Without regular maintenance, air handling units lose efficiency, consume more energy, and are more likely to fail unexpectedly. Blocked filters restrict airflow, dirty coils reduce heat transfer, and worn components put mechanical stress on the rest of the system. Routine servicing prevents avoidable breakdowns and keeps running costs in check.

Twice a year is the standard recommendation for most commercial AHUs. High-occupancy or critical environments such as hospitals, cleanrooms, or food production facilities may require more frequent attention. We assess the appropriate schedule at first visit based on unit type, usage, and operating environment.

Unusual noise from the fan or motor, reduced airflow, inconsistent temperatures across zones, increased energy consumption, and condensation or moisture around the unit are all indicators that your AHU needs inspection. Catching these early is far cheaper than emergency repairs or unplanned downtime.

Yes. We programme maintenance visits around your building's operational schedule. Where access is limited, we work evenings, weekends, or in planned maintenance windows. We confirm the timing at booking to avoid disruption to your occupants.

Significantly. Clean coils transfer heat more effectively, clean filters reduce static pressure, and correctly aligned belts and bearings reduce motor load. Buildings with properly maintained AHUs typically see measurable reductions in energy costs compared to unmaintained systems running at degraded performance.

Yes. Alongside planned maintenance contracts, BVS carry out reactive and emergency call-outs for failed or underperforming AHUs. We keep a broad stock of common components and can often carry out same-day or next-day repairs.