What to consider when buying an air conditioner: type, power, brand, license.
Choose and Buy an Air Conditioner. Licensed Residential Air Conditioners

Buying an air conditioner is a significant financial expense. Therefore, anyone who sets out to choose and buy an air conditioner should approach it responsibly.
First of all, you need to decide on the type and capacity of the unit you are buying. They are selected based on the room in which the air conditioner is intended to be used. If the capacity of the new purchase does not match the room type, its characteristics, or size, such an air conditioner will not last long. For example, portable split systems will not be able to maintain the required climate in a very large apartment and will fail very soon.
For this reason, before buying an air conditioner you should determine the purpose of the room. Different capacities and types of air conditioners are required for an apartment, an office, or a production facility. You need to take into account the shape and size of the room. Various equipment and people also emit heat, and this must be taken into consideration. You should know the building's orientation with respect to the cardinal directions and the placement of the windows in the room. It is also very important to calculate the area of glazing. A forced ventilation system is another important factor in choosing an air conditioner.
All these conditions must be considered together. If a salesperson or installer, having learned only the room area, gives advice about the model, price, and installation of the air conditioner, it is safe to conclude that this is an unscrupulous company.
A technical specialist must come to inspect the room and prepare the necessary calculations. No reputable company will take on the installation of air conditioners without prior consultation with the customer.
Even licensed household air conditioners cannot be called ordinary home appliances that start working immediately after purchase. Much of an air conditioner's performance depends on how well and professionally the installation was carried out. Consumers should take service and warranty maintenance of the equipment just as seriously.
Statistics confirm this statement. More than 80% of all breakdowns found in air conditioning systems in Russia were caused primarily by unprofessional installation, performed either by lone handymen or fly-by-night companies. Only reputable companies with several years of experience in this market can professionally install climate equipment.
Before you bind yourself with a service contract, find out whether the company's activities are licensed. Do they have all the necessary certificates required to carry out the work? A reputable company will always ensure that its documentation is in proper order.
Carefully study the contract you sign with the company. After all, the installation of air conditioners is far from the only thing their specialists will have to do. They will also be responsible for the warranty and service maintenance of the installed equipment. Remember that warranty service and maintenance service for air conditioners are completely different things.
Warranty service is provided by the manufacturer through authorized companies, and only within a strictly defined period.
Service maintenance ensures the uninterrupted and long-term operation of your air conditioner. Such work is not limited to cleaning filters or replacing batteries. Specialists should regularly carry out a comprehensive inspection of the climate equipment. Such inspections can be performed by professionals whose services reputable companies use.
When it comes to buying air conditioners, do-it-yourself approaches can lead to dire consequences. Remember, buying and installing an air conditioner should only be done with the help of serious professionals.