Bespoke AHUs for specialist applications

Klima-Therm offers a wide range of custom air handling units (AHUs) with air volumes from 0.5 to 35m³/s – a total of 77 sizes – making their installation suitable for both indoor and outdoor applications. For even more flexibility, the ahus can be supplied completely assembled or dismantled for onsite assembly, according to project requirements.

With a comprehensive range of airflows, the selection of functional modules and options, and the total flexibility of configurations, the custom AHU range is the ideal solution for the industrial sector, clean rooms and operating theatres.


There are four versions of the AHU available:

  • Standard series (single fan with a rectangular section).
  • Narrow series (single fan with a square section – useful to minimise the footprint taken up by the unit).
  • Lowered series (combined fan – useful to minimise the total height of the unit).
  • Vertical series.

Each custom air handling unit boasts high-quality ahu components, a variety of sections and accessories, a wide range of flow rates and configuration flexibility. The RHOSS range also offers unlimited modularity for easier transport and on-site positioning.

Thanks to our fully equipped, state-of-the-art R&D lab, we can conduct functional and performance unit tests on the AHUs to reassure you about the outstanding reliability of machines and excellent energy efficiency of the proposed systems.

Our partner, Saiver, are able to offer bespoke designed AHUs with dimensions adjustable in increments of 50mm, making it possible to fit almost any location, within the limits of the latest ErP regulations.


Designed to regulate the conditioned air from central air handling units into the occupied space, the wide range of terminal units supplied by Klima-Therm include fan coil units and chilled beams with a comprehensive range of flow rates to suit any application.