The Greenstar Si combi boilers are mid-range appliances.

They’re suitable for apartments and small to medium sized 1 bathroom properties.

You can control both the hot water and central heating temperatures on a Greenstar Si boiler. There is also a range of optional controls available, offering you further comfort and flexibility.

Central heating output: 24kW
Domestic hot water flow rate: 12.3 litres per minute at 35 degree temperature rise (provided adequate mains water pressure is available)