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This radiant heating system ensures that heat is distributed evenly and rises naturally, warming the room from the ground up.

From the heat emitters to the condensing boilers, a typical underfloor hydronic heating system consists of many vital parts.

Additionally, while the initial setup cost for hydronic heating may be higher, its operational costs are generally lower. This is due to the efficient heat transfer properties of water, which are further enhanced by energy-saving technologies like solar heating or advanced boilers.

But just how does hydronic floor heating work, and what benefits does hydronic underfloor heating provide over more familiar home heating systems? We’re here to explore these questions and more. As energy prices climb, the efficiency and cost-effectiveness of hydronic systems make them an attractive solution for sustainable home heating.

The principle of reverse osmosis was first discovered in the 1950s during the desalination of seawater. It is a process tha can generate almost 100% pure drinking water from sources such as seawater. In this process, water is pressed through a synthetic, semi-permeable membrane that is only permeable in one direction and only to water molecules.

We also make a distinction between different membrane processes, such as microfiltration (MF), ultrafiltration (UF), nanofiltration (NF) and reverse osmosis (RO). The first two processes can be described as mechanical fine sieves. They consist of artificially produced membranes with a defined pore diameter. It is important for the function of the membrane that the pores become larger in the direction of the pure water. Nanofiltration and reverse osmosis use dense, diffuse (breathable) membranes.

Hydronic radiant floor heating not only enhances comfort but also provides significant health and safety benefits. Here are some of the key advantages:

Surface filtration is carried out in large filter basins or tanks that are filled with a filter medium such as sand, gravel or activated carbon. Here, the particles are retained directly on the surface of the medium due to their size, as their diameter is larger than the pore size of the filter medium.

Cake filtration combines elements of surface and depth filtration. The retained particles form a filter cake on the filter medium. This filter cake, whose thickness and density can vary depending on the application and particle type, contributes to particle separation or forms the actual filtering layer. It increases the resistance to the water flow and thus leads to an increase in pressure in the filter system.

In hydronic heating systems, the pipes are key as they carry and emit heat. These pipes, often made from strong materials like cross-linked polyethylene, are arranged in a way that spreads the hot water evenly across the floor, ensuring the temperature stays consistent throughout the house.

In addition to conventional water filtration methods, there are special filtration processes that are particularly suitable for certain applications due to their unique properties and mechanisms. Two of these special filtration methods are membrane filtration and activated carbon filtration. Both processes have proven to be effective in various fields and offer efficient solutions for the removal of contaminants on a microscopic level. In the following sections, we present these two filtration methods in more detail and explain their areas of application, advantages and modes of operation.

Radiant floor heating systems stand out for their remarkable efficiency and the exceptional comfort they provide. Here are the key benefits:

Homeowners can use controls linked to the manifold to set heating schedules and adjust temperatures, improving comfort and saving energy. These smart control systems are key to the efficient running of hydronic heating, allowing precise adjustments that match daily living patterns and preferences.

These features make hydronic radiant floor heating a top choice for those prioritising health and safety in their heating options.

Adopting hydronic heating not only ensures a more comfortable indoor climate but also contributes to significant energy savings. Whether renovating or building new, considering a hydronic system can be a wise investment towards a sustainable, cost-effective, and comfortable home heating solution.

This type of water filtration usually only requires a thin layer of filter medium and can also be carried out with very thin membranes. Membrane filters, which have a pore size of just 0.2 μm, are primarily used for sterile membrane filtration in the medical sector in order to provide reliable protection against water-associated germs such as legionella or pseudomonas. Cloth filters are used in sewage treatment plants, for example.

The choice of boiler – either the standard or the more efficient condensing boiler – can affect both the performance and installation costs of the underfloor heating system. Modern boilers, designed to integrate seamlessly with in-slab heating systems, can also support additional fixtures like towel rails, ensuring a uniform heating solution throughout the home. These systems not only provide consistent warmth but also enhance the aesthetic and comfort of living spaces without the visual intrusion of traditional radiators.

Illustrations modified from Förster B, Caesar T: Luftfiltration in Reinraumtechnik (air filtration in clean rooms). Springer 2012

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Particularly suitable for cold Australian winters, hydronic underfloor heating allows homeowners to enjoy a consistently warm environment without the harshness of hot air blowing. It also offers the flexibility to control temperatures in different zones of your home, making it both an efficient and versatile heating solution.

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The method is used in various areas, for example in wastewater treatment plants, where it contributes to the effective separation of solids from the water.

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Water filtration is a central component of water treatment and is used to remove impurities and make it safe for human consumption. There are various filtration principles that are used depending on the type of impurities and the desired degree of purity of the water.

Hydronic floor heating is a radiant heat transfer system capable of providing consistent and comfortable warmth throughout your home. This underfloor heating system has long been popular in Europe and the United States, and is fast gaining traction among Australian homeowners.

