits a sound volume of 27 dB. You will not be disturbed during your resting hours. You also have the possibility to control it remotely with the Wi-Fi connection. With a beautiful and ultra-thin design, the Olimpia Splendid Unico Air Inverter 8SF 01601 air conditioner will therefore be perfect to help you during hot weather.

Olimpia Splendid Unico Easy SF 01056 2
8/10

Best cheap

Olimpia Splendid Unico Easy SF 01056

The best entry-level air conditioner without an outdoor unit

The Olimpia Splendid Unico Easy SF 01056 is a surprisingly elegant and discreet air conditioner. It fits perfectly into any decorating style in addition to all its ultra-efficient features.

1 015 £ on Cdiscount

Equipped with a dehumidification function, a room thermostat, and an electronic timer on its LCD screen located on the top, the Olimpia Splendid Unico Easy SF 01056 is certainly an almost complete and efficient device despite its small price. This model is ideal for a room of 20 m². It also has the Autofan function which allows it to adapt the ventilation speed of the unit according to the difference between the room temperature and the one programmed on the thermostat.

The air conditioner without an outdoor unit is equipped with condensation recycling. This technology allows you to avoid the installation of a condensate drain. In fact, the condensate is eliminated by evaporation thanks to the heat supplied by the exchanger. This technique increases the performance and efficiency of the unit. Its noise level is 43 dB.

Olimpia Splendid Unico Air Inverter 10 HP 3
9/10

Best high end

Olimpia Splendid Unico Air Inverter 10 HP

The best high-end air conditioner without an outdoor unit

The Unico Air Inverter 10 HP is a compact and quiet reversible air conditioner without outdoor unit. Capable of heating the air in winter and cooling it in summer, it is a multifunctional unit that can compete with wall-mounted single-split units.

1 445 £ on Darty

The Unico AIR adapts to any interior thanks to its ultra-thin and silent "made in Italy" design. Without an outdoor unit, it offers you both comfort and ease of installation, which is a great asset for its integration into your interior decor. It is also easy to control. Thanks to the Olimpia Splendid Unico application, you can operate it via Bluetooth, WiFi or 3G / 4G connection, no matter where you are. With a power of 2300 W, it cools a room of 25 m² without a hitch.

Its multi-filtration system combines all the advantages of an electrostatic filter and an active carbon filter. It is therefore very ecological, because the latter eliminates bad odors and renders inactive gases that are harmful to health. With all these features, the Unico Air Inverter 10 HP air conditioner from Olimpia Splendid will accompany you all year long.

Olimpia Splendid 01494 Unico Smart 12 HP 4
8/10

Excellent choice

Olimpia Splendid 01494 Unico Smart 12 HP

A very good alternative

The Olimpia Splendid 01494 Unico Smart 12 HP is a stationary air conditioner with dual temperature management capabilities. It provides heat in the winter and cools the air in your apartment, bedroom or office when it is hot.

1 036 £ on Amazon
Buying guide • April 2022

Best air conditioner without outdoor unit

Any specific needs?

The best air conditioner without an outdoor unit in 2021

The best entry-level air conditioner without an outdoor unit

The best high-end air conditioner without an outdoor unit

A very good alternative

Your guide : Samuel

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Comparison table of the best air conditioners without outdoor unit

The best Inexpensive Top of the line Excellent
Olimpia Splendid Unico Air Inverter 8SF 01601 5
9/10
Olimpia Splendid Unico Easy SF 01056 6
8/10
Olimpia Splendid Unico Air Inverter 10 HP 7
9/10
Olimpia Splendid 01494 Unico Smart 12 HP 8
8/10
OUR SELECTION
Olimpia Splendid Unico Air Inverter 8SF 01601
Olimpia Splendid Unico Easy SF 01056
Olimpia Splendid Unico Air Inverter 10 HP
Olimpia Splendid 01494 Unico Smart 12 HP
This ready-to-install air conditioner has a cooling capacity of 8000 BTUs. No drilling of holes is required since it has no outdoor unit.
The Olimpia Splendid Unico Easy SF 01056 is a surprisingly elegant and discreet air conditioner. It fits perfectly into any decorating style in addition to all its ultra-efficient features.
The Unico Air Inverter 10 HP is a compact and quiet reversible air conditioner without outdoor unit. Capable of heating the air in winter and cooling it in summer, it is a multifunctional unit that can compete with wall-mounted single-split units.
The Olimpia Splendid 01494 Unico Smart 12 HP is a stationary air conditioner with dual temperature management capabilities. It provides heat in the winter and cools the air in your apartment, bedroom or office when it is hot.
Weight
37 kg
39 kg
43 kg
40 kg
Dimensions
97.8 x 16.4 x 49.1 cm
27.6 x 69.3 x 66.6 cm
97.8 x 16.4 x 49.1 cm
90.2 x 22.9 x 51.6 cm
Power
1800 W
2100 W
2300 to 2500 W
2500 to 2700 W
Noise level
27 dB
43 dB
27 dB
33 dB
Efficiency zone
20 m²
20 m²
25 m²
25/30 m²

