Hydronic Heating Victoria

Hydronic Heating Victoria

Specialising in SOLAR HYDRONICS via Heat Pumps


Slab Heating

Studies have shown that in-slab heating provides a most enjoyable warming experience!

Fun on the floor!  Living with a warm floor opens up all sorts of possibilities!

Slab Heater

Efficient, Luxurious, Simple:

Used in conjunction with our Air Sourced Cold Climate Hydronic Heat-Pump water heaters, home heating with hydronic (water-filled) heating coils in the slab provides luxurious comfort.

Hydronic Floor heating pipes are laid throughout the concrete slab in loops or circuits, during construction. Each circuit can be controlled independently to heat only the area(s) required. (Groups of circuits can be managed as one 'Zone' and controlled typically by room thermostat)

Warm water is circulated through the system of pipe work, the floor is heated and radiates warmth throughout the house.


How much does it cost?

We specialise in working directly with the home-owner, but we are just as happy to work with Builders and other trades and hydronics specialists. The following is a guide to how much it costs to install a quality home heating system.

Generally, the larger the project the lower the overall cost per square meter.


  • Floorcoils and manifolds can cost on average from $45 to $50 per sqm, supplied & installed

Water Heaters (boilers)

Note: Areas given are approximate for 5 star homes. Please call for sizing confirmation

  • We don't recommend using traditional solar or evacuated tube boosters, as these provide the least input when needed most
  • A natural gas boiler for up to 250sqm slab is approx. $3,800 plus delivery & installation
  • A natural gas Condensing boiler for up to 250sqm slab is approx. $5,000 plus delivery & installation
  • A natural gas Condensing boiler for up to 400sqm slab is approx. $7,000 plus delivery & installation
  • An air-sourced heat-pump system with buffertank, primary & zone circ pumps, expansion sub-system, can cost from approx $65/sqm to over $100/sqm depending on slab size, the larger the slab the lower the cost/sqm.

Geothermal or Air Sourced Heat Pump ?

Use a Hydrocarbon Air Sourced Hydronic Heat Pump!
Invest the GEOTHERMAL groundworks money into solar electricity and get a much better return on investment, and a much more environmentally sound system!

A GEOTHERMAL heat-pump costs about the same as a Cold Climate Air Sourced heat-pump, but you have to add the substantial cost of groundworks . . . .

Instead, use a Skyline Energy Hydrocarbon Air Sourced Heat Pump and invest some of that money saved into Solar Electricty for a much higher return on your investment.

Air Sourced Heat-pumps:


Average system pricing:

includes stainless steel buffertank, 1x primary circulation pump, 1x secondary (zone) pump, and 1x wall thermostat, but does not include delivery or installation:

  • An SX-06 240v, 100Lt buffertank, system for up to 60sqm floor space is about $6,000
  • An SX-08 240v, 100Lt buffertank, system for up to 80sqm floor space is about $6,350
  • An SX-11CCZA 240v, 100Lt buffertank, system for up to 110sqm floor space is about $9,300
  • An SX-13CCZA 240v, 100Lt buffertank, system for up to 130sqm floor space is about $9,700
  • An SX-15CCZA 240v, 200Lt buffertank, system for up to 150sqm floor space is about $11,000
  • An SX-17CCZA 240v, 200Lt buffertank, system for up to 170sqm floorspace is about $11,400
  • An SX-19ZA 240v, 200Lt buffertank, system for about 190sqm floorspace is about $11,700
  • An SX-20ZA 1ph/2ph (240v) system for about 200sqm floorspace is about $13,200
  • An SX-24ZA (1ph/2ph (240v) system for about 240sqm floorspace is about $13,700
V-Models are recommended for higher loads in frost-prone areas:
  • A V20ZA 1ph/2ph (240v) system for about 240sqm floorspace is about $15,000
  • A V25ZA 1ph/2ph (240v) system for about 240sqm floorspace is about $15,500
  • A V30ZA1ph/2ph (240v) system for about 240sqm floorspace is about $16,200
  • A V35ZA1ph/2ph (240v) system for about 240sqm floorspace is about $16,700

Skyline Energy SX-24 Hydronic Heatpump with Owlett Low Noise Fans

ZA Hi-Tech Fan option

Improved airflow and up to 15% higher efficiency compared to the standard fans.
Especially recommended for installations where noise could be an issue, the ZA model with low-noise Ziehl-Abegg "Owlet" fans.


General advice

  • We do NOT recommend using under-capacity Heat-Pumps boosted by GAS/LPG/electric elements, as these "HYBRID" systems may considerably reduce efficiency and increase running costs, instead use the correct sized heat-pump from our extensive range
  • We do not recommend using multiple domestic-type storage tank heat-pumps for hydronics, as these work best with fairly static water - hydronics requires continuous water flow, better suited to co-axial heat exchangers which are more efficient
  • We DO recommend using Solar Electricty to offset heat-pump use!
  • Although an LPG boiler is about the same cost as a natural gas boiler - the LPG operating cost is too high - use air-sourced Heat-Pump (only use LPG if no mains electricity, but beware!
Slab heating quote - email your house plan here

Note: we welcome trade enquiries, so get your builder/hydronics contractor to quote using our systems!

