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Ariston Microgenus II 31 MFFI LPG - 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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Ariston Microgenus II 31 MFFI Efficiency

SAP seasonal efficiency81.7%
Rating bandBand D


ManufacturerAriston Boilers
ModelMicrogenus II 31 MFFI
Fuel TypeLPG
Flue TypeRoom-Sealed
FanFan Assisted
Output (kW)31.1 - 31.1
Boiler ID
Manufactured From/To2004 - 2007


The Ariston Microgenus II 31 MFFI is a 'D' rated boiler with an efficiency of 81.7%.

The Microgenus II 31 MFFI is a Non-Condensing Combi boiler with a maximum power output of 31.1kw that uses LPG as its fuel source.

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

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