If you have replaced any technological device recently, you will know that even a more current basic model is equipped with technological novelties. Most people, however, do not know that home heating technology has advanced by leaps and bounds in the same way in the last decade. The result is that, if you choose correctly, you will end up with a natural gas system that is not only cheaper but also easier to use. The Combi boilers combine the heating system of hot water and the heating of the house in a single tank, so the same system supplies hot water and central heating. Combi boilers may or may not be more efficient than conventional systems, depending on how the system is designed.
In addition, since 2005 it is mandatory that all gas boilers installed in homes, whether new installations or replacements are condensing boilers (or oil boilers too, since 2007). They are more efficient, since they can recover the latent heat contained in the waste gases, and are suitable for all homes.
Kinds of boilers
The Combi boiler works as sealed systems that provide hot water for both the faucets and the central heating system, heating the water directly from the mains when necessary. They are faster, easier and cheaper to install than other types of boilers, also save space due to the lack of a cylinder or cistern. The water is supplied at the pressure of the electrical network so you can enjoy a more powerful shower.
On the other hand, it is a priority system, so it only performs one heating action at a time. While it is fine for small families with a bathroom, families with more rooms will experience poor flow rates when several outlets are used at a time.
The boilers of the system are installed in sealed heating systems, but, unlike the combis, they operate according to the principle of storing hot water in a cylinder, so that they can feed several outputs at the same time to the pressure of the network. It is ideal for larger houses with greater demands, and as it has incorporated most of its main components (ie, expansion vessel and pump), the installation is faster, cheaper and more orderly. The flows are usually high since the water is supplied at the pressure of the network and the hot water is instantaneous.
Finally, conventional boilers are now mainly purchased as substitutes for homes with an open ventilation heating system. Like the boilers in the system, they operate according to the principle of stored water and require a cylinder of hot water separately. The tap water will have a good flow rate (not to be confused with the pressure) and the hot water can be supplied instantaneously. This is the ideal configuration for a “power” shower, which requires a cold water supply from the cistern and an independent electric pump.
They are more expensive to install, they need more components and pipes and they take up more space. They may suffer low pressure if the tank is not high enough, which means that additional reinforcements may be required. The hot water may run out. To know more about combi boiler please visit https://www.combiboiler.co.uk/