Whoever was interested in installing an air conditioner in their home for the summer, surely, already did it and was informed of which would be the most suitable for their needs. Of course, also, there are cases in which everything is left for the last moment or is performed on impulse after a first week of suffocating heat.
Summer is the time when we remember the air conditioning. If you have been lazy and the heat has been put on you and you are still unclear about the type of air conditioning that best fits your life. The air conditioning is a great ally of well-being in interior spaces.
For this to happen, when buying one of these equipment it is necessary to take into account a series of factors so that the choice is appropriate.
Below we share a selection of tips you should take into account, and we hope will be useful if you are thinking of purchasing an air conditioner:
The Thermal Balance:
On the one hand, it is necessary to take into account the climate of the area in which you live. For example, a wet city will require a different type of air conditioner than that required in drier latitudes.
On the other hand (super fundamental aspect!) It is necessary to know what capacity is needed for each cubic meter of the environment in which it will be installed. The general calculation establishes about 50 BTU per cubic meter.
Choose the right size and power is very important factor: the air conditioner on one side cools and on the other removes moisture from a closed place. If the appliance is small for a room, it will not cool it sufficiently, but if it is too large it will not remove moisture well.
Making the account in square meters can be misleading, since not all environments have the same height, variable that will modify the performance of the equipment.
Of course, for this you can ask the technician who will install the air conditioner, before the purchase, make a visit to the environment and perform the calculation.
More than the simple calculation:
As we have said, requesting the help of a specialist before buying an ac is a truly intelligent decision, since the simple calculation is sometimes not enough to reach a successful conclusion.
He will know how to contemplate other important factors to know what kind of equipment you should buy, such as the impact of sunlight on the environment, the volume of artificial lighting, the number of people that inhabit the space, the thickness of the walls, the type and number of windows and doors, etc.
All these items are of vital importance:
Have you not noticed in some old houses, wide walls and high ceilings, which are kept cooler?
This has an explanation: They have better thermal insulation in relation to many modern homes.
On the other hand, specialists advise that if it is desired to refrigerate different environments, the most advisable thing is to install small equipment in each room, and not a monumental one in central position.
This will lead to very cold environments and others in which, on the other hand, the cold will not be enough.
How many BTUs does an air conditioner need?
A frigoría is a unit of measurement of the cold, symbol fg, which is equivalent to the amount of energy necessary to reduce the temperature of 1 g of water by 1 ºC.
To find out how many frigories you need. For this you need to know how many m² the room or rooms where the device is to be installed.
Once we know the m², we must apply a simple rule that consists of multiplying by 100 the m² that the room has, and we will obtain the approximate result of the frigories that are necessary to obtain a comfortable solution.
Surface of the room: 50 m².
Calculation of approximate necessary Frigorías: 50 m² x 100 BTU / m² = 5000 BTU
Although it is obvious, it never hurts to say it: The installation of an air conditioning must be carried out by a specialist technician. It is always advisable to approach installation companies that are recognized and have registered technicians.
Opt for the most energy efficient equipment within your pocket. In general, the most efficient air conditioning equipment (rating A on your energy label) is somewhat more expensive, but that extra money in the initial outlay will compensate you in the electricity bills during the useful life of the appliance.
In fact, according to experts, the price difference between high and low energy efficiency equipment has decreased and sometimes the most efficient models are not more expensive than those that are not.
With clear data well written down in a notebook, it is always advisable to buy the air conditioner in a trustworthy store, in which you know that you have a good advice about the differences between the brands, in addition to a good warranty.
Sometimes paying a little more money, you can avoid several headaches! As for the equipment itself, it is good to choose those that have a known origin, verify that they use ecological gases and contemplate their efficiency levels, written on a label on the front of the product.
How much power does an air conditioner need?
An air conditioner will consume depending on your needs because, when it reaches the set temperature, it switches off automatically.
Buying a more powerful equipment, does not mean that the spending on consumption will be greater, but that it will reach the temperature you want before.
The power of the equipment is determined by the square meters of the room.
For example, for a room of 50m2 we will need an apparatus of about 5000 BTU -or what is the same of 3.48W / h and 4.65W / h respectively-. And to know the consumption of the device we will be guided by the label of energy efficiency.
This classification refers to the efficiency of the device, that is, it classifies the machines according to their greater or lesser consumption. The order in terms of energy classification is specified in the following image:
What is the right time to buy an ac?
If it is possible and it is not an emergency, it is good to buy the air conditioning during the winter. On the one hand, you will see that in the gondolas the prices will be lower compared to the summer.
On the other hand, it will be easier to get a specialist technician, since during the summer period their agendas are really loaded. With time and tranquility, the work will be more efficient than when you should finish your work and run to another site.
