Ducted Air Conditioning Jannali

Local knowledge

Ducted in Jannali homes

Ducted in Jannali depends on which side of the ridge you are on. The original 1950s and 60s cottages along the station streets have steep pitched tiled roofs with a generous cavity, so a full-size fan coil sits comfortably above the hallway and rigid ducting reaches every room; we zone them as front bedrooms and rear living, with a third zone for any extension out the back. The split-level homes on the side streets need more thought. Each half-floor gets its own zone, the fan coil goes in whichever cavity connects the levels, and the return air is placed on the upper level where the warm air collects, so the system is not pulling cool air off the lower floor and sending it back up. Renovations that add a storey get ducted designed into the new roof from the plans.

Down toward Bonnet Bay the 1970s waterfront homes are the ones that need care. Flatter roofs mean a slimline fan coil or a bulkhead on the lower level, and with the garage under the house the condenser usually sits on a side-wall bracket or a small terrace rather than on the ground, with the longer pipe run allowed for in the fixed price. The Woronora is estuary, so a standard outdoor unit with an annual coil clean is enough; it is the humid, still evenings rather than salt that shape the design, and a properly sized system spends a good part of a summer night dehumidifying. West-facing decks and glass get slightly larger supply ducts. Ducted running cost here is roughly $1–$2 per hour whole-home, and with the bedroom zone alone running overnight it sits at the low end of that.