Air Quality: How an Air Handling Unit Can Help

AHU explained

So, how does an AHU work exactly? Comprising of a steel box or unit, usually located on the roof of a building, in a basement or on a floored area, an AHU is designed to condition and circulate air to part of a building or an entire area.

Fresh air from outside is sucked or pulled through the unit, with rotating metal dampers controlling how much air enters or exits the device. Air is then passed through filters, which remove dirt, dust, pollutants and allergens. Pressure sensors may be installed to indicate when the filters need replacing.

After the air has been filtered, it passes by coils that can either cool or heat the air, depending on whether you want to lower the temperature in your space or add warmth to it.

Following this, a fan then moves the air through a ductwork ventilation system to the designated part of the building, providing its occupants with clean, temperature-controlled air. Separate ductwork can also carry air out of a building, expelling it back outside.

Not only can an AHU provide heating and cooling within one system at the touch of a control, but many units also offer dehumidifying functions. This means excessive moisture can be removed to prevent mould and damp from forming.

Suitable for all businesses

Businesses of every shape and size can benefit from having an AHU installed, especially those where temperature precision is crucial for the effective operation of equipment or machines.

Improved air quality

An AHU ensures one area or your whole building is controlled at the right temperature, also filtering air, thus removing potential airborne allergens and pollutants. Improving the air quality in your space can reduce the incidents of germs and other substances that could hinder the health of your workforce.

Having a workplace that is adequately ventilated can also have a direct impact on productivity. In fact, studies show that productivity can increase by 16% in working environments that are properly ventilated, while job satisfaction can rise by 24%.

Energy efficiency

For those businesses looking to improve their energy efficiency levels, installing an AHU makes for a worthwhile investment. By heating and cooling your premises within one system, you can make savings on your energy bills.

Plus, with high-tech components, designed to reduce energy consumption, such as motors and fans, AHU ventilation systems can help to keep your carbon footprint down. Indeed, so sophisticated are many of the components that an efficient heat exchanger can recover up to 90% energy.

Even better, thanks to advanced in-built features, AHU systems operate without being noisy.


In order to further capitalise on the energy efficiency gains, businesses can choose from a wide range of different AHU sizes, to suit each individual environment. There are also various versions available, such as those with a single fan or a combined fan, as well as those that can be custom made to fit the unique needs of each business.

With units boasting air volumes ranging from 0.5 to 35 m³/s, this provides great versatility with regards to installation, enabling them to be used for indoor or outdoor applications.

By choosing a high-quality AHU system and keeping up with its regular maintenance, you can benefit from a reliable, energy-efficient, cost-saving asset to your business.