What type of air conditioner do I need to install?
First, it should be noted that, despite what most people think, there are many types of air conditioning and a list of these is shown below:
There are air conditioners of many types: window units, wall units, portable systems, central air conditioning units for the whole house, ducts, ceiling, etc.
A few years ago the window devices were the predominant ones in the domestic market but now what commands are the split or wall systems, which consist of one or more indoor units and an outdoor unit where the compressor is located.
The systems of soil, ducts or power plants have a greater complexity when installing them, so their cost is higher, something that in the end does not usually rent for a medium-sized home.
The Window type ac:
The window air conditioner is formed by a square frame that integrates all the necessary elements. Therefore, in order to install it, a hole must be made in the façade enclosure, so that the device is between the inside and the outside.
The part that remains outside is where the compressor is housed.
As advantages we can point out the ease of installation and the low cost of maintenance but, on the contrary, they are generally noisier than the wall units, have a higher electrical consumption and, finally, there are neighborhood communities that do not allow their installation because deteriorates the visual aspect of the facade.
Wall or Split type ac:
The wall equipment is the equipment that most demand now, except, of course, homes that have a pre-installation of air conditioning with ducts.
The fundamental reason is that the unit that contains the compressor of the building is on the outside and can be placed in any area that does not damage the aesthetics of the facade as much as those of the window.
In addition, they are much quieter than the windows. At first, this may seem like it’s not important, but, in the long run, a team that does not cause headaches is welcome.
Finally and as arguments against is the cost of this system, since the installation and the price of equipment is somewhat higher than in the wall.
Another point to emphasize in this type of equipment is that it is only necessary to practice a small drill to connect the Split and the outdoor unit with electrical power and with the coolant ducts.
Roof console Air conditioning system
The system is similar to the previous one, that is to say, the ceiling console is installed inside the house and the equipment provided with the compressor is installed on the outside of the house.
The disadvantage of this equipment is that it considerably increases the associated installation costs due, fundamentally, to its volume and weight. In addition, it must be flush with the ceiling, so it is sometimes necessary to install a false ceiling so that the unit is perfectly integrated.
On the other hand, due to the weight of the equipment, it is sometimes necessary to perform a calculation to estimate if the floor is capable of resisting said load.
On the other hand, as arguments in favor we have that the power of the unit is much greater than the wall units and, in general, they are used for the air conditioning of large rooms.
Central Heating System
The central air conditioners are air conditioners that use compact or Split type equipment and also fan coils.
The complexity of the installation is much greater, because the air conditioning is distributed through ducts that guide the air conditioning throughout the house.
Therefore, the installation cost is very high, but it increases the added value of the home and, aesthetically, it is better since the splits disappear from view.
What characteristics should air conditioning meet?
In principle, the basic characteristics to be demanded of an air conditioning equipment are a thermostat, regulation of the air flow, regulation of the speed of the diffuser grilles and an energy efficiency system that stops the fan when the equipment is not cooling.
On the other hand, it must be demanded that the filters are easily accessible so that they can be cleaned regularly by the user, although this need for maintenance is tending to disappear with the addition of electrostatic filters.
One of the features that incorporate the latest generation Mitsubishi Electric air conditioners is the inverter technology. In essence, this system allows regulating the frequency, voltage and current of a device.
To give an example, traditional equipment manages to reach the temperature of the thermostat by cycles of ignition off. However, through this technology it is possible to reach this temperature faster without repeating all these cycles.
At this point we must mention that the average price of these units is more expensive than traditional units, however, comfort and energy efficiency is much higher.
Therefore, this additional cost can be more than amortized over the entire useful life of the equipment.
The way to get the best comfort is that the inverter technology is able to maintain the comfort temperature in a certain range, avoiding the annoying fluctuations of traditional equipment.
Traditional equipment cools a room to a certain temperature and switches off until the room heats above a certain threshold.
The noise level
Noise is a factor to be taken into account, since nobody likes the device to bother. Between 20 and 25 decibels (dB) would be the interval that I would determine to have a device that does not disturb the moments of maximum silence.
The outdoor units or compressors are usually noisy, so it is recommended to keep them away from windows and rooms.
AC Types according to the technology with which they work
The compressor starts working at 100% to reach a set temperature. Once obtained, it keeps it starting and stopping, which generates peaks of consumption and excess of heat or cold.
Its use is recommended for rooms where we do not usually turn on the machine, because being more economical than the inverter system, the difference in machine consumption may be insignificant in terms of economy.
Air conditioning inverter
It is recommended that the device has Inverter technology, since it works much better and maximizes its performance. Basically, it consists in keeping refrigeration constant, thus saving consumption and avoiding drastic temperature changes.
