Air Handling Units Effective air circulation

Mechanical ventilation operates year-round, but in winter, two elements are critical: heat exchanger frost protection and a correctly sized heater (water, electric, or gas – depending on the system configuration). In practice, the unit maintains the set airflow rates, while heat recovery minimizes heat loss, as recovery efficiency is at its highest during this period.

Operating costs primarily consist of fan energy consumption, air heating or cooling, filter replacements, and periodic maintenance. The most significant factors are the required airflow rates, system static pressure (resistance), filtration class, and the operating schedule. Therefore, when selecting an AHU, we calculate precise duty points and implement automation (schedules, night modes, and airflow regulation).

This depends on dust levels, operating hours, and the filter class. In clean office environments, replacement may occur every few months, while in more demanding conditions (near roads, production, or warehouses), it is more frequent. The most sensible approach is to monitor the pressure drop across the filters and replace them when they are actually clogged, rather than following a fixed date.

Heat recovery is the process of reclaiming energy from the exhaust air and transferring it to the supply air. Conventional ventilation without recovery exhausts air and brings in fresh air, but all the energy required for heating or cooling must be provided from external sources. Air handling units with heat recovery significantly reduce these costs—provided they are correctly selected and controlled.

Rooftop units are the ideal choice when the goal is to maximize internal floor space, shorten duct routes, and streamline maintenance through external access. Suspended units, on the other hand, are preferred in facilities without a dedicated engine room, where the equipment must be integrated into the ceiling void. The final selection depends on the building layout, service accessibility, and acoustic requirements.

We provide a comprehensive scope of services: from ventilation design and precise unit selection to professional installation and authorized commissioning, followed by dedicated AHU maintenance and operational support. In facilities where operational continuity is paramount, we treat our partnership as industrial maintenance management rather than a one-off delivery.

This is a unit that simultaneously supplies fresh air and exhausts stale air. This allows for maintaining pressure balance across different zones, controlling the direction of airflow, and ensuring stable operation at the set airflow rates. It is the standard configuration for the majority of commercial buildings.

Stable equipment mounting and effective load distribution across roof layers are critical. Roof supports simplify the installation of AHUs and utility systems, minimize on-site improvisation, and help maintain the precise alignment geometry of equipment and walkways.

Used for airflow regulation and shut-off in rectangular ducts and Air Handling Units. In practice, they help stabilize the system balance and ensure correct control of operating modes (e.g., bypass, mixing, and sectional control). A high-quality damper must maintain air tightness and provide repeatable positioning.

Monoblock units integrate ventilation, heat recovery, and often heating/cooling as well as controls within a single housing. This provides you with one device, one controller, and a single point of service. While modular systems may offer greater flexibility, they increase the number of components, connections, and potential points of failure.