From simple per-room thermostats to whole-home zoned smart controllers — the brain of your hydronic system.
Hydronic heating thermostats control each zone's temperature and schedule by opening and closing manifold actuators or valves, telling the boiler or heat pump when to run. The best set-ups combine per-room thermostats with weather compensation, which trims water temperature on milder days so underfloor stays in its efficient 35–45 °C band, plus app control through Google, Apple or Alexa. AHHAC designs and commissions hydronic controls, including BACnet and Modbus for commercial sites, across Sydney, NSW, VIC, QLD & ACT.
Reviewed by the AHHAC Technical Team — licensed plumbers & hydronic engineers, NSW Lic 262528C.How we write & review
The control system is what turns a hydronic network into a comfortable, efficient home. Get the controls right and the system runs itself; get them wrong and you'll spend years fighting it.
We design control schemes around your living patterns: per-room programming, weather compensation, hot-water priority, holiday modes, and remote app access.
We integrate with Google Home, Apple HomeKit and Amazon Alexa. The major boiler/heat pump manufacturers (Maxa, Bosch, Mitsubishi) all have smartphone apps — we'll set them up at handover.
For larger commercial systems, we build BMS-compatible controls (BACnet, Modbus) that integrate into your facility management dashboard.
The same heat pump and the same pipework can cost noticeably more to run depending on how the controls are set up. These are the placement rules and settings we apply at commissioning, and the ones we most often correct when we take over another installer's system.
At handover we walk you through what each zone is set to and why. If an existing system short-cycles, runs hot or leaves some rooms cold, the controls are the first thing we check, before anyone touches the boiler or heat pump.
See the Maxa thermostat range, our valves and controls, how controls work with hydronic underfloor heating, and our Canberra running-cost guide.
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 design thermostats & controls from a room-by-room heat-loss calculation, install it with our own licensed plumbers to AS/NZS 3500 (plumbing) and AS/NZS 5601 (gas), commission and document it, and service it for the life of the system. Nothing is subcontracted out.
Yes — modern hydronic controllers integrate with Google Home, Apple HomeKit and Amazon Alexa. The major boiler/heat pump manufacturers (Maxa, Bosch, Mitsubishi, Viessmann ViCare) all have smartphone apps we set up at handover.
Yes — that's one of hydronic's biggest advantages over ducted. Per-room thermostats with individual set points and schedules, all coordinated through a central controller. Bedrooms cool, living areas warm, bathrooms hot — all running off one boiler or heat pump.
We integrate with BMS systems via BACnet and Modbus protocols — letting facility managers see and control hydronic plant from their existing building management dashboards. Energy monitoring per zone included.
"AHHAC delivered our 22-zone underfloor system on time, on budget and to spec. The crew were tidy, the documentation was thorough, and the commissioning was textbook."
"We've worked with AHHAC for 17 years. They've installed and serviced our hot water plant across three commercial buildings — and they pick up the phone on weekends."
"Three mobs quoted us; AHHAC's design was the only one based on a proper heat-loss calculation. The system runs beautifully — the others would've been oversized and expensive."