This air conditioning unit is ideal if you are looking for a compact yet powerful air conditioning unit. The Prem-I-Air PKY12 has a stylish design that will sit pretty wherever it is placed and comes with a rotary compressor for maximum energy efficiency without compromising cooling.
Features & Benefits
- Self Evaporating, with excess drip tray and tray full indicator alarm
- Cools & Dehumidifiers
- Quiet 3 Fan Speed Settings
- LED display panel with electronic controls
- Thermostatic control to maintain fixed temperature
- Indicator for condensate full tray
- 24 hour timer allows you set unit to operate within a specified time frame
- Manually adjustable louvers
- Internal oscillating louvers for evenly distributed air flow
- Energy Rating B helps you save on energy bills
- Cable management at the back for easy stowing away
- Castors for easy movement
- Side air intake
All of these products are highly efficient, economical to run, elegantly designed and quiet in use. The single unit portables require no installation, you simply plug them in and you are ready to go. They offer the flexibility to be moved from room to room, so that you can cool where you want, when you want.. They are also practical when a fixed unit is not possible to install.
We advise our customers if they need to buy a portable air conditioner, to buy the maximum BTU rated machine available, and to buy the highest quality they can afford for superior cooling performance.
An Introduction to Air Conditioning
Air conditioning units are designed to cool your room to your preferred temperature. As well as controlling the temperature, many units also allow you to control the humidity and some have special filters to remove small particles, such as allergens, from the air, so are of particular benefit for those with allergies or asthma.
Portable air conditioners are the easiest and quickest way to improve your comfort in the summer months, having all the advantages of fixed systems but ready to use immediately. You just plug the unit in and set your perfect temperature. They are ideal when different rooms need to be cooled at different times as the units can be moved from room to room. They work by simply taking hot damp air from a room and expelling it to the outside while the air inside the room is chilled and re-circulated.
Portable Air Conditioners are ideal for someone who:
These are the easiest of units for immediate use. The appliance is simply plugged in, and the flexible hose, which is used to expel the hot and damp air, must be vented through an outside wall or window. A flattened adaptor at the end of the hose can be fitted through a partially opened window or door, or the hose can be fed through a hole, using the socket provided with the unit. You can have either air cooled units or air and water cooled units. Air plus water-cooled units give you a larger cooling power but you do need regular refilling of the water tank and the unit will require descaling in hard water areas.
Split System - Portable Air Conditioners:
For larger or hotter rooms split portable air conditioners are normally required. This consists of 2 units, a controlling unit inside the room and a condenser unit outside connected by refrigerant lines, which can be detached from the outside unit for installation. The indoor unit draws in the hot air to the outside condenser unit, and expels cold air into the room. The external condenser box can be placed either on the ground outside or hooked by straps over the edge of a window frame. S plit systems are usually quieter, as the noisier part is outside.
How it works
Air conditioners come in various sizes, cooling capacities and prices: portable air conditioners, split portables, window air conditioners, condensing units on the roofs, and fully integrated air conditioning systems, but they all work on the same principle. An air conditioner removes hot (and damp) air from indoors and transfers it outdoors via a hose. The tube, similar to a tumble dryer hose (around 1m long), has to be vented to the outside ideally through a small venting hole made in the wall or window. For a quick fix (temporary solution) you can, with the use of a flattened oval adaptor supplied, put the hose out of a partially opened window or door. In the more powerful split system mobile type, the heat, along with excess humidity is discharged by the external (condenser) unit.
The hot air from the room is drawn by a fan into the air conditioner, and passes over an evaporator coil, which contains refrigerant. The refrigerant is pushed around the air conditioner by the compressor. The refrigerant is very cold and absorbs the excess heat from the air. This cooled air is pushed out through the front air vents back into the room. The absorbed heat in the refrigerant is transferred to a condensing (hot) coil, which causes the refrigerant to release its heat. The heat is then discharged from the room, either to a second section (split units) or directly into the outside air (mono-block unit). The cycle then starts again, to keep the room at the required temperature. Some air conditioners automatically remove the excess moisture from the air and evaporate it away with the excess heat. This also improved the overall level of comfort, reducing that sticky high humidity. With this type, there is no drip tray or tank to empty, so the only maintenance required is to clean the filter to maintain the air conditioner's efficiency. Other units utilise the moisture that has condensed and uses it to boost the cooling efficiency, in a similar way to water cooling, this is called condensate cooling.What is a BTU?
