When we want to install underfloor heating in our home, we must keep in mind the criteria for choosing the right system.

PURMO, as a leading company in the field, has a wide range of underfloor heating systems, so that the one you choose will perfectly match the specifics of each of your buildings.

The criteria that determine the choice of the underfloor system are many, such as:

Whether it’s a new house or a renovation of an existing one, the shape and the condition of the subfloor, the thermal losses, the use of the heated space and the space below it (whether it is also heated or not), the openings and the thermal insulation factor of the space , the available height, the floor's resistance to loads, the regional climate conditions and others.

For renovation, PURMO has developed wet and dry screed underfloor systems, which have a small height (from 2.2cm), minimal weight and are easy to install so as not to burden the slab or lower the available height in the space.

For new homes, where underfloor heating has been planned from the beginning, there are classic and new systems, with strong thermal and sound insulation, at various heights (from 1 to 5cm), depending on the losses of the space and the nature of the space or floor below, if it is heated or not, etc.

Also, these systems have flexibility in how the pipes are fixed, making it easy for the technicians to choose the system they are familiar with. These systems are suitable for concrete slabs with surface irregularities, bulges and imbalances that often arise in the "Greek building", as they absorb many of them due to the large thickness of expanded polystyrene (EPS) insulation, which is also available with different hardness . Thus, the multitude of versions of the underfloor insulation provided by PURMO makes it perfectly suitable even for the most "special" cases of buildings.

Furthermore, the location of the house with the microclimate of the area, the nature of the house, i.e. whether it is a permanent residence or a holiday home, play a role. In a southern region of our country, close to the sea, where the weather and ambient temperature have rapid changes, even within the same day, it is good to choose an underfloor system with low inertia, so that it can follow the rapid changes. This means a wet underfloor system but with a thin screed profile or even better a dry screed system, where the floor response is very fast almost like radiators. The same applies to a holiday home, which we want it to warm up as quickly as possible, enjoy our short vacation and return to our base.

Last but not least, we must bear in mind that the A and Z of both thermal comfort and of money saving in an underfloor heating system, are the autonomies, i.e. the thermostats in each room together with the appropriate control panel . Such a system intelligently manages the temperatures separately in each room, with time shared heating load between rooms and internal temperature compensation, with accurate power modulation of the heat source according to demand, with forecast and open window functions, making the heat source (boiler or heat pump) work exactly as much as needed.

The result is real maximum heating savings that within a very short period will return the money spent on these automations right back to your pocket.