FAQ 2017-05-15T13:50:54+00:00
Hydronic heating systems use hot water as the heating source that is distributed via radiator panels or through concrete flooring. Hydronic Heating systems are also capable of operating two or more individual systems from a single hydronic boiler allowing for customised heating options for individual areas.

Each radiator can also be adjusted individually by using a thermostatic valve, which caters for the individual comfort requirements of each living space.

Hydronic heating systems transfer their heat via a process of thermal radiation and convection. The heating source in most cases is an energy efficient gas boiler that transmits the hot water through a hydronic piping system and is distributed via wall radiators or through concrete flooring.

A circulating pump moves the hot water through the system and returns it back to the boiler and is reheated via a reticulating system. Where natural gas is not available Hydrotherm hydronic heating systems can use LPG boilers, electric heat pump or solid fuel systems as the heat source.

There are numerous benefits that come with hydronic heating including:


  • Individual control valves to each panel allow individual rooms or zones* to be heated independently, enabling running costs to be substantially lowered.
  • Panel radiators can provide effective heating for rooms with higher ceilings (details on which radiator types are suitable for areas with high and low ceilings are discussed over the page).
  • There is no dust circulation and air movement with silent radiant heat distribution.
  • Flexibility as further radiators or convectors can be added to a system as required, provided there is adequate boiler capacity.
  • Response time is generally good, and you will feel warm within 30 – 45 minutes.
  • Low maintenance requirements.
  • The proven effectiveness of hydronic heating—it has been widely used in Europe for almost a century.


* A zone is a group of rooms used for a similar purpose. For instance—the kitchen, living, dining and family rooms constitute the ‘living’ zone; bedrooms the ‘sleeping’ zone; and bathrooms, toilet and laundry the ‘service’ zone in typical homes.

We’ve already covered the benefits of hydronic heating above, but we know that some of our customers are also considering ducted heating systems. The reality is, ducted heating systems force hot air into a room, which rises quickly to the ceiling where it pools. Not only will you find that most of the heat has risen, there is also an uneven distribution of heat within the room as a room will be warmer at the source of distribution as seen in the diagram below.


Ducted heating systems are also renowned for spreading dust and other allergens throughout the room when heating the room. Ducted heating is also considerably noisier than a hydronic heating system.

The short answer is yes. Whilst hydronic heating is best installed when a home is being built there are options to have hydronic heating installed into existing homes. The options available to you will depend on the characteristics of your home however. For elevated homes, ideally accessible crawl space will facilitate installation. Alternatively, for homes built on concrete slabs, the necessary pipework may need to be run externally or fitted in your wall or ceiling cavity. With that said, in nearly all cases there will be a hydronic heating option available for you.
A Hydronic heating system can be up to 30% more efficient than some gas ducted heating systems. A more efficient system means cheaper energy bills whilst reducing emissions, which is better for our environment.
Every project will vary in its heating requirements and budget. The characteristics and size of a property will often dictate the price of installation. To accurately assess the costs of installing hydronic heating why not speak to one of our specialists to arrange a quote.
Bosch hydronic heating condensing boilers are also able to provide domestic hot water. These are often referred to as ‘combination’ boilers. Generally, providing hot water will add approximately $900-$1200 to the cost of a hydronic system only boiler. Hydronic systems provide ‘instantaneous’ domestic hot water, similar to that produced by continuous flow hot water systems at 21 l/min (suitable for a two-bathroom home).
We pride ourselves on our experience and professionalism and only plumbers, technicians and electricians that are Hydrothem Hydronic employees complete our installations to ensure our installation standard is maintained.
If you live in an urban area, the cheapest fuel is natural gas. Solid fuel is an option, but is only more economical if it is available at little or no cost ($60 per tonne or less). If natural gas is not available, the cheapest fuel is generally solid fuel. However, intensive labour is required to keep the boiler operating effectively. LPG is an option in areas without natural gas, but is generally around two and a half times more expensive, depending on where you live. Electric heat pump systems are also available at limited water temperatures (great for slab heating). If radiators were used on these systems the size of the radiators would need to be increased by a minimum of 35% to give out the same amount of heat as radiators on a gas fired system.
Every Hydrotherm Hydronic Heating installation comes with a 7 year warranty. With regard to product warranties, Bosch condensing boilers come with a 5 year warranty on the heat exchanger and Bosch Radiators come with a 25 year manufacturers warranty. The Rehau pipe work also carries a 25 year warranty.
Hydrotherm Hydronic Heating installs hydronic heating systems statewide throughout Victoria.
Meet with our friendly team at our showroom between the hours of 7.30am – 5pm Monday to Friday. By bringing any floor plans with the necessary elevations along with any additional information in relation to the windows, insulation and other building materials used in your development to assist with us providing you an accurate price for the install.


Alternatively, send through your plans to our sales team here to receive an online quotation. If plans are not available a site visit can be organised with one of our team members.

To ensure the efficiency and longevity of your hydronic heating system, we recommend an annual service.
Hydrotherm has a specialist hydronic servicing team available to anybody needing their hydronic heating system serviced. Call (03) 9569 9559 to book a service in today!
Established in 1987, we have now been in business for more than 30 years. Not only have we installed thousands of heating systems, the wealth of knowledge of our team is unmatched in Victoria. By selecting Hydrotherm Hydronic Heating as your preferred installer you are guaranteed to maximise your system design and guarantee a quality installation.