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Buying guide - air conditioner without outdoor unit

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How to choose your air conditioner without outdoor unit

Before you choose the first air conditioning system you see, there are a number of criteria you should consider. So here are the parameters to consider if you are thinking of buying an air conditioner without an outdoor unit.

#1 - The size of your room and system

Probably the most important factor when choosing your air conditioner is the size of your room and the size of the new air conditioning unit. If you choose an air conditioner that is too small or too large, it will have trouble doing its job. You're wasting energy, as your system will constantly turn on and off trying to regulate the temperature. When choosing, therefore, first determine the size of your room so you can choose the right air conditioner.

#2 - The speed setting

The fan speed of your air conditioning system should be adjustable so you can control the amount of clean air that will flow through the room. If a room is particularly hot and stuffy, a higher setting will allow you to cool it down much more quickly. You'll also be able to find a perfect, quieter setting for nighttime use if needed.

#3 - The features

Remote adjustable and smart thermostats can be added to the energy-saving settings, and your air conditioning system can be customized to your exact needs. You can opt for a remote thermostat, for example, which means you can adjust the temperature settings using a separate controller. You may even be able to save electricity and money on your bills by choosing the energy-saving option on some models.

#4 - The timer

This allows you to set the machine to turn on and off automatically; very useful if you want to come home to a cool house or save energy by turning the unit off once you've fallen asleep. Choose a model with a timer and a 24-hour setting. Some have only countdowns or timers that must be reset daily.

#5 - The sleep or night mode

This reduces the noise emitted by running the compressor and fan more slowly. Often, the target temperature will automatically increase during the night so you don't wake up to a bitter cold. No air conditioner will be quiet, even in standby mode. You're better off pre-cooling your room before you go to bed, rather than trying to sleep with an air conditioner on.

How does an air conditioner without an outdoor unit work?

An air conditioner without an outdoor unit, as its name suggests, does not require an outdoor installation. Like a heat pump, it consists of a single element that includes the diffuser, the compressor and the expansion valve. This type of air conditioner absorbs heat from the outside, heats or cools it depending on the mode, and releases the treated air back into your home. The compressor is used to create heat in the winter while the expansion valve is used to create cold in the summer. To propel the hot or cold air, the air conditioner uses its diffuser.

The different types of air conditioners without outdoor unit

There are 3 types of air conditioners without outdoor unit which we will see below.

Wall-mounted air conditioner without outdoor unit

Everything needed to provide cooling is housed in a wall-mounted air conditioner without an outdoor unit. Two core holes are simply drilled through the exterior wall to allow the system to vent heat to the atmosphere, the circular louvered grilles are the only things that can be seen from outside the property.

In many cases, these louvers can even be dressed up to match the exterior color of the building, meaning the louvers are nearly invisible. Using a wall-mounted air conditioner without an outdoor unit saves floor space. Plus, this unit ensures excellent performance throughout the room.

Console air conditioner without outdoor unit

The console air conditioner without an outdoor unit is a smart way to add cooling to a limited number of rooms without having to open up walls to install ductwork, as you would with a central air system, or install and remove several windows each year. Alternatively, it can be floor standing or wall mounted. That's why they're also known as floor-mounted air conditioners.

It is one of the slimmest air conditioners on the market. It offers optimal performance with often a sleek and compact design to match your room. It is among the innovative models, preventing dust from accumulating on the unit and in the room. With less dirt and fewer blockages, users benefit from reduced cleaning and maintenance costs.

Monobloc air conditioner without outdoor unit

As the name suggests, a packaged air conditioning unit is made up ofa single piece that includes the refrigeration unit. Specifically, for an overview of monoblock units in general, they have the two sets of coils inside a single housing. They can be fixed or portable. There is no assembly required, and they are convenient and inexpensive.

