Which air conditioner?


Air Comfort Centre Ltd stock a wide variety of air conditioners including portable air conditioners, window or through the wall air conditioners, wall mounted splits and cassette splits, brands include Sanyo, LG, Fujitsu and Prem-I-Air for portable air conditioners.

Which size of air conditioner to pick depends on the environment you need to cool. For instance, an office typically has higher heat gains than a lounge because there will be more electrical equipment and people occupying the room which give off heat.

A room with a large south facing window is going to become hotter on a sunny day than a room with a north facing window and will therefore demand a more powerful air conditioner.

In order to find out which size air conditioner you need you can use our ‘Cooling Calculator’ on our website, just enter details such as room size, number, size and aspect of windows, how many people and monitors will normally be present and the total Wattage of lighting in the room and it will calculate the minimum cooling required in both btu’s (British thermal units) and in kW.

Once you have determined the size of air conditioner, you need to choose the style of air conditioner that would suit your application best. The paragraphs below outline the advantages and disadvantages of each type of air conditioner we offer and gives an indication of what type of situation they are suitable for:

Wall-mounted split and cassette split air conditioners


Powerful outputs to cool medium to large sized areas
Very quiet operation
Lots of features and functions
Attractive and unobtrusive designs

Good air distribution

Provide both cooling and heating


Needs to be professionally installed
More expensive than portable or window units
Has separate internal and external units that must be joined which requires drilling and permanent fixing with electrical isolators.

Suitable for:

Usually installed into offices, restaurants or shops, wall mounted units can also be used in lounges, bedrooms and other rooms that require quiet permanent cooling. Areas bigger than 64m2 can be accommodated with multiple units. The cassette unit is the best to use where there is a large ceiling area with a void above as will give 4 way air distribution.

Portable air conditioners


Relatively cheap to buy
No installation required – simply turn on and vent exhaust hose through a window
Great temporary cooling solution that can be stored away when not in use
Ideal for spot cooling a single area
Portable – can be used in more than one area


More noisy than split air conditioner
Not suitable for larger areas
Need to leave a window or door open to vent exhaust hose

Suitable for:

These are the ideal solution for domestic situations during the summer months, most units can also provide heat so you could think about installing more permanently in a conservatory

(you can vent the hose out of the wall through a pipe) Great for economic cooling of small rooms up to 38m2 or spot cooling an area, for instance a desk, in a larger space.

Through-the-wall / Window air conditioners


Relatively cheap to buy
Can be installed by a competent DIY’er or a builder
Prem-I-Air SWPREM range is very attractive for conservatories or offices.

One self-contained, integral unit
No condensation tank to empty
No need to leave window or door open for venting


More noisy than a split system
Outputs up to 11,000btu. Not suitable for large areas unless you buy multiple units
Must be installed on the inside of an external wall

Suitable for:

This type of unit is ideal for conservatories as it can be installed through the top of the brickwork below the windows on a dwarf wall. It is also suited to installation through a sash window – simply sit it on brackets and close the window on to it. Other popular installations include offices, porta-cabins, hard standing caravans and small offices.

Please see our author bio for contact details if you need any further advice, we can supply air conditioning to all of the UK but can only install and service in the Sussex area.

Expert for all matters air treatment, we are www.aircomfortcentre.com which is the UK’s most successful online air treatment businesss, we sell air conditioners, fans, humidifiers, heaters, dehumidifiers, evaporative coolers, air purifiers and patio heaters to homes and businesses in the UK.

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