The compressor is ready to work at a higher capacity (up to 120%) at startup, so that the desired temperature is reached before.
This technology allows to always maintain the stable temperature, without peaks, and achieve a more efficient consumption (less expense).
The inverter devices consume less than the air conditioning machines on / off, are more respectful with the environment, are less noisy and have variable power peaks, which allows them to have a more powerful start as well as to reduce the power utilization when It is no longer necessary.
Take into account the EER
The EER or Energy Efficiency Ratio is used to measure the efficiency of a specific unit of air conditioning. The higher the number the higher the efficiency and the lower the cost of operating the device.
Small units currently have an EER of 11, while the most efficient units usually have an EER of 13. Do not worry if your unit does not reach the maximum values shown here, normally the most valued and valued are below.
It is the ratio between the refrigeration capacity and the energy consumption used to obtain it. Simply, the higher the EER, the higher the performance of our air conditioning.
What capacity should my air conditioner have?
The power of the equipment that we must install is determined based on a series of parameters that, in general, are: size of the house, number of electrical equipment, occupation of the house, level of isolation of the house, orientation of the house, number and size of windows.
Such as; The capacity of an air conditioning system is measured in BTU / h (British Thermal Units per hour). A greater number indicates a greater power.
For a room of about 40 square meters would be enough with 5000 BTU / h while for a room of 300 square meters would require about 19,000 BTU / h, a really high value.
However, as said before, the size of the room is not the only factor that contributes to the calculation of capacity, there are other elements that must also be taken into account and that are important:
- The number and size of the windows.
- The orientation of the room to be cooled.
- The amount of light that enters the room.
- The level of insulation with respect to cold or heat.
- How many people use the room habitually.
- The number of computers or electrical appliances, if any.
Sellers usually have small sheets indicating the necessary capacity based on a few small factors but in most cases they are not very suitable. The best thing is for the installer to make an exact study of where the machine is going to be placed.
It is very important to choose the correct capacity. A small unit will not have enough power to cool the room on a hot day and a large unit will cool the room too quickly and raise the humidity in the room.
Maintenance of air conditioning
Your air conditioner should be easy to clean. The area of the filters, especially, should be washed with soap and water every few months.
If it is not done, bacteria and particles accumulate that reduce efficiency and can cause bad odors. It is important to ask the seller how to remove those filters and see if it can be done easily or not.
What is the cost of maintenance?
In most places when you go to buy an air conditioner, they indicate a kilowatt-hour cost that is not usually true. There are guides that estimate the expenditure of the device according to different parameters.
Normally you usually enter the cost of electricity in your place of residence and the EER of the appliance. Print the result and take it to the store when buying your air conditioner.
What air conditioner brand should I buy?
You must buy, within the correct type and capacity, the air conditioner that has the highest EER, provided it is not an exorbitant disbursement. Buying a device with less EER and cheaper is usually not a very advantageous option.
Do not trust the offers and always look for a brand of trust and quality. If you buy a system of unknown brand in the long run you can get more expensive.
Of course, common sense is the best rule to apply although there are some basic guidelines:
- Check different prices and opinions on Internet pages.
- It uses buying systems between different models and brands.
- Check the manufacturer’s website and check the EER and BTU / hour values.
- Ensure the existence of a technical service network.
Where should I buy my air conditioner?
The air conditioning units are heavy equipment so it is best to buy it in the same city in which they will be installed. Make sure that it is an authorized establishment such as uae souq because some sellers do not take care of guarantees and returns.
Always use your credit card as it is a system that is safe, fast and will always be supported by the bank.
If the unit requires that it be installed by a professional, it checks if the seller has one and in that case that increase will be in the total cost. Make sure the installer is licensed and insured.
In all cases, a preliminary budget is required with all the details included.
Many modern air conditioners can include interesting options, in addition to the usual ones. For example, there are some that also serve as heating or dehumidifier. Some even include features such as Wi-Fi control and integration in home automation systems.
Of course, all these supplements will increase the final price. Therefore, I recommend you look at features you’re really going to use. It is useless to purchase an expensive high-end product that you won’t use some of its features in the long run.
In conclusion, we recommend you think about what room or rooms you want to put the air conditioning and exactly where you would go. Once in the store you should ask about things like noise, cleaning, Inverter technology and features.
Knowing all that you can start choosing according to the price. When you have it installed at home remember that you should not put it to the maximum. The ideal is between 24 and 26 degrees.
With all these indications we hope that you have a clearer idea of what is available in the market and what are the characteristics that we must study and demand based on the air conditioning needs of our home.