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Mistral Lo-Nox BF CKUT 1 15/20 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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Mistral Lo-Nox BF CKUT 1 15/20 Efficiency

SAP seasonal efficiency94.1%
Rating bandUnknown


ManufacturerMistral Boilers
ModelLo-Nox BF CKUT 1 15/20
Fuel TypeOil
Flue TypeOpen or Room-Sealed
FanNo Fan
Output (kW)15 - 20
Boiler ID
Manufactured From/To2010 - current


The Mistral Lo-Nox BF CKUT 1 15/20 is unrated, this probably means it's obsolete or very old.

The Lo-Nox BF CKUT 1 15/20 is a Condensing Conventional boiler with a maximum power output of 20kw that uses Oil as its fuel source.

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

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