The Baxi 600 system boiler range has 3 models with outputs from between 15kW and 24kW. This particular model, the Baxi 618 is middle of the range with regards to energy, with an output of 18kW for central heating. This system boiler is powerful enough to heat a small home with up to 10 radiators and one bathroom.
The important parts of the system are also pre-built into the boiler, which helps to make it more compact and easier to install and service.
System boilers are ideal for homes with a high demand for instant hot water, as they store heated water in a storage tank for when you need it. However, it is important to note that you will need to accommodate for this additional hot water tank in your home if you are considering buying a new or replacement system boiler. These hot water tanks are often installed in an airing cupboard or a similar size space in your home.