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Mechanical ventilation and air conditioning (MVAC) system refers to the equipment and network that heat, cool, humidify, dehumidify, ventilate, or purify air in a space, excluding window or split air conditioners.

Electrical installations means the construction or installation of electrical wiring and the permanent attachment or installation of electrical products in or on any structure that is not itself an electrical product.

Fire Services Installation (FSI) includes systems and equipment designed to prevent, control, and extinguish fires in buildings. These installations are crucial for occupant safety, property protection, and meeting fire safety regulations.

Mechanical ventilation and air conditioning (MVAC) system refers to the equipment and network that heat, cool, humidify, dehumidify, ventilate, or purify air in a space, excluding window or split air conditioners.