Air Conditioning Buying Guide

Types of Air Conditioners we supply

There are two basic types of air conditioners which meet nearly all requirements, and they are portable or mobile air conditioners, and split air conditioners.

Portable/ Mobile Air Conditioning

Portable or mobile air conditioners are best for home or small office use, as they just plug into the mains socket. They are mobile so can be moved easily from one place to another, and are usually sitting on castors. You would need to ensure the hot air is extracted, by attaching the hose provided out of a door, window, or through a small hole in the wall. In the short term, however, you can direct the hose through the window or door. These air conditioners do not require an outdoor unit or professional installation as they just plug in and are therefore an attractive option for their ease of use and the flexibility of moving them from room to room. You can also just unplug it and place the unit in storage when you no longer need it.

It is easy to control the temperature indoors with a portable air conditioner, and we have a great selection of portable air conditioners at amazing sale prices. Ideal for applications where you need to keep certain areas of your home, office or factory cool, whilst also providing a dehumidifying function. Use a portable air conditioner to keep one room at a time cool, either your lounge or bedroom, computer room or loft, wherever you may be sitting. These units also offer good energy efficiency and can cost as little as 9p per hour to run, a small price to pay for a good night’s sleep!

How to Choose the Correct Air Conditioner for you?

The air conditioner you require is determined by the size of the room you require it in. Air conditioning power is determined by BTU of the unit. Below we have created a table based on room sizes on what BTU powered air conditioners we recommend. If you would like a more accurate reading according to the exact size of your room, please use our Air Conditioning calculator.


Please see below our guide for choosing the product best suited to your room size.

Product Code Description BTU Room Size
ARTICA  Ecoair Portable Air Conditioner 8000Btu Wi-Fi ARTICA MK2 8,000 BTU Up to 21m²
GELO  EcoAir GELO Wi-Fi Portable Air Conditioning Low CO2 Low Energy Class A 9000 BTU Cooling 9,000 BTU Up to 16m²
00151401006 / AN98  De'Longhi Pinguino PAC AN98 ECO Real Feel Portable Air Conditioning Unit 10,700 BTU Up to 40m²
0151401003 / AN112 De'Longhi Pinguino PAC AN112 10,500 BTU Up to 16m²
0151454003 / EX100 De'Longi Pinguino PAC EX100 10,000 BTU Up to 16m²
MC8000 MeacoCool MC (cooling only) 8,000 BTU Up to 25m²
MC9000 MeacoCool MC (cooling only) 9,000 BTU Up to 26m²
MC10000 MeacoCool MC (cooling and heating) 10,000 BTU Up to 28m²
KYR-25CO KYR-25CO/X1c 9,000 BTU Up to 30m²
KYR-35GW KYR-35GW/X1c 12,5000 BTU Up to 40m²
P14HCR2 KoolBreeze Climateasy 14000 BTU 14R2 Portable Air Conditioning Unit 14,000 BTU Up to 25m²
SC14 Fral SC14 (optional 6m hose) 14,000 BTU Up to 40m²
P16HCR2 KoolBreeze Climateasy 16000 BTU 16R2 Portable Air Conditioning Unit 16,000 BTU Up to 42m²
P18HCR2 KoolBreeze Climateasy 18000 BTU 18R2 Portable Air Conditioning Unit 18,000 BTU Up to 42m²
KYR-45GW KYR-45GW/X1c 14,000 BTU Up to 46m²

Split Air Conditioning Systems

The split air conditioning systems consist of an indoor, remote controlled unit, and an outdoor unit. The indoor unit is fixed to the wall and is connected to the outdoor unit by means of a pipe and the unit cannot be easily moved.

The outdoor unit or compressor is either installed on the ground outside, or is fixed to the wall using wall brackets. For this reason split air conditioners are often called fixed air conditioners and they are not mobile.


SKU Description BTU Room Size
KFR-23IW KFR-23IW Split System Air Conditioning Unit (KFR23 Wall Split System) - 9,000 BTU 9,000 BTU Max room size of 13-25m² 
(or max conservatory size of 10m²)
ACCKFR26YW KFR-26YW/X1c Black Gloss Air Conditioning Unit (Wall Split System) 9,000 BTU Max room size of 13-25m² 
(or max conservatory size of 10m²)
KFR-33IW KFR-33IW/X1c 12,000 BTU Wall Split Air Conditioning Unit 12,000 BTU Max room size of 16-27m² 
(or max conservatory size of 13m²)
ACCKFR36YW KFR-36YW/X1C Y Series Inverter Air Conditioning Unit 12,000 BTU Max room size of 16-27m² 
(or max conservatory size of 13m²)
KFR-53IW KFR-53IW 18000 BTU Air Conditioning Unit 18000 BTU Max room size of 25-42m² 
(or max conservatory size of 22m²)
KFR-56 KFR-56YW/X1C 18,000 BTU Y Series Black Gloss Inverter Wall Split Air Conditioning Unit 18000 BTU Max room size of 25-42m² 
(or max conservatory size of 22m²)
KFR-63IW KFR-63IW/X1c 24,000 BTU Wall Split Air Conditioning Unit 24,000 BTU Max room size of 34-60m² 
(or max conservatory size of 30m²)
ACCKFR66YW KFR-66YW/X1C 24,000 BTU Y Series Black Gloss Inverter Wall Split Air Conditioning Unit 24,000 BTU Max room size of 34-60m² 
(or max conservatory size of 30m²)


How do Air Conditioners work?

