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Worcester Firefly PJ90-120 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 Firefly PJ90-120 Efficiency

SAP seasonal efficiency65%
Rating bandUnknown


ManufacturerWorcester Boilers
ModelFirefly PJ90-120
Fuel TypeOil
Flue TypeRoom-Sealed
FanFan Assisted
Output (kW)26.4 - 35.2
Boiler ID
Manufactured From/ToUnknown - 1985


The Worcester Firefly PJ90-120 is unrated, this probably means it's obsolete or very old.

The Firefly PJ90-120 is a Non-Condensing Conventional boiler with a maximum power output of 35.2kw that uses Oil as its fuel source.

Being an Unrated boiler it would be worthwhile replacing it with a higher efficiency 'A' rated boiler.

Similar Worcester Boilers to the Firefly PJ90-120
(Non-Condensing Oil Conventional)

Results ordered by efficiency. Some models may be obsolete.

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