Split System Installation in Williamstown

A 4 by 5 metre bedroom with a 2.4 metre ceiling holds 48 cubic metres of air. The same room with a 3.3 metre Victorian ceiling holds 66 cubic metres, nearly forty percent more, and a split system has to condition all of it. Warm air also stratifies above head height in a tall room, so a unit that satisfies its thermostat may leave the occupied zone cool.

That is why we size Williamstown rooms on volume rather than area, and why head placement and fan settings matter more here than in a post war house. A large living room with a decorative ceiling and a bay window regularly needs 7.1kW where an estate room of the same footprint takes 5.0kW.

Solid double brick has thermal mass, which is genuinely useful. It takes a long time to heat and a long time to cool, so a Williamstown period home stays comfortable through a short hot spell better than a lightweight modern build. What it does not have is insulation, and through a week of forty degree days that mass becomes a heat store that works against you.

It also affects installation. Core drilling through solid double brick for the pipe penetration is slower and dirtier than through brick veneer, and it has to be done in a position that does not compromise the fabric or land in the middle of a heritage detail. We plan the penetration at the quote, not on the day.

Heritage overlay controls concern what is visible from the public realm. An outdoor condenser on a street facing wall of a Nelson Place terrace is exactly the sort of thing they exist to prevent. In practice this is a siting problem rather than a barrier, and it is solved at the design stage.

The good positions are rear yards, side returns behind the front building line, and on later additions rather than original fabric. Narrow heritage frontages with rear laneways sometimes leave only one workable spot, which is when a multi head system serving several rooms from a single outdoor unit becomes the answer. We will tell you which category your house is in before quoting.

Williamstown is a bay suburb. Salt reaches outdoor equipment, particularly toward Point Gellibrand, Williamstown Beach and The Strand, so we specify corrosion protected condenser coils and stainless or galvanised mounting hardware here as standard.

Installed cost runs $2,500 to $7,500 depending on capacity and head count, with additional cost for long pipe runs, upper floor heads and difficult core drilling. Victorian Energy Upgrades discounts come off the invoice directly, with no income test, on properties at least two years old and with a $200 including GST minimum customer contribution. Announced changes commence 30 September 2026 and amounts are confirmed at quote.

Refrigerant work requires an ARC licence and the electrical connection requires a licensed electrician issuing a Certificate of Electrical Safety. We hold REC 37223 and do both parts ourselves, which is what manufacturers require before honouring a warranty claim. Our own workmanship is guaranteed for 12 months on top of the equipment warranty.

One further heritage note. Period homes here often have wiring and boards that have been added to rather than replaced, and each split needs its own dedicated circuit and isolator. We test the board and the main earth before adding circuits, and any remedial work appears as a separate line rather than a surprise at the end.