The Greenstar Ri regular boilers are the smallest of Worcester's condensing boilers - they can even be installed within a standard kitchen cabinet.

These boilers are available in 4 different outputs which means that there’s one to suit small, medium and larger properties. The Greenstar Ri Regular boilers are used with a heating system that includes stored hot water in a cylinder.

The Greenstar Ri boilers have a fascia-mounted heating temperature control knob and neon operational status indicator.
Central heating output: 24kW 

Efficiency
90.1% A

The Greenstar 18Ri is 90.1% efficient and is in the highest possible official efficiency category, SEDBUK band ‘A‘ For ease of installation, flow and return pipes can be plumbed in from above or below the boiler.

• Lift weight: just 22.6kg - the lightest boiler in its class
• Technical data tableTechnical data: 
  Height (mm) 600mm
  Width (mm) 390mm
  Depth (mm) 270mm
  Weight 22.6kg
• Output to central heating and domestic hot water 8 - 24kW (27,296 - 82,000Btu)
• SEDBUK Value/band 90.1%/Band A