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Our rating: 4/5
Efficiency rating: 90.1%*
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Worcester-Bosch Greenstar 18Ri
The Worcester-Bosch Greenstar 18Ri is a gas-fired condensing boiler of the regular or "heating only" type. The appliance casing – which has maximum dimensions of just 600mm x 390mm x 270mm – contains an efficient cast aluminium heat exchanger, fan, etc., but is suitable for wall mounting.
The Worcester-Bosch Greenstar 18Ri is suitable for use on open vent and sealed primary water systems and rated "A" for energy efficiency by SEDBUK ("Seasonal Efficiency of Domestic Boilers in the United Kingdom"). Indeed the condensing nature of the appliance means that the heat contained in waste gases is recycled, rather than disappearing out of the boiler flue, so the Worcester-Bosch Greenstar 18Ri can reduce domestic hot water and central heating bills by between 15% and 20% and the level of carbon dioxide (CO2) released into the atmosphere.
The key features and product details of the the Worcester-Bosch Greenstar 18Ri are as follows:
- 18kW maximum output (6kW minimum) to domestic hot water and central heating
- Maximum flow temperature of 82°C
- Primary water capacity of 1.1 litres
- Automatic gas pressure adjustment
- Low carbon dioxide (CO2) and nitrogen oxide (NOx) pollutant emissions
- Reversible flow and return pipes allow exits from above or below the boiler unit for flexibility of installation
- Combined ignition and control board for fewer connections
- Integral frost sensor and fault finding diagnostics
- Low noise output at 43.7dB
- Comprehensive 2 year warranty on parts and labour plus 10 year warranty on primary heat exchanger subject to annual boiler inspection and servicing
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* When review applies to a range of Boilers, efficiency applies to best model in range. Always check with manufacturer.