Sydney's hydronic heating, cooling and hot water specialists since 1998. Hydronic heat pumps, electric and gas hydronic boilers, in-slab and screed underfloor heating, panel radiators and hydronic cooling — designed, installed and serviced from our Punchbowl showroom.
Hydronic heating in Sydney typically costs $28,000–$55,000 installed for a 200 m² home with a heat pump and underfloor heating, or $18,000–$32,000 for a radiator retrofit driven by a condensing boiler. Sydney's mild winters (a 6 °C design temperature) suit reversible heat pumps that also deliver chilled-water cooling. AHHAC designs, installs and services systems across Greater Sydney from our Punchbowl showroom, with a fixed-fee quote back within 24 hours of the site visit.
Reviewed by the AHHAC Technical Team — licensed plumbers & hydronic engineers, NSW Lic 262528C.How we write & review
Sydney is a mild-winter, warm-summer climate — which is exactly why reversible hydronic heat pumps dominate our Sydney installs: one outdoor unit covers gentle winter heating and silent chilled-water summer cooling. Heating-degree-day load is modest (~700 HDD base 18 °C), so a well-sized heat pump runs at very low annual cost, especially paired with rooftop solar PV.
AHHAC has been installing hydronic heating in Sydney since 1998 — across heritage terraces in Surry Hills, beach-side rebuilds on the Northern Beaches, architect-designed new builds on the North Shore and renovation projects from the Inner West out to the Hills District. Our Sydney showroom is in Punchbowl NSW 2196, with same-day stock of every major component and a direct line on 1300 76 53 39.
We design every Sydney hydronic heating system around the specific home — heat-loss calculation, zone plan, energy-source matchup, and a fixed-fee quote back within 24 hours of your enquiry. Sydney's mild winters and warm summers make the city a perfect fit for reversible heat pump hydronic heating systems that deliver both winter heating and chilled-water summer cooling from a single outdoor unit.
Sydney hydronic underfloor heating is our most popular install for new builds, with in-slab pipework laid before the pour. For renovations and retrofits we specify hydronic radiators — European panels, designer towel rails and cast-iron columns sized to each room's heat-loss.
Sydney has more hydronic installers than any other Australian city — but most are renovation plumbers running side jobs. AHHAC is a dedicated hydronic specialist with our own design team, full European parts inventory and a dedicated service department. We don't subcontract.
Every Sydney install carries our workmanship warranty on top of the manufacturer cover, and we offer annual service contracts that keep the manufacturer warranty valid. We're authorised installers for Maxa, Immergas Magis, Viessmann and Sime — five manufacturer accreditations in total.
For Sydney homes pursuing all-electric or Net Zero certification, we pair hydronic heat pumps with rooftop solar PV to achieve near-zero net annual energy cost across heating, cooling and hot water. The hydronic distribution network has a 30+ year design life — only the outdoor unit needs replacement at the 12-15 year mark.
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.
Every Sydney system is designed from a room-by-room heat-loss calculation and installed by our own licensed plumbers and hydronic engineers to AS/NZS standards — never subcontracted out. We hold NSW plumbing licence 262528C and carry full insurance, and we stand behind every install with ongoing local service.
Every Sydney project starts with a heat-loss calculation and a fixed-fee design. We size each system to your building, your climate and your living patterns.
Italian-engineered Maxa and Immergas Magis hydronic heat pumps. Heating COP 3.5–5.5, R290 and R32 options. Reversible for summer cooling.
Electric hydronic boilers (Heatrae Sadia, Stiebel Eltron) for in-floor heat, plus Sime, Viessmann and Bosch condensing gas boilers. 92-98% efficiency.
In-slab and in-screed hydronic underfloor heating with PEX-A pipework. 30+ year design life, per-room thermostatic zoning, stone/tile/timber compatible.
European panel radiators, designer towel rails and cast-iron columns. Zehnder, Bisque, Stelrad, Delonghi. 15-25 min warm-up, TRV per-room control.
Chilled-water underfloor and fan-coil cooling — silent, allergen-free, paired with reversible heat pumps. Ideal for new Sydney builds.
Industrial reversible chillers and heat pumps for Sydney hotels, hospitals, schools and strata. 73–192 kW heating, hot water to 78 °C.
Most of the work in a Sydney hydronic project happens before a pipe goes in. The city's housing stock is unusually mixed — Victorian terraces with party walls, Federation and Californian bungalows on suspended timber floors, 1960s brick walk-ups under strata, and slab-on-ground new builds — and each one changes where the plant can sit, how pipework reaches each room, and who needs to sign off.
Timing matters more than most people expect. Enquiries jump with the first cold snap, and design slots and install dates fill quickly through autumn. If you want the system running by June, book the site visit over summer: the heat-loss calculation and fixed-fee design come back within 24 hours, and a whole-home radiator retrofit is typically one to three days on site. New-build underfloor heating runs to your builder's programme instead.
On energy source, most Sydney homes we design now go all-electric, because a reversible heat pump suits a mild climate and covers summer cooling as well. Gas still makes sense where a house already has a sound condensing boiler and a radiator network worth keeping. Every Sydney crew, van and spare part is dispatched from Punchbowl, so annual servicing and warranty work come from the same team that installed the system, whether you are in Penrith or on the Northern Beaches.
Written from on-site experience by the AHHAC Technical Team.