Heat pump hydronic heating Melbourne — all-electric heating & cooling.

Many Melbourne enquiries are not for new systems at all. They come from homes with a gas boiler and panel radiators installed decades ago, where the owner wants to get off gas without losing the hydronic comfort they love. Converting to heat pump hydronic heating in Melbourne rarely means starting again: in most cases the pipework and radiators can stay. The real work is checking that they will perform with a heat pump, which heats water to a lower temperature than the gas boiler it replaces.

What we check before quoting a conversion

• Every radiator against its room. Older systems were sized for very hot water. We re-run the heat-loss calculation room by room and compare it with each radiator's output at heat-pump flow temperatures. Usually only a few rooms, typically big living areas or rooms with a lot of glass, need a larger or additional panel.
• The water inside the system. Old circuits collect sludge and magnetite that can clog a new heat exchanger. We test the water and, where needed, carry out a central hydronic heating flush and re-dose with inhibitor before the heat pump is connected.
• Buffer tank and controls. A buffer tank stops short-cycling when only one or two radiators are calling for heat, and thermostatic valves let each room settle at its own temperature.
• Electrical capacity. We confirm the switchboard and supply can take the new load, and whether your solar inverter can cover part of it.
• Insulation gaps. Ceiling insulation and draught-sealing in an older weatherboard or Victorian home are often the cheapest way to shrink the heat pump you need.

Once the heat pump is commissioned and the old boiler removed, owners whose cooktop and hot water are already electric can abolish the gas connection altogether, which ends the daily supply charge. With Victoria no longer allowing new gas connections for most new homes, an all-electric hydronic system is also increasingly what buyers expect.

Our guide to retrofitting hydronic heating covers the wider process, and the Immergas Magis hybrid remains an option for exposed fringe sites where you want gas backup on the coldest mornings.