Gas combination boilers or ‘combi’ boilers, heat water directly from the mains when you turn on a tap, so you won’t need a hot water storage cylinder or a cold water storage tank.

This Greenstar Si Compact combi boiler is suitable for small to medium sized homes with one bathroom. This boiler is designed to fit within a standard kitchen cupboard and has an easy to use control that allows you to fine tune your comfort.

• Fits in a standard kitchen cupboard
• Instantaneous hot water
• Hot water temperature can be fine tuned
• Wide choice of controls including the internet connected Worcester Wave
• Simple boiler controls with clear temperature display
• Low energy pump reduces electrical usage
• 10 year warranty when used alongside Greenstar System Filter
• Previous Which? guide Best Buy winner
• Dimensions 690mm x 390mm x 280mm

Delivery in approximately 5-7 working days