Condensing boiler

The condensing boiler is one of the most popular systems for domestic heating. On the market there are various types, depending on the technical specifications. Each model offers certain advantages and its use makes it possible to improve the energy efficiency of the entire home. In this sense, one of the most ‘economical’ options from an energy point of view is the condensing boiler. If you need advice on how to save on your bill, read the 16 tricks to consume less.

What is a condensing boiler?

Condensing is a type of water boiler. Compared to the traditional ones, however, it has a slightly different functioning. To understand the peculiarity of this kind of boilers, it is first of all necessary to keep in mind how the traditional ones work. To simplify, a boiler uses a heat source to heat the water that passes through pipes or other similar bodies. This process causes exhaust fumes which have a rather high temperature.

The condensing boiler uses part of the heat from the exhaust fumes to heat the water. In this way, the system is more ‘economical’ since it recycles part of the heat that would be lost to increase the temperature of the water in transit. Therefore, it uses less energy to achieve the same result. In practical terms, this translates into two benefits: a lower temperature of the exhaust fumes and lower fuel consumption (and consequently, lower NOx and CO2 emissions).

Generally, condensing boilers are equipped with a fan, housed upstream of the burner, for expelling the exhaust fumes. For this reason, it is not always possible to use the flue to discharge the fumes of several boilers, as would happen, for example, in an apartment building.

How much does it cost to install 4-star boilers?

In addition to being more energy-efficient, condensing boilers are also more expensive. Depending on the model and characteristics, the price difference can be as much as double or triple that of a traditional boiler. The latter, in fact, can be purchased at prices ranging between 500 and 2,000 euros. Condensing boilers, on the other hand, are generally more expensive, as they have prices ranging between 750 and 5,000 euros.

The cost of a condensing boiler must be estimated including the labor required for installation. The entire system, in fact, must be assembled in a compliant manner and this requires the right skills. Depending on the type of intervention required, an installation by specialized technicians (who must also issue a certificate of conformity to the customer) can cost up to 500 euros.