These machines are usually designed to be placed inside the building or room to be cooled. However, their capacity is limited, which is why they are most often used as a backup air conditioning system or for small areas. The warm air is extracted from the room and evacuated to the outside via a pipe.

Air conditioner without outdoor unit or mobile air conditioner?

Air conditioner without outdoor unit

Many air conditioners without outdoor units are available on the market. These units do not have an outdoor unit, which makes installation easier. That is, the air conditioner can be installed from inside the room and has no impact on the buildings aesthetics. Most models offer year-round comfort and quiet operation. However, they are only effective in one room. Models without an outdoor unit do not have enough power to push fresh air throughout the home.

Mobile air conditioner

A mobile air conditioner is a self-contained system, perfect for cooling smaller spaces such as an office, single bedroom or garage, for example. Usually, a portable air conditioning unit will be placed on the floor and will be equipped with wheels, an ideal way to transport the unit to different areas of a home when needed. However, compared to other types of air conditioners, a mobile air conditioner tends to create a lot of noise. This is because all the components of the machine are in the same unit.

Verdict

Air conditioners are notorious for making a humming sound when they start up. While there is no noticeable difference between mobile and non-outdoor units, you can still find something you like in either model. It's important to note that some air conditioners without outdoor units can be installed and mounted on the wall while a mobile air conditioner cannot. In addition, most are very quiet compared to mobile air conditioners.

Why buy an air conditioner without an outdoor unit?

Easier installation process

Compared to traditional systems, a system without an outdoor unit requires much less installation work. Not only is no ductwork required, but you can choose where you want to place it. For a small home with only a few rooms, a skilled technician can complete the job in as little as a day.

Better décor

With an air conditioner without an outdoor unit, indoor installation is very flexible. You can hang it from your ceiling or hang it on your walls. Plus, many offer sleek, sophisticated casings that are aesthetically appealing. Plus, most systems without an outdoor unit are less obtrusive than other air conditioners that require you to either drill a hole in a wall or dedicate a window to your air conditioner.

Quiet operation

An air conditioner without an outdoor unit can operate just as quietly, which is significantly more comfortable than another unit. Its ductless condenser also has a much slimmer profile and allows you to easily position it in various locations.

Personalized comfort

If your family is arguing about the temperature in your home, a system without an outdoor unit can put an end to it. With units in different areas of the house, it allows for zone-based temperature control. Each family member can set the unit in the room they occupy to the desired temperature, keeping everyone happy and comfortable.

Save Space

One of the biggest advantages of an air conditioner without an outdoor unit is definitely its compact size. Window units are unsightly and awkward, and central air conditioning systems are bulky and complex. They take up space in the basement or attic and require extensive ductwork.

The best brands of air conditioners without outdoor unit

In our opinion, the best brands of air conditioners without outdoor unit in 2022 are :

Suntec Wellness
Klarstein
Olimpia Splendid
Tristar
Eurom

Suntec Wellness is a well-known brand in the field of production and sale of functional and modern home equipment. They are offered to you with the aim of making your daily life easier. In addition to its dehumidification and cleaning systems, the brand also offers you its range of high-performance air conditioners, including models without outdoor units.

Providing primarily entry-level and mid-range models, the Klarstein brand is a German company specializing in daily essential home appliances. Can we trust this brand? Yes! And if you're looking for air conditioners without an outdoor unit at the best price, it will meet your expectations.

Olimpia Splendid takes advantage of its 50 years of experience to offer you high-quality equipment. The brand is present in nearly 45 countries around the world, including France, Madrid or Shanghai. It integrates the best of current technologies in its models of air conditioners without outdoor unit while respecting the environment.

Tristar will only simplify your daily tasks thanks to its numerous household appliances. Since for it "quality should not be a luxury", the brand offers you air conditioners without outdoor unit, but also vacuum cleaners, beauty products, cooking appliances... at an unbeatable price.

If you are looking for a quality air conditioner without outdoor unit without wasting all your savings, Eurom can be your best option. The brand mainly relies on the robustness, reliability, and power of its products for air treatment.

What is the price for an air conditioner without outdoor unit

The diagram below will help you to get an idea of the typical prices for each price range (entry-level, mid-range and high-end).

However, more expensive does not necessarily mean better.

We therefore advise you to always consult our ranking before deciding, rather than blindly relying on price ranges.

Entry-level
800 £ to 1250 £
Mid-range
1250 £ to 1750 £
High-end
more than 1750 £
Price range diagram

Tips

Keep the remote control out of reach of your children

We all know that kids love remotes and we all know that they love to break them. Just keep the remote control for your air conditioning unit out of their reach.

