They are heating systems that use heat from pipes located behind the surfaces of the room to be heated.



Compared to traditional heating bodies, i.e. radiators, the radiant floor has the following advantages:

  • Lower operating costs on 24h operation if compared to traditional heating bodies, this is because it is a low temperature system, with pipes or electrical conductors working at about 30-40 °C (in common radiators: 60-75 °C). It has been calculated that an underfloor heating system allows a 30% reduction in energy costs compared to a normal and traditional heating system.

A note regarding the advantages of electric heating systems is that, in addition to the usual concept of water heating systems, they do not require a boiler, chimney or distribution piping and do not need any kind of maintenance. On the economic front, electric heating has high costs, so it is only interesting where electricity is abundant and cheap. In France, for example, this system is made convenient by the massive use of nuclear energy and the need to dispose of excess energy during the night.


The pipes foreseen by the standard for water systems are made of cross-linked polyethylene (PE-X), polybutylene (PB), polypropylene (PP), copper; the use of steel has been abandoned, although the very first systems were made with this material. The laying pitch is variable, even inside the same room: the designer can choose to thicken the steps where greater thermal emission is required, i.e. near the external walls. For systems made with specific electrical conductors, the installation system does not vary, but since they are easier to work with, the construction of a system is simpler and faster.

For water systems, plastic pipes, particularly those in PE-X, are the most common: being flexible and light, they are easier to install; they must be equipped with an oxygen barrier layer to protect the system from corrosion. Although less common on the market, copper pipes are also installed. The advantage of these is their very high thermal conductivity (390 W/(m*K)), which allows an efficiency that would otherwise not be achievable; copper has wider pitches (generally 20-25 cm), is impermeable to oxygen and has a thermal expansion closer to that of the screed in which it is immersed.


The principle is based on the circulation of hot water at low temperature (usually between 30 and 35 °C) in a closed circuit, which develops covering a very high radiant surface. There are currently systems that use electrical energy, systems consisting of heating cables or strips of various kinds, although the principle is the technical/scientific one of the joule effect (synthetically: a conductor crossed by an electrical current dissipates energy in the form of heat).

There are two possible piping arrangements:

  • (or spiral), where the delivery pipes travel parallel to the return ones,
  • .

  • a serpentine, where the tubes are laid in a zig-zag
  • .


These radiant panels are installed in the walls of the room facing outwards: with this measure thermal dispersion is limited, as insulation is inserted underneath the pipes, and temperature differences between hot and cold walls are eliminated or reduced. The surface occupied by the radiant part of the walls depends on the design temperature (higher than floor systems), but generally varies from 1/3 to 1/2 of the walkable surface. The pipes do not extend beyond 2 metres in height.

A similar heating system is skirting board heating. Inside a special skirting board there are small pipes (often copper with aluminium fins) in which hot water flows. The air that comes into contact with the pipe overheats, comes out of a crack at the top of the skirting board and rises up to the wall; the wall in turn heats up and radiates heat towards the inside of the room.


Making the right decision regarding the heating of your home is good to remember that the much vaunted economic advantages of the radiant panel system can only be achieved if the living space is occupied throughout the day. If this is not the case, the possibility of switching the heating off and on again quickly and quickly (true and only energy saving) remains the only plausible solution to date.

Our services and what we do

The installation of a radiant panel system is not always the best solution, we evaluate together.

With the passing of the years, the control and management of energy consumption is becoming one of the first objectives for the significant reduction of fixed costs for any activity.

The professional figures within us and our experience in the field, gained from more than 40 years of activity in the energy sector, is able to analyze and focus the best solution for the most varied activities, whether they are industries, shopping malls, large distribution chains, manufacturing, residential complexes, farms, ect ect.

Customers who come to us, can therefore count not only on performance analysis based on new product proposals, but thanks to technicians in the field for years and measuring instruments of all kinds available to the company, we are able to understand where there are “uncontrolled leaks” of energy.

Do not hesitate to contact us, it may not be a cost to invest, but on the contrary, thanks to different types of energy saving incentives (see GSE, deductions, ENEA, white certificates), your exorbitant energy costs could become your new profit opportunities.

The feasibility study normally precedes the project start-up phase. This analysis, if anything, lays the foundations and preconditions for deciding whether or not a project should be started.

The extensive implementation of large works, in different fields of application and different uses of the plants, allows CTP PEROZZO IMPIANTI to make a major contribution to both the first analysis on several points:

economic estimate of the work under analysis compared with similar ones;

The choice of the right type of plant to be realised;

The planning of the disbursements to be financed for the work;

The costs of maintaining the plant;

Final evaluation to decide on the start of the work.

The company builds high-tech power plants in order to issue energy efficiency certificates (TEE).

The company has been building plants incentivised by the GSE for years, the internal staff is therefore used to dealing with and managing the various and articulated practices for obtaining incentives from the energy services manager.

Over the years the company has clearly had to deal with different economic realities and different credit institutions.

This experience means that in these cases, it is possible to direct and/or collaborate with the client in order to achieve or correct the financial investment, calculating the time required for amortisation, return on investment and economic savings.

– Plant maintenance;

– Management of large thermal systems;

– Remote control and monitoring;

– General assistance service;

– Management of white certificates;

– Renewal or remake of the plants.

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