Soak the baffle filters flat in a non-caustic degreaser, and service them roughly every six weeks rather than quarterly, because a canopy over a multi-burner range moves considerably more air. Keep every product off the chrome and brass trim on the range-styled canopies.
Falcon hoods are wide canopies, typically 900mm or 1100mm, styled to match the range cooker beneath them. The general method, filters out, soaked flat, then the impeller housing behind them, is on our rangehood cleaning guide.
The duct was probably specified for something smaller
The most common finding on a Falcon canopy is not the hood at all.
These are usually fitted during a renovation, into a kitchen that previously had a conventional 600mm hood, and the duct run frequently stays exactly as it was. A 1100mm canopy is then asked to move air through a duct sized for something a third of its width, and the restriction sits at the duct rather than at the fan.
The symptom is a hood that has never quite kept up, from the day it went in, which owners tend to attribute to the appliance. It is worth distinguishing, because cleaning a hood that is duct-limited produces a disappointing result and no amount of filter maintenance changes it.
The check is whether the hood was ever satisfactory. A canopy that used to cope and no longer does has a cleaning problem. One that never coped from installation has a ducting problem, and that is a different trade.
The trim, again
If the canopy is one of the range-styled models sold to match the cooker, it carries the same chrome and brass on its trim rails.
Everything that applies to the Falcon oven applies here: caustic cleaner and strong degreasers dull both metals permanently, metal polish will not recover an etched surface, and lacquered brass is made worse by polishing. Clean the trim by hand with warm soapy water and a separate cloth from the one used on the filters.
The stainless around it is worked along the brushed grain, never across it. On a 1100mm canopy at eye level, swirl marks are visible from the other side of the room in a way they are not on a small appliance.
The ducting was probably specified for something smaller
A common finding on these installations is that the duct run was sized for a conventional hood and a much larger canopy was fitted above it during a renovation. The restriction is then at the duct rather than at the fan, and no amount of filter cleaning addresses it.
If a Falcon canopy has never kept up with the range, that is worth investigating before assuming the hood is at fault.
What actually goes wrong
Quarterly servicing on a hood doing double the work.
Dulled trim, from a shared cloth.
Swirl marks on a wide canopy, from cleaning across the grain.
A duct sized for a smaller hood.
Should you do it yourself?
Do it yourself for the filters, on a six-weekly rhythm.
Get someone in for the impeller housing, for trim that has begun to dull, and for a canopy wide enough that doing it properly means an hour with your arms above your head.