The overheating temperature of the air-conditioning devices ejected from a heated place by the ventilation systems intersects with the fresh air brought from the outside to the inside and is used by heating thanks to the heat recovery units.

With this work, the decrease in the hot air in the environment is prevented, thus saving energy. The most ideal working principle is to have the understanding of heating the fresh air coming from outside.

It is ensured that not only the hot air, but also the cooled air in the summer months is identified with the fresh air outside. In winter, the heat coming out and the fresh air entering are heated, and in summer, the cold air coming out and the fresh air entering are cooled.

In both ways, a large amount of energy is gained. The working principle of heat recovery units is highly preferred as it provides an energy saving between 60% and 70%.

The basic principle in ventilation and air conditioning devices is the displacement of air. Air conditioners additionally heat or cool the air as desired.

According to the nature of the air coming out from the inside, it is the biggest advantage of adding it to the incoming air. The usage area of these units, which are used to provide clean air at all times of the year, is very wide. When there are great differences between the outside air and the indoor air; benefits and savings are fully understood.

In large commercial buildings or industrial facilities that are difficult to heat or cool, the very high use of energy imposes an additional burden on the budget.

In order to prevent this and to control expenditures, energy-saving heat recovery units are used. Considering that buildings with high ceilings will hardly heat or cool, the importance of these units will be better understood.