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Worcester Bosch 70/90.000 Oil - Boiler Efficiency Ratings

Boiler Efficiency Rating

You can check your boilers rating by selecting it's make and model below. Ratings are based on the SEDBUK Rating which is an indicator of its efficiency when used within an average domestic household, it's a great benchmark for comparing new boilers and also assessing whether your current boiler would be better off being replaced due to low efficiencies.

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Worcester Bosch 70/90.000 Efficiency

SAP seasonal efficiency84.3%
Rating bandBand C


ManufacturerWorcester Boilers
ModelBosch 70/90.000
Fuel TypeOil
Flue TypeOpen
FanFan Assisted
Output (kW)20 - 25
Boiler IDC14769/4-1
Manufactured From/To1997 - current


The Worcester Bosch 70/90.000 is a 'C' rated boiler with an efficiency of 84.3%.

The Bosch 70/90.000 is a Non-Condensing Conventional boiler with a maximum power output of 25kw that uses Oil as its fuel source.

Although a 'C' rated boiler is not as efficient as many other modern boilers it's still pretty good, only a marginal reduction in fuel bills and carbon dioxide emissions would be observed by replacing it.

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(Non-Condensing Oil Conventional)

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