Use the air conditioner without an outdoor unit considering its temperature limits

Each air conditioning unit has a threshold temperature at which it should be used. Using a split system outside the manufacturer's predicted temperature limits is prohibited. If you ignore it, sooner or later the air conditioner will be damaged or the compressor will break down completely.

Clean filters and internal block components regularly

The internal unit of the cooling or heating system blows a huge amount of air, as well as dust and dirt. These remain on the filters and other components. This in turn affects the performance of the unit. It is important to read the operating instructions carefully and perform regular diagnostics and cleaning of the equipment to ensure its longevity.

Use a professional for installation and repairs

One of the main reasons for air conditioner breakdowns is poor installation work. Users often install air conditioning systems without outdoor units themselves without any special know-how, equipment or tools. This makes the unit more likely to break down sooner, which accelerates the need for repair or complete replacement. That's why we always recommend using professionals when installing an air conditioner. This will not only extend its life, but also save you the cost of future repairs.

Procure an air conditioner that fits the size of the room

Trying tocool a large area with an air conditioner that isn't powerful enough results in the equipment using a lot of energy, which leads to more frequent maintenance and repairs. Be sure to consult a specialist about the size of your space.

FAQ

How long will an air conditioner without an outdoor unit last?

As with traditional systems, the lifespan of your outdoor unitless air conditioner will depend on many factors, including how intensively you use your system and whether you have met ongoing maintenance requirements. In most cases, your system should last 20 years, especially if you schedule regular maintenance.

What are the advantages of an air conditioner without an outdoor unit?

Outdoor unitless air conditioners offer a variety ofbenefits that can make them a better choice than a central air conditioning system. The main advantage of an outdoor unitless system is that you don't need ductwork to heat or cool your home. This not only makes installation easier, it also makes these systems more affordable.

Are air conditioners without an outdoor unit the same as mobile systems?

Outdoor unitless air conditioners and portable air conditioners are not at all the same. The best way to compare these two units is to consider every technical design aspect. Be sure to read our buying guide to help you better understand the difference between an air conditioner without an outdoor unit and a mobile air conditioner.

How is an air conditioner without an outdoor unit controlled?

Air conditioners without an outdoor unit have a built-in control panel to adjust settings and temperatures. Most models also include a remote control with each air handler, allowing you to adjust the unit's settings remotely.

Sources

Note: Below are some of the sources we have consulted in writing this article. Links to other sites are not continuously updated. It is therefore possible that a link may not be found. Please use a search engine to find the desired information.
  1. The 8 Best Air Conditioners of 2021, Thespruce.com
  2. The 3 Best Air Conditioners 2021, Nytimes.com
  3. Best Air Conditioners in 2021, Businessinsider.com
  4. 9 Best Smart Air Conditioners and Accessories 2021, Nymag.com
  5. Air Conditioners Without an Outdoor Unit: Are They Worth It?, D-air-conditioning.co.uk
  6. Residential Air Conditioning without an External Unit, Urbancooling.com
  7. Best air conditioning units to keep you cool this summer, Standard.co.uk
  8. The 7 Best Energy-Efficient Air Conditioners of 2021, Treehugger.com
  9. 7 Best Air Conditioners of 2021 According to HVAC Experts 8 Best WiFi Air Conditioners of 2021 - Smart Air Conditioner Reviews, Southernliving.com
  10. The best air conditioners without an outdoor unit, Bestproducts.com
  11. Air conditioners without an outdoor unit | Maison-Energy, maison-energy.com
  12. Air conditioners without an outdoor unit at the best price | Leroy ..., leroymerlin.fr
  13. Guide air conditioners without outdoor unit | ENGIE, particuliers.engie.fr
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  29. Air conditioner without outdoor unit daikin at mini price, manomano.fr
  30. Air conditioner without outdoor unit at mini price, manomano.fr
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Updates

March 2022 : Translation of this buying guide from our partner meilleurtest.fr

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Our selection
Olimpia Splendid Unico Air Inverter 8SF 01601 9
Olimpia Splendid Unico Air Inverter 8SF 01601
Olimpia Splendid Unico Easy SF 01056 10
Olimpia Splendid Unico Easy SF 01056
Olimpia Splendid Unico Air Inverter 10 HP 11
Olimpia Splendid Unico Air Inverter 10 HP
Olimpia Splendid 01494 Unico Smart 12 HP 12
Olimpia Splendid 01494 Unico Smart 12 HP

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