Energy Efficiency of a Heat Recovery System: How the System Helps You Save on Air Conditioning

09/ 05/ 2026

Listen to online Stop   As the weather warms up and air temperatures rise, the load on air conditioning systems increases dramatically, which can have a significant impact on energy bills. It is during this period that we particularly face a lack of fresh air (stuffy conditions) and a feeling of discomfort, so we strive to create the most comfortable conditions possible for staying indoors. In extreme heat, we usually turn on the air conditioner as soon as we enter a room. However, it is important to understand that it does not provide a supply of fresh air. The main function of an air conditioner is to maintain a comfortable temperature for the air that is already in the room. Accordingly, if the air is not being refreshed, the cooling system simply circulates “stale” air throughout the room. And if you open a window, you’ll very quickly lose the pleasant coolness created by the air conditioner. As a result, the system will have to expend resources again to cool the room, which means additional—and essentially wasted—kilowatts of electricity. The best solution in this case is to combine an air conditioner with a heat recovery ventilator. These two devices are not interchangeable, but they work perfectly together: the air conditioner cools the air, while the heat recovery ventilator ensures a constant supply of fresh air without significant energy loss. The PRANA heat recovery unit is a modern and energy-efficient ventilation system that simultaneously removes stale air and supplies fresh air, ensuring a complete air exchange cycle. Thanks to patented copper heat exchanger technology, the system retains up to 98% of the coolness or warmth inside the room. How does this work? The heat recovery unit removes stale air—previously cooled by the air conditioner—from the room through a copper heat exchanger. At the same time, fresh warm air from outside enters the room through the same heat exchanger, but via a different duct. In other words, the supply and exhaust air do not mix. Thus, as the outside air passes through the heat exchanger, it is cooled to room temperature by the coolness of the exhaust air from the room. In short, this technology ensures that the air is constantly refreshed without significant temperature fluctuations. This reduces the load on the air conditioner, extends its service life, and creates a comfortable indoor microclimate. What’s more, the heat recovery unit’s energy consumption is negligible. For example, the average power consumption of the PRANA 150 model is just 7.3 W/h. Let the long-awaited warm days feel light and refreshing thanks to PRANA! Read more on the manufacturer’s official website: prana.ua

As the weather warms up and air temperatures rise, the load on air conditioning systems increases dramatically, which can have a significant impact on energy bills. It is during this period that we particularly face a lack of fresh air (stuffy conditions) and a feeling of discomfort, so we strive to create the most comfortable conditions possible for staying indoors.

In extreme heat, we usually turn on the air conditioner as soon as we enter a room. However, it is important to understand that it does not provide a supply of fresh air. The main function of an air conditioner is to maintain a comfortable temperature for the air that is already in the room. Accordingly, if the air is not being refreshed, the cooling system simply circulates “stale” air throughout the room. And if you open a window, you’ll very quickly lose the pleasant coolness created by the air conditioner. As a result, the system will have to expend resources again to cool the room, which means additional—and essentially wasted—kilowatts of electricity.

The best solution in this case is to combine an air conditioner with a heat recovery ventilator.

These two devices are not interchangeable, but they work perfectly together: the air conditioner cools the air, while the heat recovery ventilator ensures a constant supply of fresh air without significant energy loss.

The PRANA heat recovery unit is a modern and energy-efficient ventilation system that simultaneously removes stale air and supplies fresh air, ensuring a complete air exchange cycle. Thanks to patented copper heat exchanger technology, the system retains up to 98% of the coolness or warmth inside the room. How does this work? The heat recovery unit removes stale air—previously cooled by the air conditioner—from the room through a copper heat exchanger. At the same time, fresh warm air from outside enters the room through the same heat exchanger, but via a different duct. In other words, the supply and exhaust air do not mix. Thus, as the outside air passes through the heat exchanger, it is cooled to room temperature by the coolness of the exhaust air from the room.

In short, this technology ensures that the air is constantly refreshed without significant temperature fluctuations. This reduces the load on the air conditioner, extends its service life, and creates a comfortable indoor microclimate. What’s more, the heat recovery unit’s energy consumption is negligible. For example, the average power consumption of the PRANA 150 model is just 7.3 W/h.

Let the long-awaited warm days feel light and refreshing thanks to PRANA!

Read more on the manufacturer’s official website: prana.ua