Air conditioners work in a similar way to refrigerators and freezers, but whilst refrigerators cool small areas inside the unit, air conditioners work to cool large areas like rooms, offices, factories, etc.

Air conditioners move warm air from inside your home or office to outside. Most Portable Air Conditioners are mobile units which are often on wheels and can be moved to any room. They usually come with an exhaust hose which blows hot air extracted from inside the room, to outside the room. The exhaust hose would need to be placed outside the room, through a window, into an adjacent room or hallway, or through a hole in the wall. The length of the exhaust hose is often around 1 metre -1.5 metres, and this should not be extended, as it would cause heat to back up inside the air conditioner.

Explained very basically, an air conditioner has three parts, a compressor, a condenser and an evaporator. The compressor draws hot air from the room into the unit, and passes the air through the condenser and over the evaporator which contains a very low pressure and very cold refrigerant. This then cools the air and connected to the evaporator is a fan that circulates the air around the room. The heat is expelled through either the exhaust hose or through the external unit of a split system and the cool air is blown into the room.

This process continues until the room reaches the temperature the thermostat is set to, and then the unit switches off. When the temperature in the room rises again, the thermostat senses this and switches the air conditioner on again until the room cools again to the required temperature.

Advantages of Air Conditioning?

Most air conditioners contain thermostats so you can set the room’s temperature as desired. The unit will switch itself on or off depending on whether the temperature rises or falls in the room.

Whilst cooling your room, all air conditioners also act as dehumidifiers, and some come with internal water tanks so they can be used as just dehumidifiers without the cooling function.

Portable air conditioners are very easy to install with all necessary fittings included so you can run the exhaust pipe through a door, window or wall. They run off a standard 3-pin plug with a standard 13amp fuse.
Some models feature temperature read-outs and adjustable timers to switch the units on or off, whilst others combine standard fans and air purifiers within the units.

Do portable air conditioners need to be vented outside? 

Yes. All portable air conditioners come with an exhaust hose to remove excess heat from the room your are cooling. Portable Air Conditioners remove heat from the room your are cooling, this needs to be vented elsewhere. We also supply a range of window kits that make it easy to remove the hot air from your room and vent straight outside for more efficient cooling performance.


For those unfamiliar with the term BTU it is a unit of measurement of the power used by air conditioning units in the UK, and stands for British Thermal Units, which is a measure of the amount of heat needed to raise the of temperature of one pound of liquid water by one degree from 60° to 61° Fahrenheit ,whilst maintaining a constant pressure.

The number of BTUs required from an air conditioner should take into account two key factors, the size of the room and the amount of heat being produced by people and machines within the room in question.

These are both major elements in working out the correct cooling capacity needed from your air conditioner; however another thing to consider is window size and the direction in which the window faces. The light received into a room is a major factor in the temperature the room maintains.

As a general rule it is advisable to purchase an air conditioner with a minimum output 7000 BTUs this would be the minimum BTUs required to cool a small room (18sq/m) on a hot day. Medium rooms (24sq/m) need around 10,000 BTUs and larger rooms and office spaces (36sq/m) require at least 15000 BTUs.

Various factors must be taken into account when fitting air conditioning units, including the location of the units.


Office Air Conditioning

Offices are usually larger than rooms in an average home, and air conditioners would probably be in use more frequently than in the average home. It is often worth considering a more expensive, higher quality unit. These units usually have more features and can provide a wider range of choice, eg heating, cooling, fan or dehumidify. A reasonably quiet unit will be probably be required within an office space and many quality units can be set on a low decibel limit between 25 and 40 decibels.


Home Air conditioning

Around the home the air conditioner you require can vary in price. There is a large selection of units that can be employed, depending on budget and requirement. It is more costly to employ a totally concealed unit but this is still possible with a ducted system or cassette air conditioning unit.

Bedroom Air conditioning once again requires different factors to be taken into account. Possibly the most important factor here is that they need to be quiet so as not to affect the rooms ambience. Many better quality units will come with a “whisper quiet” facility, when the noise levels are not raised above 25 decibels.


Conservatory Air Conditioning

Conservatory Air Conditioners are very popular and one of the most commonly employed because of the heat retention in conservatories in the hotter months, and heat loss experienced in the winter.

The summer months can see the temperature raised substantially in a conservatory, which can in affect become like a sauna, and as well as the cooling capacity of the air conditioner, it is also important to take into consideration dehumidifying and heating for the winter months.

If you are thinking about air conditioning for the conservatory it all depends where you can site it. A low wall mounted unit can be fitted on a dwarf wall of 600mm. The low wall mounted units we supply comprise two elements - an internal and an external unit.

The internal unit is fitted onto the Dwarf Wall in the conservatory whilst the external unit is situated outside the building.