Kellyville, in brief
Semi-rural, then suburban
The first 40-hectare subdivisions were made in 1884, and Kellyville stayed semi-rural for most of the 20th century. About 900 homes went up around Acres Road from the 1960s to the 1980s. Its named estates include Duncraig, Highlands and Elizabeth Macarthur.
Close neighbours
Most newer homes are built at a high house-to-land ratio, leaving smaller yards and gaps between houses. There are also townhouses along Kellyville Shopping Plaza.
Big, and mostly mortgaged
At the 2021 Census, homes averaged 4 bedrooms. 52.2% were owned with a mortgage, 25.3% outright and 19.2% rented.
Zone 6, well inland
Kellyville is 36 km north-west of the CBD in The Hills Shire, which the ABCB map shades zone 6. Sea breezes don't reach that far, and AdaptNSW says Western Sydney averages 10 to 20 days a year above 35 degrees.
The side passage problem
Under the NSW exempt development standards, as Northern Beaches Council summarises them, a home air conditioner has to sit at least 450mm from each lot boundary. At off-peak times it mustn't be audible in a neighbour's habitable rooms. On a narrow Kellyville block, the side passage next to the neighbour's bedroom window can fail both.
The ACT Government guide adds that an outdoor unit needs fresh air reaching it and room to service it, and shouldn't be boxed in. A ducted outdoor unit is large, so settle its spot before the quote, not on installation day. Good options are often the back corner of the yard or a side wall away from bedrooms, even if the pipe run is longer.
Zoning a four-bedroom house
A four-bedroom Kellyville house is a typical ducted job. Zoning is what keeps it efficient: ActronAir says dampers in the ductwork open or close to send air to each zone. Living areas by day and bedrooms by night is the minimum. ActronAir also says systems lose cooling capacity above 35 degrees, so ask what the system delivers then, in writing.
Before you sign for ducted in Kellyville
- Where exactly will the outdoor unit go, and is it at least 450mm from the boundary?
- How loud is it, and which neighbour's window is closest?
- What's the capacity at 35 degrees, and the heating output on a cold morning?
- How many zones, and which rooms are in each?
- Does the switchboard need an upgrade, or 3-phase power?
What we'd do
If we were in Kellyville
We'd pick the outdoor unit's spot first, away from the neighbour's bedrooms and at least 450mm off the boundary, and only then compare ducted quotes. We'd want at least two zones and the hot-day capacity in writing. And we'd want a ducted specialist who does Hills houses every week. Licence-checked installers near Kellyville who do this work can see your job, and only the one who takes it gets your details. Where no Kellyville-area installer takes it within 48 hours, it may also be seen by installers elsewhere in NSW.
