Italian-engineered Maxa and Immergas hydronic heat pumps for Melbourne homes — one all-electric unit for winter heating and silent summer cooling, 60–75% cheaper to run than gas. Designed and installed from our Laverton North showroom.
ImmergasSimeThermaSkirt™For Melbourne's long, cold winters, heat pump hydronic heating is now the lowest-running-cost way to heat a home — and the only system that reverses to give you silent chilled-water cooling in summer. A hydronic heat pump replaces the gas or electric boiler in your system, driving the same radiators, underfloor loops and fan coils with all-electric, refrigerant-cycle efficiency. With a heating COP of 3.5–5.5, every 1 kW of electricity becomes 3.5–5.5 kW of heat — roughly 60–75% cheaper than gas at 2026 tariffs, and near-zero with rooftop solar PV.
AHHAC is an authorised supplier of all three major hydronic heat-pump brands — Maxa i-290 (R290), Maxa i-32V5 (R32) and Immergas Magis — so the Melbourne recommendation is genuinely independent. See how they compare in our Maxa vs Viessmann vs Immergas breakdown.
Melbourne carries roughly 1,500 heating-degree-days and a −1 °C design temperature — about double Sydney's load. That means the heat pump has to be sized correctly for the coldest week, not the average. For the coldest Melbourne-fringe suburbs (Macedon, Daylesford, the Dandenongs, Mornington foothills) we often spec the Immergas Magis Hercules Pro hybrid, which switches automatically to a condensing gas backup when the heat-pump COP drops below economic. Pair the heat pump with hydronic underfloor heating or panel radiators and AHHAC will run a heat-loss calculation before quoting.
Last updated 20 June 2026 · AHHAC