Hydronic Slab Water Heaters

why we don't use solar tubes why we don't use solar tubes



Ask this question of your Solar Hydronics supplier:
Over the heating season, what percentage of the total energy will come from the Solar, and how much from the "back-up" heater ?

For most homes, solar is just not a cost-efficient option for hydronic heating, typically providing only about 25% of the energy required. (unless you have massive water storage - thousands of litres in insulated tanks, to collect and store lots of energy when it available, and deliver it over winter)
Note: The only other exception to this would be if the energy harnessed over summer could be fully utilised for a secondary purpose such as Pool heating. The additional cost of including a solar tube array system may then be justified.

In normal winter conditions, a Cold Climate Hydronics heat-pump will use less energy than the booster required in a solar-boosted GAS/LPG/Electric hydronics system. If you are in a natural gas area, you'll probably just use a straight gas boiler, if no gas use a correctly sized hydronic heat-pump.

We recommend Air-Sourced heat-pumps over Geothermal heaters, WHY?
click here for a more detailed explanation.

If you don't have natural gas or adequate electricity power supply for the required heat-pump, only then would you choose an LPG boiler.

  • In summer, solar systems can provide 100% of the energy required for domestic potable hot water
  • In winter and in the colder climates solar systems will need to run their boosters to ensure a safe water temperature.
  • In the Southern States, home heating in winter requires far more energy than potable hot water.

In the Southern States where winter heating is a necessity, Solar systems (incl evacuated tubes) just do not provide enough energy when needed most, and for most home installations, can therefore at best only provide a token input.

  • If you are in a natural gas area, you'll probably just use a straight gas boiler, if no gas use a heat-pump.
  • In normal winter conditions, a heat-pump will use less power than the booster required in a solar or evacuated tube hydronics system.
  • If you don't have adequate power supply for the required heat-pump, only then would you choose an LPG boiler.

creating emissions

Natural GAS is NOT a renewable resource and releases greenhouse gas emissions when burned. Historically Natural Gas has been cheap to buy in Australia - those days are over. The electricity used by air-sourced heat-pumps can be supplied by clean renewable energy systems.

Heat-Pump Hydronic Water Heaters:

Below ground, the temperature doesn't fluctuate as much as above ground. We can take advantage of that by burying pipes underground to extract heat. Generally, the deeper you go the ground gets warmer. The problem with Geothermal systems is that the cost of burying the pipes far outweighs the operating cost savings compared to an air-sourced heat-pump. (you will never save enough in lower operating costs, when compared to the installed cost of an air-sourced system)
Save your money and install a Cold Climate Air Sourced Heat Pump, or spend the extra on solar electricity - this will be a much more economical and sustainable option than geothermal.

HEATING THE NATURAL WAY: An air-sourced Cold Climate hydronic heat pump uniquely extracts solar heat energy found abundant in the in air and transfers it to water.  

Never buy a heat-pump that has an electric element - check first!

If it needs an electric element at any stage of its operation, then it's a hybrid not a true heat-pump.
The heat pump is probably undersized for the job.
As soon as the element kicks-in the electricity meter is going to start spinning faster and you've lost the entire reason for having a heat-pump in the first place!

This goes for domestic & commercial heat pumps too!

domestic slab heater

The air-sourced system is comprised of:

  • Floorcoils laid in the slab to 1 or more manifolds
  • Flow & return lines to/from manifolds
  • 1 or more Heater Units
  • Buffer Tank & expansion sub-system
  • Recirculating pumps
  • Wall mounted thermostat (Zone control)

domestic slab heater

Skyline Energy SX-17CC air sourced heatpump being installed-160

Sensational air-sourced heat-pumps rated from 4kW to 200kW output.

These "21st Century" Hydronic Slab Water Heaters are unlike any other, because:

  • They have sensationally low running costs
  • They can keep your home warm all winter regardless of weather
  • They are very durable and robust
  • Multiple units can heat any sized slab
  • Almost as efficient as Geothermal heat-pumps, but much cheaper to install
Skyline Energy SX-22CC air sourced heatpump

An Ecological Solution:

The mysterious air-sourced heat pump.
At first, our claims about this being a high efficiency solar system may seem outrageous, but really its quite simple - there is no magic, just science. Pushing hydrocarbon gas through a massive heat-exchanger at about -30oC, it readily absorbs solar energy in the form of heat out the air. Because they don’t rely on direct sunlight radiation, they can operate in all seasons of the year, under all conditions; shade, overcast, sun, rain, frost, even at night.

Long after a conventional solar collector array or evacuated tube system has given up and reverted to its booster, our air-sourced heat pump is still absorbing vast amounts of solar energy.

Geothermal systems provide the most efficient heating, however - unlike much of Europe where hydronic heating has been used for decades, in most area’s of Australia a hydrocarbon air-sourced heat pump will provide similar performance to a ground sourced (Geothermal) heat pump, but there is no need bury hundreds of metres of pipes in the paddock.

With zoning control and even remote activation by telephone if required, used in conjunction with good building practices such as good insulation, hydronic heating with our state of the art, correctly sized air-sourced heat pumps can be an economical and ecological solution to your home heating requirements

During the life of this product, electricity will be generated more & more from renewable resources, making it the energy of choice: . . . . “let us exceed your expectations”
More info

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Hydronic Heating Victoria