Air Conditioning

Bulkhead Units

Concealed in the ceiling — barely visible, powerfully effective.

A bulkhead unit is installed inside a purpose-built cavity in the ceiling — often called a 'bulkhead' or 'soffit.' The unit itself sits entirely within this cavity; only a slim discharge grille is visible from below, giving a far cleaner aesthetic than a standard wall-mounted head.

Bulkhead units are ducted on the discharge side — conditioned air is delivered through the visible grille, while return air may be drawn from the same grille or a separate return. The refrigerant pipes and condensate drain run through the bulkhead cavity to the outdoor unit, leaving walls and ceilings uncluttered.

They are a popular choice for heritage and high-end residential projects where traditional wall-mounted indoor heads would compromise the aesthetic, as well as commercial fitouts with existing bulkhead or joinery opportunities.

Bulkhead Units diagram
Gallery

Installation Photos

Applications

Common Installations

Heritage Buildings

All pipework hidden within the bulkhead — no exposed piping on historic facades or corniced ceilings.

High-End Residential

Achieves a near-invisible installation where design integrity is critical.

Retail & Hospitality

Delivered through soffits above servery counters or feature bulkheads.

Hallways & Corridors

Narrow profile suits tight spaces above corridor bulkheads.

Kitchens

Positioned in kitchen bulkheads above cabinetry — efficient, clean, and unobtrusive.

Diamond Air Solutions

Ready to install a bulkhead unit?

Our team handles everything from design and supply to installation and commissioning across Greater Sydney.

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