We supply only what we'd install in our own homes — Italian-engineered Maxa heat pumps, Australian-made Rheem hot water, German-engineered Stiebel Eltron, Japanese-engineered Mitsubishi and Rinnai.
Hydronic heating products in Australia fall into four groups: the heat source (heat pump or boiler), the emitters (radiators, underfloor, fan coils or skirting), the distribution (pipe, valves, pumps and expansion vessels) and the water treatment that protects it all. AHHAC supplies and installs every group, including Maxa and Immergas heat pumps, Viessmann boilers and IMAS radiators held in Australian stock, matched to a room-by-room heat-loss calculation, with heat-pump COPs of 3.5–5.5.
Reviewed by the AHHAC Technical Team — licensed plumbers & hydronic engineers, NSW Lic 262528C.How we write & review
We're an authorised supplier of premium European brands — Italian-made Maxa heat pumps, German-made Viessmann boilers and DHW heat pumps, and the full IMAS radiator catalogue, which we hold in Australian stock for fast supply and install. Each product is tested for Australian conditions and backed by full manufacturer warranty.
Panel · Column · Towel Rail
Inverter Monoblock Heat Pump
Inverter Monoblock Heat Pump
Magis Pro · Audax · Hercules Pro
R290 DHW Heat Pump
Gas Condensing Boiler
From boilers to radiators, hot water tanks to MVHR systems — we supply and install only what we'd install in our own homes.
Mitsubishi, Daikin, Fujitsu, Panasonic — split, multi-split, ducted.
Sime · Bosch · Vaillant · Rinnai · Viessmann — 18 kW residential to 200+ kW commercial.
Italian-engineered Maxa and Immergas Magis heat pumps for hydronic heating, cooling and hot water.
Italian-engineered air-source heat pump range — single and three-phase, Hunt Heating Australia.
Italian IMAS steel panel, flat panel, Klassic column & Alubain towel-rail radiators — held in Australian stock.
De'Longhi (first-preferred) and IMAS Group panel, tubular and column radiators.
Wall, bulkhead and ducted-cassette fan coils for fast heating and chilled-water cooling.
Zehnder, Stiebel Eltron, Mitsubishi — up to 90% heat recovery.
Airmust, CRA and My House Pro wire controls for fan coils, radiators and cassettes.
Manifolds, mixing valves, zone and balancing valves from Barberi (est. 1954).
Multilayer PEX-AL-PEX pipe and flame-free press-fit fittings.
High-efficiency ECM circulating pumps — up to 80% less power than fixed-speed.
Expansion tanks for heating, cooling, potable and solar — correctly sized and pre-charged.
Brazed flat-plate exchangers for pool, solar-thermal and circuit isolation.
Inhibitors, cleansers, biocides and antifreeze — stops magnetite sludge and corrosion.
DHW cylinders, buffer tanks and thermal stores. Single and twin-coil.
Stratified thermal stores, DHW tanks and heat-pump hot water — home to commercial.
Industrial chillers + reversible heat pumps. 73–192 kW heating, hot water to 78 °C.
Apricus, Solahart, Rheem — flat plate and evacuated tube collectors.
Hydronic wood and pellet boilers with back-boiler integration.
Distributed in Australia by Next Cycle — one of the country's leading HVAC and water solution suppliers — and installed and serviced by AHHAC across NSW, VIC and QLD.
In stockThe full IMAS Group radiator catalogue — steel panel, flat panel, Klassic tubular column and Alubain aluminium towel warmers. Tested to EN442 with a 10-year guarantee, held in Australian stock for fast supply and install.
Italian-engineered hydronic heat pumps for heating, cooling, hot and chilled water. Available in R290 (i-290) and R32 (i-32V5) refrigerants.
German-engineered DHW heat pumps and gas condensing boilers — industry-leading efficiency, smart-home control, comprehensive warranties.
Australia's leading supplier of innovative and sustainable heating, cooling, hot water and chilled water solutions. Distributor of Viessmann, Maxa, Aquatechnik, Barberi and Imas Group.
We get a steady stream of calls from homeowners who bought a heat pump or a pallet of radiators online and now need someone to make it all work. Sometimes it can be rescued. Often the parts were never designed to work together: a heat pump chosen on price paired with radiators sized for a gas boiler, plain PEX letting oxygen into a steel-panel system, or a pump big enough for a hotel humming away in a three-bedroom house. That is why we do not sell over the counter. Every product we supply is specified from a room-by-room heat-loss calculation and installed by our own licensed plumbers and hydronic engineers.
Whether you are comparing our quote or someone else's, check that each of these is named, sized and accounted for:
If a quote lists only the big-ticket items, the smaller components are either missing or will turn up later as variations. Those smaller parts decide whether a system with a 30+ year pipe life runs quietly for decades or needs a call-out every winter.
Brand matters less than fit. Our Maxa vs Viessmann vs Immergas comparison explains how we choose a heat source, and we hold the IMAS radiator range in Australian stock so emitters are not held up by a European import wait. For a realistic budget across the whole package, our hydronic heating cost guide shows where the money goes, and how hydronic heating systems work covers the design basics.
Written from on-site experience by the AHHAC Technical Team.
AHHAC's in-house design and service team — licensed plumbers and hydronic engineers (Lic 262528C) who have designed and installed 2,400+ hydronic heating, cooling and hot water systems across Australia since 1998.
We only specify equipment after a heat-loss and system-compatibility check, then supply, install and commission it with our own licensed plumbers to AS/NZS 3500 (plumbing) and AS/NZS 5601 (gas), register the manufacturer warranty and service it for the life of the system.
Authorised supplier of Maxa heat pumps (Italy), Viessmann boilers and DHW heat pumps (Germany), Rheem and Rinnai hot water (AU/Japan), and ThermaSkirt™ skirting heating (UK). We also install Bosch, Mitsubishi, Daikin, Stiebel Eltron, Apricus, Sanden, Reclaim, Vaillant, Worcester, Zehnder, Bisque and others as project requirements dictate.
We're an installation specialist, not a retailer — every product we supply comes with our design, install and warranty service. We don't sell over-the-counter. The trade-off is that everything we put in is engineered to your home and backed by our service team for the lifetime of the system.
Yes — our service team works on every major hydronic and plumbing brand sold in Australia in the last 25 years. We can take over warranty service contracts where the original installer has stopped responding. Pricing is based on the call-out and parts; manufacturer warranty (where valid) covers free replacement parts.