12/06/2026
Trade by Trade Spotlight. Air Conditioning Installers.
What is easily missed in an HVAC estimate.
Split systems and ducted systems price very differently.
The choice changes equipment, labour, and installation scope.
Compare early.
Late changes impact multiple trades and structure.
Mechanical decisions affect structure and cost.
They influence ceiling space, framing, and services coordination.
Commonly under-allowed factors include:
• Bulkheads and ceiling drops for ducted systems
• Additional electrical and controls requirements
• Outdoor unit placement and access
• Zoning complexity and control systems
• Coordination with framing, insulation, and plaster
These are not minor upgrades.
They change both build cost and program.
This is not just an equipment decision.
It is a design and coordination decision.
You protect your margin by confirming the system early.
Compare split vs ducted at concept stage.
Allow for structure and services integration.
HVAC rewards early planning.