Elevated, windier, and the sizing follows the view
Split System Installation in Highton
Highton was rural until the mid 1950s and has been building ever since, so the housing runs from 1960s brick veneer through to new work on the north west edge. The build year tells you more about the switchboard here than anywhere else in Geelong.
- Highton 3216
- Powercor network
- REC 37223
The short answer
Highton 3216 sits high on the Barrabool Hills, which makes it noticeably windier than the flat suburbs and changes where a condenser goes and how it is mounted. Homes on the escarpment have large west and north facing glazing over the Barwon valley, so living areas frequently need 7.1kW rather than 5.0kW. The stock runs from 1960s brick veneer to current building, so switchboard capacity tracks the build year. Powercor is the distributor.
From one of our jobs
Multi-head systems share one outdoor unit
Photographed on site in Melbourne’s west. REC 37223.
The other local factor is the elevation. Sitting up on the Barrabool Hills means very little overshadowing and a lot more wind than the plain below, and wind is not neutral for an outdoor unit. It affects where the condenser goes, how it is fixed and how the system behaves on a cold morning.
Wind exposure and the condenser
A condenser exposed to a steady wind straight into its discharge face has to work harder to move air across the coil, and on an elevated Highton block the prevailing wind is not something you can ignore. Siting the unit so the discharge is not fighting the wind is free at design stage and impossible to fix afterwards.
Mounting matters too. A unit on a ground pad is stable regardless. A unit on a wall bracket at an exposed corner takes wind load through the fixings, so the bracket and the fixing into the wall get specified for the position rather than pulled off the van as standard.
Face it away
Discharge into the prevailing wind makes the fan work against itself. A quarter turn at design stage solves it.
Bracket specification
Exposed corners take real wind load. The bracket and its fixings are chosen for the position, not by habit.
Winter defrost
A wind exposed coil frosts more readily on a cold damp morning, so a sheltered position genuinely helps in July.
Escarpment homes, glazing and room volume
The houses along the escarpment were built for the view, which means large areas of west and north facing glass over the Barwon valley and often a raked or cathedral ceiling in the living area. Both push the capacity up, and both are invisible in a floor area calculation.
A living and dining area of 40 square metres with a flat 2.4 metre ceiling and modest windows is a 5.0kW room. The same footprint with a raked ceiling and four metres of west facing glass is 7.1kW or more. We measure the glass and the ceiling before putting a number on it.
3.5kW
A standard Highton bedroom in 1970s or 1980s brick veneer with a re-batted ceiling.
5.0kW
A conventional lounge with a flat ceiling and moderate glazing on the older flat blocks.
7.1 to 8.0kW
Open plan living with a raked ceiling and large west facing valley glazing, which is the common escarpment case.
The switchboard tracks the build year
Sixty odd years of continuous building means the stock is genuinely mixed, and here the board age follows the build year more reliably than anywhere else in the region. A 1965 house on Barrabool Road and a 2018 house on the north west edge are two different electrical conversations.
Older boards frequently have no spare ways for the dedicated circuit each head needs, and homes on the escarpment often have long runs from the street to the meter position, which is the single biggest cost variable when supply work is involved.
1960s and 70s
Expect an original board, limited spare ways and an upgrade quoted as its own line at $800 to $3,500 or more.
1990s onward
Modern protection and usually spare capacity, so the circuit at $350 to $800 is generally the whole electrical scope.
Long service runs
Escarpment blocks can put a long distance between the street and the meter, which shows up in any supply work.
Single head or multi head on a Highton block
The 1960s to 1980s blocks have real side access, so there is room for more than one outdoor unit and single head systems stay on the table. That is worth using, because singles run at their best efficiency per room and one failure does not cost you the whole house.
The newer north west subdivisions are different. Garages run to the boundary, the side path narrows, and a single viable condenser position pushes those homes toward a multi head. That is a fair answer there and an unnecessary compromise on an older block.
Older streets
Generous side access means separate systems per room, which is usually the better long term answer.
New subdivisions
Garage to boundary leaves one narrow path, so a multi head from one outdoor unit is often the practical solution.
Failure mode
A single head failure costs one room. A multi head failure costs every room on that outdoor unit.
Gas replacement, cost and how we schedule
A lot of Highton homes run ducted gas installed in the 1980s or 90s and now due for replacement. Reverse cycle returns 3 to 4 units of heat per unit of electricity against 80 to 92 percent conversion for gas, which is roughly 28 to 36 cents an hour against 50 to 72 cents, or about $200 to $450 a year.
Victorian Energy Upgrades discounts apply to the invoice directly, no income test, property at least two years old, $200 including GST minimum contribution, and the program changed on 30 September 2026. Highton is about 65km from Altona, so we book work here in planned blocks and give you a week rather than an hour.
Room by room
Splits in the rooms you use often beat a whole house ducted replacement on both installed cost and running cost.
Inland spec
Highton is not coastal, so standard condensers are appropriate and the marine hardware we use on the coast is not needed.
Licensing
ARC licensed refrigerant work, REC 37223 electrical, and a Certificate of Electrical Safety issued on completion.
On the ground
Highton specifics
- The elevated position on the Barrabool Hills makes this suburb windier than the flat parts of Geelong, so condenser orientation and bracket specification matter more here than they do down on the plain.
- Escarpment homes were built for the valley view, which means large west facing glazing and raked ceilings. Both lift the capacity well above what the floor area suggests.
- Sixty years of continuous building means the switchboard age tracks the build year closely, so a 1965 house and a 2018 house need different electrical scopes.
- Long runs from the street to the meter position are common on the escarpment blocks and are the biggest single variable if supply work is required.
Licensed and accredited work by a local team. Read about Pivot Trade Services or see recent jobs across the western suburbs.
Answers
Highton questions
Enough to design around. A condenser discharging straight into the prevailing wind moves less air across its coil, and a wind exposed coil frosts more readily on a cold damp morning. Orientation costs nothing at design stage. On an exposed corner it also means the bracket and fixings get specified for wind load.
Because of the view. Escarpment homes here have large west and north facing glazing over the Barwon valley and often a raked ceiling, which raises both the solar gain and the room volume. Neither appears in a floor area calculation. We measure the glass and the ceiling height before selecting a capacity.
Often not without work. Boards of that vintage in Highton usually have no spare ways left, and each indoor head needs its own dedicated circuit and isolator. We test the board and main earth at the quote, then price the circuit at $350 to $800 and any board upgrade separately at $800 to $3,500 or more.
On the older Highton blocks, separate systems. There is genuine side access for more than one outdoor unit, and singles run more efficiently per room and fail one at a time. On the newer north west subdivisions where the garage runs to the boundary, a multi head from one position is often the only workable answer.
For most Highton homes, yes, and usually cheaper than a like for like ducted replacement. Reverse cycle costs roughly 28 to 36 cents an hour to heat a room against 50 to 72 cents for ducted gas, around $200 to $450 a year. Dropping gas entirely also removes the daily supply charge.
Highton is about 65km from our Altona workshop, so we schedule Geelong work in planned blocks rather than attending on demand. In practice that means a site visit in a nominated week, then an installation date confirmed once the equipment is in. We do not offer same day or emergency attendance here.
Other work we do in Highton
- Electrician in HightonSixty years of building, and a hill that changes the spec
- Solar installation in HightonThe best yield in Geelong, and the most wind
- Home battery in HightonGood generation, long cable runs
- EV charger in HightonThe build year decides the board, and the board decides the price
- Heat pump hot water in HightonBoard vintage tracks the build year here
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