BTU stands for the British Thermal Unit. Is the amount of heat required to raise the temperature of 0.45g of water by 0.56 degrees Celsius. So in heating terms, 1BTU = 1055 joules. To give you an idea of what this means, t he typical heat gain added to a room by a person at rest is about 230 BTUs per hour. So, a 10,000 BTU window air conditioner is capable of removing 10,000 BTUs of heat per hour. The higher the BTU, the easier and faster it is to cool a room.
What does EER stand for?
Energy Efficiency Rating or EER is measured as its BTU rating over its wattage. For example, if a 10,000-BTU air conditioner consumes 1,200 watts, its EER is 8.3 (10,000 BTU/1,200 watts). A higher EER rating is preferable, but is normally found in more expensive units. So the more energy efficient the unit, the cheaper the long term running costs, so they can work out better in the long term.
First you will need to work out your rough BTU requirement for your room size. Room sizes for the units are calculated on the basis that 40 watts is needed to cool 1 cubic metre (4Btu/h per cubic foot). Here’s how:
For example, if working in feet and BTU’s:
Room size of 12 x 15 x 10 feet =1800 cubic feet
Multiply by 4 = 7200
Therefore an air conditioner with 7200 btu/h or greater cooling capacity would be required.
Once you have done this you need to consider the following:
How many people are in the room. Each person will generate about 2000 BTU worth of heat. You will need to add about 600 BTU’s for each additional person using the room over 2 people.
All these factors will add more heat to the room, so a more powerful unit will be needed. If you buy a unit that is not powerful enough for your room, then it will not be able to cope on the hot days when you really need it. It will improve the air, but it will be acting as a comfort cooler, or spot cooler, taking heat out of the room but not actually reducing temperatures. To cool the room properly you may have to consider a second unit.
As a rough guideline,
Maintenance: Clean it periodically. With any model, clean the filter as needed. Where possible, hose off the back of the unit if debris has clogged cooling coils.
Venting/exhaust: The truly portable or monoblock air conditioner has to get rid of the condensation created by cooling humid air and also has to vent out the heat. Some units have a drip tray or tank/bucket that the condensate runs in to and this has to be emptied fairly regularly, but many vent out the hot air and evaporate the condensed water through an exhaust hose. Alternatively, other units have a drainpipe, which can be drained through a nearby window or hole in the wall. If you don’t want to be emptying a bucket, check the specifications of the air conditioner unit that you are interested in before purchasing.
Running Costs: Most of the single units input power is less than 1000w (1kw) per hour. Therefore the average cost to run on full power would be about 5p/6p per hour. Split systems have inputs of around 1.3kW/hr, so would cost about 8p per hour to run on full power.
Location. Distance from vent location: Often we are asked if the hose can be extended to reach to a window or opening that is further from the unit than the hose will reach to. We would not recommend that you extend the hose provided in the single air conditioners, but if you have no other option it is important to vent into a much larger diameter vent pipe. If the air conditioners fan cannot expel heat fast enough, i.e. there is a back pressure or constriction to the air flow the unit will not work and could even be damaged.
Wherever possible avoid extending the hose length, so site the mobile next to an outside wall or window.
If you have difficulty in venting the hose to the outside you may find that you can vent into a room where the temperature doesn’t matter, for example, from an office to a warehouse.
On split systems the refrigerant lines cannot be extended.
Cooling ability: There are limits to how cold the room temperature can be made. When operating in a suitably sized room, most air conditioners will cool to around 21c. Mobile air conditioners are designed for peoples comfort. The ideal summer temperature for most people is around 21- 24c.
Troubleshooting: If the unit stops working: