Vaillant EcoFIT Pure 618 System Boiler

The EcoFit Pure 618 sits in the middle of the range when it comes to energy output, with an output of 18.4kW, perfect for homes with up to 15 radiators and a bathroom with a bath. However, if you feel your home has a higher demand for heating and hot water, Vaillant has designed the EcoFit Pure 625 and 630 with an output of 25kW and 30kW. On the other hand, if you feel that your home is on the smaller side and you don’t require such high demand, the 612 and 615 are also available. 

System boilers are great for those who require hot water on demand, this is because a system boiler has an additional hot water cylinder that stores the heated water. It is important to note that you will need to accommodate for this extra cylinder when thinking of purchasing a new or replacement system boiler.