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Worcester Greenstar ZWB 7-30 HE Combi Gas - 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 Greenstar ZWB 7-30 HE Combi Efficiency

SAP seasonal efficiency90.6%
Rating bandBand A


ManufacturerWorcester Boilers
ModelGreenstar ZWB 7-30 HE Combi
Fuel TypeGas
Flue TypeRoom-Sealed
FanFan Assisted
Output (kW)29.5 - 29.5
Boiler ID47 311 74
Manufactured From/To2003 - 2003


The Worcester Greenstar ZWB 7-30 HE Combi is an 'A' rated boiler which has an excellent efficiency of 90.6%.

The Greenstar ZWB 7-30 HE Combi is a Condensing Combi boiler with a maximum power output of 29.5kw that uses Gas as its fuel source.

As this boiler is 'A' rated it will provide efficient heating and subsequently reduce fuel bills and carbon dioxide emissions.

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