Heating and cooling in Drouin
Heating and cooling in Drouin: sizing ducted reverse cycle for new builds, adding zones, the first service and the all-electric rule for new homes from 2027.
In Drouin, a lot of heating and cooling work is on homes that are only a few years old or still being built: choosing and sizing a ducted reverse cycle system, adding or rearranging zones, and booking the first service once the builder’s system has done a couple of seasons. New homes with a building permit approved from 2027 on will be all electric, which makes reverse cycle the default. A Drouin enquiry lodged on this site is handed to an independent provider in the area, who prices and completes the job directly with you.
How fast is Drouin growing?
Drouin has 15,287 residents and is Baw Baw Shire’s second-largest town, with about 27% of the shire’s population, according to the council fast facts. Between 2021 and 2022 its population grew by 4.11%, faster than Warragul and well ahead of regional Victoria as a whole. Postcode 3818 also takes in Drouin East, Drouin South and Drouin West, per Australia Post. With that pace of building, plenty of Drouin owners are living with whatever heating system the builder chose, and only find out how well it suits the house after a winter or two.
What heating and cooling jobs come up in newer Drouin homes?
- Choosing the system for a house still under construction. Owners often want to upgrade from the builder’s standard offer before handover.
- Adding zones. A house built with a single zone may heat the whole floor when only the living area is in use. A zone controller and motorised dampers can split it.
- Topping up a system that struggles. If the builder’s unit was undersized for an open-plan living area with high ceilings, a split in that room or a larger ducted unit may be needed.
- The first service. Filters, coils, drain lines and outdoor unit clearance all need checking after the first couple of years, and the warranty terms may require it. The heating and cooling servicing page covers what that visit includes.
- Cooling for a west-facing living area. Hot afternoons hit large glass areas hard, and that is often what prompts the call.
Which setup suits a new Drouin home?
| Setup | Good fit when | Questions for the provider |
|---|---|---|
| Ducted reverse cycle, two or more zones | Whole-house heating and cooling, roof space available | How many zones, where the return air grille goes, outdoor unit noise near the neighbour’s fence |
| Ducted with individual room control | Bedrooms used at different times | Extra cost of more dampers and controllers, wiring to each room |
| Split systems room by room | Smaller homes or a staged budget | How many outdoor units fit on the side setback, pipe routes on brick veneer |
| Builder’s system plus one split | Living area undersized | Whether the split and ducted system will fight each other on thermostats |
The ducted reverse cycle page explains capacity, zoning and outlet layout in more detail.
What does the 2027 all-electric rule mean in Drouin?
From 1 January 2027, new homes in Victoria must be built all electric. AusNet’s summary of the rules says a home whose building permit is approved before 31 December 2026 may still be able to connect gas. If you are building in one of Drouin’s newer estates, check your permit date with your builder before you decide on heating. Existing homes with working gas appliances can keep using them and can still have them repaired.
How should a new home’s system be sized?
Size is where builder-supplied systems most often fall short. The Victorian Energy Upgrades guidance says to have the installer visit to check what size suits the property, notes that an oversized system can use more energy and cost more to run, and recommends asking for quotes that list heating and cooling capacity and outdoor noise levels.
On a Drouin new build, a careful provider will work from the plans or a walk-through and look at:
- Floor area of each zone and ceiling height, especially raked or high ceilings in the family room.
- Glazing area and orientation. Big sliding doors facing west or north change the cooling load.
- Insulation in the ceiling and walls, which the builder’s specification sheet should list.
- Roof pitch and truss layout, since the indoor unit and ducts need a clear path and a safe place to stand for future servicing.
- Switchboard space and whether a dedicated circuit is already allowed for.
- Outdoor unit position. Narrow side setbacks on estate lots can leave little room, and noise near a bedroom window matters.
A provider who does this properly will not offer a capacity figure until they have seen at least the plans.
What do Drouin homeowners pay?
As a published guide, a ducted reverse cycle system for a three-bedroom house in Gippsland is estimated at $10,500 to $17,500, for a standard installation with no electrical upgrade. A ducted system service is listed at $210 to $580 per system in a Melbourne guide checked in October 2026. These are reference ranges only. If your house is still on the plans, request a Drouin ducted system quote so a provider can price from the drawings.
What licences and paperwork should you expect?
The technician who connects the refrigerant pipes must hold a refrigerant handling licence from the Australian Refrigeration Council. Electrical work must be done by a licensed electrician, and you should receive a Certificate of Electrical Safety. On a new build, ask whether the heating installer is working under the builder or contracting with you directly, since that changes who answers for defects.
How does Drouin differ from towns nearby?
Drouin has a higher share of new housing than Warragul, where older gas systems are more common; the Warragul page deals with that. Further west, Longwarry is smaller and the jobs tend to be single upgrades rather than whole-house installs, as the Longwarry page explains. In Drouin the most useful thing an owner can bring to an enquiry is the building plans.
Next step
Tell the provider whether the house is built or still on the plans, the estate or street, the number of bedrooms and living areas, ceiling heights, and the system you have now (if any). If you are building, include your building permit date and attach the floor plan. If the system is existing, add the model number from the indoor unit and a photo of the outdoor unit. Then start your Drouin heating and cooling enquiry.
Frequently asked questions
- Can I change the builder's heating system before my Drouin house is handed over?
Often you can, by asking the builder for a variation or by arranging the heating yourself after handover. A variation keeps one contract but may cost more; arranging it yourself gives you more choice but means coordinating access and warranty. Ask your builder what their contract allows before you get quotes.
- How many zones does a typical Drouin family home need?
Many three or four bedroom houses work well with two zones, one for living areas and one for bedrooms. Larger or double-storey homes, or households where rooms are used at very different times, may suit three or four zones or individual room control. A provider will suggest a layout after looking at the plans.
- Is my new Drouin home's air conditioner still under warranty?
Check the manufacturer's warranty card and the installer's paperwork from handover. Some manufacturers require regular servicing by a licensed technician to keep the warranty valid, so keep receipts from every service. Faults in the installation itself may be the builder's or installer's responsibility.
- Will a ducted outdoor unit be too loud for my Drouin neighbours?
It can be if it sits close to a neighbour's bedroom window on a narrow side setback. Ask the provider for the outdoor unit's sound rating, and discuss positions where the noise is directed away from neighbouring houses. Quiet operation modes on some models can also help at night.
- Does a home in Drouin West or Drouin South count as Drouin for an enquiry?
Yes. Australia Post lists Drouin, Drouin East, Drouin South and Drouin West all under postcode 3818. Give your exact locality and road so the provider can judge travel, as rural parts of these localities can be well out of town.