School HVAC in Al Shara'i

Noise usually comes from high air velocity or an indoor unit mounted on a shared wall between two classrooms. We select units with low sound ratings, calculate air velocity at each outlet to prevent whistling, and insulate duct runs above the suspended ceiling. The exact unit position and diffuser angle are decided during a site survey of each room.

The prayer room needs wide, quiet air distribution at low level above worshippers, which is quite different from a classroom. Corridors need enough cooling to prevent hot air from flowing into classrooms when doors open. We design each zone on its own air circuit with a separate thermostat; the final layout depends on floor area and ceiling height on site.

In most cases, yes. We check the gap between the ceiling and the slab, and how accessible the ceiling void is, before making any decision. We fabricate round or rectangular ducts in our own workshop to match the building's exact dimensions, and we route them to avoid structural columns and penetrations. Where ceiling space is too tight, cassette or concealed units may be the better fit.

A low-mounted unit in a room full of students is easily damaged: fins get bent, the drain port gets blocked, and the fan grille gets broken. We mount units at heights and positions that keep them clear of students, while still delivering cooled air down to the seated zone. The precise position is set after the team measures ceiling height and seating layout in each room.

Large tasks such as running new ductwork or replacing multiple units are scheduled during the long summer break to avoid any disruption to lessons. Routine maintenance and isolated repairs can be arranged outside school hours or at weekends in coordination with school management. Work inside classrooms during the school day requires a site assessment first to confirm it can be done without causing disruption.

We size duct diameter and pressure based on distance and required airflow. For very long runs, we may add a second cooling unit rather than extend ducts excessively and lose efficiency.

This can happen if ducts are unbalanced or the original design did not account for solar exposure on distant walls. We visit to identify the issue and may install additional dampers or adjust fan speeds.

It depends on each wing's size and separation distance. If wings are very far or large, one unit may be insufficient. We measure area and solar load, then recommend the most cost-effective option.

We select units sized to cool without running at full speed constantly, saving power and extending fan and compressor life. Fan speed adjusts automatically based on actual classroom temperature.