Selecting the right AHU cooling coil requires more than checking cooling capacity. This guide explains how coil rows, fin density and face velocity affect heat transfer, dehumidification, pressure drop, energy use and condensate carryover. It also includes key equations, a worked example and a practical selection procedure.

HVAC water treatment protects chilled-water and condenser-water systems from scale, corrosion and biological growth. This guide explains key risks, water quality checks, treatment methods and maintenance practices to improve efficiency, reliability and equipment life.

Choosing the correct chilled-water pipe insulation is essential for preventing condensation, reducing heat gain and protecting pipes from corrosion. This guide compares elastomeric rubber, fibreglass, PIR, PUR, phenolic foam, cellular glass, polystyrene, polyethylene and mineral wool, covering their applications, advantages, disadvantages, vapour-control requirements and installation considerations.