For smaller rooms up to 15m2 such as a bedroom, a study, a kitchen and a hall, an air-conditioner of the capacity 9000Btu/h could be used.

For larger rooms of 15-30m2 air-conditioners of the capacity 12000Btu/h could be used.

For precise counting of the necessary heat amount/cold amount in some room, there is a large number of programs which will precisely specify the capacity of air-conditioners. In order to do that, it is needed to go out to terrain and make a project.

While making choice of airconditioners` capacity, one should bear in mind the fact that they should choose according to the nominal capacity not the maximal one. For example, if the estimate showed that you need 8500Btu/h, it is wiser to choose an air-conditioner that is for one level of larger capacity, that is, the air-conditioner which gives 12000Btu/h, because of the fact that if the air-conditioner always works with the full capacity, its lifetime is considerably lowered and it spends larger amount of energy and in the extreme weather occasions it will not be of full usage.

Contact us:

• if your air-conditioner does not cool well
• if your air-conditioner does not cool at all but only a ventilator of inner unit (IU)
• if the outdoor unit leaks thus disturbing your neighbours or you
• if IU leaks
• if the cooling works but not the heating
• if a OU compressor does not work but OU ventilator does
• if a IU ventilator does not work
• if there is an unpleasant smell coming from air-conditioner
• if OU or IU is too much noisy ( buzzing, knocking etc. )
• if a pipeline gets icy in the cooling mode
• if your remote or wire controller does not work
• if your remote controller works but an air-conditioner does not receive a given command
• if your horizontal air router on IU is broken
• it is necessary if you notice that OU is not well-attached or it is largely inclined or if carriers have corroded
• it is necessary if you have power breakthrough on OU or IU

The small service of air-conditioners should be done once a year and, in some cases, twice which depends on how often air-conditioner is used and microclimate on that location. These are frequently smaller office spaces such as hair-dressers, boutiques, butchers, bakers, beauty care salons, mixed products shops, dental ordinations, pharmacists etc. The service is the frequently done in summer or autumn. It lasts for 30 to 45 minutes and it includes pressure and temperature checking in the system and cooling and heating mode. This is very important part of the service and when parameters are normal, cleaning of an air-conditioner may start. A great number of servicers do not do this test in appropriate way which leads to the possibility of bigger failure occurrence. If the parameters are not right, the type and measure of the air-conditioner irregularity or failure should be diagnosed. In that case, there is no point in cleaning and disinfection until the failure is removed. Then the air-conditioner is being filled with gas up to 100gr if that is necessary. If more gas is needed (which is determined during a pressure control ), then it is clear that it is all about irregularity of the air-conditioner that is, joints are not well connected or that there is a obstruction inside of the system or the valves are inoperative etc.

If a device properly works, the cleaning may start. First, cover mask of IU is removed and filters taken out, and then a IU mask or panel as well. They all should be washed and disinfected. Then IU combs is cleaned by a degreaser and a brush mechanically because the filth is gathering on the combs surface. All of that should be washed by which the flow of the IU condensate drain is being tested at the same time. Then the combs is disinfected by disinfectant. After that, IU is put together again. On the OU, if that is necessary, the combs is cleaned by a brush at the back side of a device By doing that, this operation is finished and all that is left is to give necessary instructions and suggestions considering the way of using and maintaining the device.

The big service of the air-conditioners should be done once a year in three to five years‟ period. In the previously mentioned smaller offices it should be done even more often. It lasts for 50 to 90 minutes depending on its size and approachability of OU and IU. Because of that, its price is determined on the spot within a certain range.This operation certainly includes a complete IU dismantling, in order to pull out axial ventilator ( turbine ) which is the main generator of mold that users of airconditioners usually do not see. The measured concentrations of viruses and bacteria that LG performed on its tests are unbelievable high and their spectrum is diverse. Among the most dangerous is the coxsackie virus. A turbine is washed and disinfected as well as a tub for condensate gathering and the rest of IU that now can be completely cleaned from mold and dust so that the IU is “clean as new” without exaggeration. Further, it is not necessary but the OU combs could be washed under the pressure and if the OU is extremely dirty, it could be disassembled and taken to a service to be completely cleaned. This operation increases the price of a big service. A lifetime of thus serviced air-conditioner could be extended up to 10 years because the main reason for air-conditioner retirements is irregular and inadequate service. Do not underestimate the dirt on your air-conditioner since it will very quickly lead to the compressor overheating and its breakdown. We do not even want to mention its influence on your health.

YOUR AIR- CONDITIONER SERVICE BELGRADE

It is very important, to follow established installation procedures during airconditioner installment set by the producer in installation guide. Not respecting this procedure may also lead to the early breakdown of a device, and even to losing guarantee if the omission is obvious. The most people want to install an air-conditioner during the summer when our people mostly use them and in relation to that, it is a period when they are being spoilt the most. Because of that, the most of serious airconditioning services work the most in this period. Due to work overload, as well as to the extreme weather conditions, it often happens even to the experienced fitters to make a mistake during the process of installing like: badly linked pipeline which causes freon leaking later or it does not do the device working testing which might have factory error or if the proper advice is not given to a client about how to use an air-conditioner. Because of that the installment process itself may last from 2.5 to 5 hours, which depends on the position of the device; the length of pipeline, the easiness of approach, a device size, the number of installers and etc. Let the installers make a choice of the IU and OU position at the split system, with your suggestions. If a client insists on the inadequate position, the installer is obliged to warn them to possible problems in the functioning of air-conditioners, and in the extreme cases he should even refuse such an installment if that presents a safety problem for a client and his surroundings.

The position of air-conditioner must satisfy following conditions:

• to be safe for you and your surrounding
• that it is possible to work in declared capacities ( maximum of energy using )
• to be accessible for maintenance – to be economical in terms of minimal installation and maintenance costs
• to satisfy aesthetic conditions to the greatest extent possible.

It should be mentioned that it is not always easy to fit in all conditions, so we often need to make special carriers of air-conditioners, in order to place it in the optimal position. It surely increases the costs for the price of a carrier as for one more coming of the installer if it is not possible to make it on the spot or in a day period, but on the other hand, later it decreases costs of servicing due to the easy access, increases stability and functionality of the device, raises the aesthetic level, and generally prolongs air-conditioner`s life-expectancy. All of these may increase the price of installment, usually from 20% to 50%. Always avoid to position airconditioner at the extremely inaccessible places, because it can late increase the price of service as much as to 3 more times in relation to the average price. Apart from that, you would not easily find an installer for that job. One more important piece of advice: Because of the failure frequency of inverter air-conditioners at our market, which is the consequence of the voltage variability in the city electricity grid you should necessarily buy some surge protector (voltage stabilizer, krk etc.) Without the protector, your guarantee would not be valid with the most of importers. In the end, keep in mind that the quality air-conditioners installment gives minimal costs of maintenance and a long lifetime.