Ducting
Supply, return, fresh air and exhaust ductwork, fabricated, insulated and balanced for even airflow.
Air only arrives where the ducts carry it. We size each run, fabricate it to drawing, seal and insulate it, then balance the airflow at every outlet.
What is included
Duct design and sizing
Each run sized for the air quantity it has to carry, at a sensible velocity.
Duct fabrication
Rectangular and round ducts made to the approved shop drawing.
Insulation
Thermal and acoustic insulation to stop condensation and noise.
Supports and hangers
Ducts hung level and secure from the slab or structure.
Grilles, diffusers and dampers
Air outlets and volume control dampers fitted and aligned with the ceiling.
Air balancing
Airflow measured and adjusted so every outlet delivers its share.
Even air in every corner of the floor.
Four steps from enquiry to handover
Site measurement and drawing
We measure the site and prepare a shop drawing that clears beams, lights and other services.
Fabrication
Ducts and fittings are fabricated and tagged to the drawing.
Erection and insulation
Ducts are hung, joined, sealed and insulated.
Balancing and handover
Airflow is balanced at each outlet and the readings are handed over.
Every duct has one job
Supply air
Carries cooled air from the unit to every outlet.
Return air
Brings room air back to the unit to be cooled again.
Fresh air
Brings in filtered outside air so the space does not feel stale.
Exhaust
Removes heat, fumes and smells from kitchens, toilets and process areas.
Typical applications
Offices
Concealed ducts above false ceilings
Factories
Ventilation and exhaust runs
Restaurants
Kitchen exhaust and fresh air
Hospitals
Filtered, ducted air supply
Questions about Ducting
What are the ducts made of?
Most comfort-cooling ducts are made from galvanised iron sheet. The sheet thickness depends on the duct size and pressure. Other materials are used where the application calls for them.
Why does ducting need insulation?
Cold air inside an uninsulated duct makes moisture condense on the outside and wastes cooling. Insulation prevents both.
Can you modify existing ductwork?
Yes. We add branches, reroute runs and rebalance the system when a layout changes.
Often taken together
Ask about Ducting
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