Modular air handling units (ALUs) are typically used in systems with high airflow rates (usually above 10,000 m³/h), hence their large size. In modern buildings, due to limitations imposed by developers or owners regarding investment and functionality, equipment rooms are often very small. This can make it difficult or impossible to remove components requiring routine maintenance and cleaning, such as surface coolers and filters, due to insufficient space. In some buildings, originally designed equipment maintenance access routes are obstructed after construction, hindering access for equipment replacement or repair.
Therefore, during construction, it is crucial to ensure ample space and access for maintenance. Furthermore, when selecting and ordering equipment, manufacturers can be requested to modify the ALU's structure based on the specific conditions of the equipment room, such as designing the surface cooler with side-mounted tubes.