The core of any hydronic heating system is its heat source, which significantly influences its efficiency and effectiveness. Commonly, homes utilise a boiler—often natural gas-fired—to heat water. This boiler functions as the primary heat emitter, circulating hot water through the network of heating cables and radiator panels installed in the slab beneath the floor.

The pipes connect to a central manifold which controls the hot water flow to different areas of the home. This ability to adjust the temperature for different rooms makes the system more comfortable and efficient. This precise control is why many people choose hydronic systems for their homes, even when using additional panel radiators for extra heat.

Activated carbon filtration is essentially based on the principle of adsorption. Pollutants such as dust or heavy metals are removed from liquids or gases with the help of filters containing activated carbon. In water treatment, activated carbon filters are used for the adsorptive retention of organic substances and odours and flavours, or to filter drug residues from the water.

Naturalfiltration

Hydronic heating systems represent a superior solution for home heating in Australia, combining efficiency, comfort, and environmental friendliness. With their ability to deliver consistent, gentle heat without the noise and allergens associated with traditional systems, they are an excellent choice for enhancing the quality of living in any home.

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Filters are used in water treatment by local authority water suppliers. The water must be treated in accordance with the provisions of drinking water standards and regulations. More and more private households are now also using additional water filters for hygiene reasons.

Hydronic heating systems provide several advantages over electric radiant and traditional forced-air systems. Unlike electric systems that use coils, hydronic systems circulate warm water through pipes, maintaining heat more efficiently, especially in larger spaces or whole homes. They offer more consistent warmth than forced-air systems, which blow heated air and can create drafts and noise. This results in a quieter, more stable living environment.

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Please note: Thank you for reading our blog “How Does Hydronic Floor Heating Work?”. This information is provided for advice purposes only. Regulations differ from state to state, so please consult your local authorities or an industry professional before proceeding with any work. See our Terms & Conditions here.

Microfiltration

Due to the adsorption technology, activated carbon only has a finite absorption capacity, which means that it needs to be replaced or regenerated after it has been depleted. If the activated carbon is not replaced or regenerated in time, it will be overloaded and the filtrate may contain a higher number of undesirable substances than the raw water. Furthermore, the carbon also acts as a reducing agent and is suitable for removing oxidising agents such as ozone and chlorine from exhaust air or process and wastewater. Activated carbon filters are also available with a membrane core, for example, so that the advantages of both types of water filtration can be combined.

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In the case of the membrane filtration method, the water is filtered through a thin, fine-pored wall (the membrane) which, depending on its nature, can retain even the smallest particles such as viruses or bacteria. Such special filters are referred to as sterile filtration. The majority of membrane filters are made from polymeric materials, i.e. plastics, even though ceramic or metal membranes are also used in some areas.

There are various membrane geometries such as flat sheet membranes, hollow fibre membranes, mono-channels, multi-channel elements, discs and pocket membranes. Hollow fibre membranes, which are employed as point-of-use filters, are primarily used to ensure water hygiene in the medical sector.

In depth filtration, a filter layer of packed granular materials with a considerable depth, typically 1-2 metres, is required to effectively separate the particles from the liquid. This method is particularly suitable for applications with a high dirt load where surface filtration methods such as membrane filtration are not sufficient due to their limited service life.

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These features make radiant floor heating an excellent choice for those seeking a comfortable and economically efficient home heating solution.

What isfiltration

Filtration can remove hormones, pesticides, nitrate, nitrite, pharmaceutical residues and any heavy metals from the water. The selection of a specific filtration process depends on the quality of the raw water and the requirements for the end product (tap water, process water, water for medical purposes).

During the filtration process, the water flows through the filter medium. The larger particles are retained in the upper layers and the smaller particles in the deeper ones. The particle diameter is smaller than the pore diameter so that the particles penetrate the pores and are retained within the filter medium.

Filtration is the process by which of liquid or gaseous substances are purified using various filter processes. It is a mechanical separation process and is based exclusively on a physical basis. Terms such as filtration and filtering are used synonymously in this context. Filtration is essential for water treatment since it is the only way to ensure reliable protection against harmful germs and bacteria.

In a hydronic heating system, the manifold serves as the central hub that distributes hot water from the boiler to different zones. It is carefully designed to control the water flow efficiently, making sure each part of the home gets the right amount of heat. This component is crucial for the system’s operation, acting as an advanced heat distributor that adjusts and balances the heat output.

Cake filtration requires a filter medium that allows the liquid to pass through and retains the solids, as well as a pressure difference. The filter medium can be either flat (such as textile and wire mesh, paper or cardboard) or layered (such as sand or sinter layers).

In addition, there are various chemical and biological processes for water treatment such as disinfection or biochemical oxidation. The various processes all have their advantages and disadvantages. The choice depends on the specific substances present in the water to be treated and the desired final quality of the water.