Air Handling Unit Maintenance

AHU – maintenance/repair/upgrade

At either end of a supply or extract ventilation system there will be an air handling unit or extraction fan. The cleanliness and performance of the system can be compromised if debris is allowed to build up on coils in chambers and on fan blades.

Condensation is also frequently present within an air-handling unit, which provides heated or chilled air. The resultant moisture can cause corrosion to drip trays and floors. These can be economically repaired and coated to provide a cost-effective alternative to replacing the entire unit. Filter changing is a further service that can be provided. We have access to a wide range of filter suppliers who can provide bag and panel filters in all sizes and specifications from EU1 to HEPA. Panel locks and seals can also deteriorate over time and again we are able to source a wide variety of components to prevent leakage from loose panels.

The replacement of drive belts and pullies is sometimes needed to maintain performance or alter airflow and we have the engineering ability to conduct such work. Another frequent customer request is the replacement of automatic roll on filter mechanisms within air handling units. The strip out of the old mechanism and fitting of a frame to accommodate a superior filter media again provides an economic solution to the cleanliness of air entering a system. Irrespective of age or make the spares and expertise are available to ensure that you get the most from your air handling unit plant.

Our team of experienced surveyors have an in-depth knowledge of the operational and maintenance requirements of all types of air handling unit. A detailed examination of the unit will be undertaken so that a quotation covering all the required elements i.e. coil cleaning, filter replacement and drive belts can be prepared. All examinations of this nature are free of charge.

Case history


air-handling-unitThis hospital has a large number of air handling units serving a wide range of medical areas from wards to operating theatres. Many of these units feature a “roll on” filter mechanism which are known to be temperamental. Ductbusters have the expertise to remove the old “roll on” mechanism and install an internal framework to accept panel filters to the appropriate specification. A hospital spokesman commented “The option offered by Ductbusters proved to be cost effective and was completed with the minimum of disruption.”

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