Air-Handling Units & Terminal Air Distribution installations at King Fahd International Airport (DMM)

Once chilled water is produced, it is the air side that delivers comfort to passengers. This sub-category covers built-up and modular air-handling units, packaged rooftop units, fan-coil units, ducted split systems, and VRF/VRV heat-recovery systems for offices, lounges and support buildings, plus displacement ventilation for high, glass-fronted hold rooms. AHU selection in high-heat climates prioritises desert-grade pre-filtration, high external static for long terminal duct runs, condensate management at 85% apron humidity, and AHRI 430 certification. VRF/VRV systems serve the back-of-house and modular expansions where central plant is uneconomic. Buyers compare casing thermal-bridging, fan-array vs single-fan designs, and energy-recovery wheels for fresh-air make-up.

Covering 776 square kilometres, DMM is the largest airport site in the world by land area — an absurdly oversized template that includes its own Aramco terminal and Royal pavilion. For years it punched below its weight; now it is catching up, with 13.2 million passengers in 2024 and a new masterplan announced in 2023 to lift capacity to 40 mppa. Riyadh Air and a buoyant Eastern Province economy are reshaping the traffic curve.