{"id":5168,"date":"2026-10-07T15:57:41","date_gmt":"2026-10-07T15:57:41","guid":{"rendered":"https:\/\/systemapolska.pl\/?post_type=blog&p=5168"},"modified":"2026-10-07T16:09:10","modified_gmt":"2026-10-07T16:09:10","slug":"a-destratifier-what-is-it-and-how-does-it-work","status":"publish","type":"blog","link":"https:\/\/systemapolska.pl\/en\/blog\/destratyfikator-co-to-jest-jak-dziala\/","title":{"rendered":"Destratification in a hall \u2013 what is it and how does a destratifier work?"},"content":{"rendered":"

In winter, the same scene is often repeated in a high-ceilinged hall: staff are freezing near the floor, whilst the thermometer under the roof reads a dozen or so degrees higher. The heating is running at full power, but much of the heat accumulates in the upper parts of the building and escapes through the ceiling. Destratification<\/strong> It is a way of recovering that heat and channelling it to where it is needed \u2013 to the areas where people spend their time.<\/p>\n\n\n\n

In this guide, we explain what a destratifier is, how it works, where it is used, at what height destratifiers are installed, and what factors determine how much you can save by using them.<\/p>\n\n\n\n

What is air destratification?<\/h2>\n\n\n\n

The rise of warm air is a natural phenomenon \u2013 warm air is lighter than cold air. In a low-ceilinged room, this difference is negligible, but in a hall with a height of 8, 10 or 15 metres, a distinct temperature stratification (stratification). It can be considerably warmer under the roof than in the working area, and the excess warm air in the upper parts of the hall increases heat loss through the roof and ceiling. The higher the room, the greater the difference in air temperature between the ceiling and the floor \u2013 which is why this problem primarily affects halls and other high-ceilinged rooms.<\/p>\n\n\n\n

Air destratification involves levelling out this difference: warm air from beneath the ceiling is directed back downwards, and the air temperature throughout the space becomes more uniform. The effect is particularly noticeable with forced-air heating, where the heater blows out warm air, which then rises rapidly.<\/p>\n\n\n\n

What is a destratifier?<\/h2>\n\n\n\n

Destratiator<\/strong> (also known as a destratification fan, or colloquially as an air mixer) is a device fitted under the roof of a hall, which draws in warm air from the upper parts of the room and directs it downwards in a vertical stream. The design is simple: an axial fan, a housing and an air outlet grille with adjustable louvers (the louvers control the direction of the airflow), whilst a thermostat is used to control its operation.<\/p>\n\n\n\n

An industrial destratification fan differs from a domestic ceiling fan primarily in terms of its capacity and the range of its airflow. In tall buildings, it must direct the flow of warm air towards the area where people are present, which is usually 2\u20134 metres above the floor \u2013 only then does the air temperature in the working area actually rise. For example, the DS destratifiers manufactured by Systema Polska feature fans with diameters ranging from 400 to 800 mm and air flow rates from approximately 4,400 to 19,000 m\u00b3\/h, depending on the model.<\/p>\n\n\n\n

\"DS
DS destratifier installed under the hall roof<\/figcaption><\/figure>\n\n\n\n

How does an air destratifier work?<\/h2>\n\n\n\n

The principle behind it is simple:<\/p>\n\n\n\n

    \n
  1. Warm air from the heating system rises to the ceiling.<\/li>\n
  2. The thermostat-controlled destratification fan draws in warm air from beneath the roof.<\/li>\n
  3. The air flow \u2013 directed by the louvres \u2013 is channelled downwards into the area where people are present.<\/li>\n
  4. The temperature in the hall evens out, and the heat that would previously have escaped through the roof now warms the workstations in the area where people are present.<\/li>\n<\/ol>\n\n\n\n

    A destratifier is not a heat source \u2013 it utilises heat that has already been generated. It therefore operates independently of the heating system: it works in conjunction with other heating appliances \u2013 such as gas heaters, infrared radiators or heating and ventilation units. A water heater connected to the boiler room can also serve as a heat source. In every case, the destratifier increases the efficiency of the heating system by improving air circulation within the rooms.<\/p>\n\n\n\n

    Where are destratifiers used?<\/h2>\n\n\n\n

    Their main application is in tall, heated buildings \u2013 as the temperature difference is greatest in such spaces. Destratification units are ideal wherever heat accumulates near the roof and people work at ground level:<\/p>\n\n\n\n