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Mistral OD4-C-1215 Outdoor Mega Combi 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 OD4-C-1215 Outdoor Mega Combi Efficiency

SAP seasonal efficiency82.1%
Rating bandBand C


ManufacturerMistral Boilers
ModelOD4-C-1215 Outdoor Mega Combi
Fuel TypeOil
Flue TypeOpen or Room-Sealed
FanNo Fan
Output (kW)35.2 - 44
Boiler ID
Manufactured From/To2004 - 2006


The Mistral OD4-C-1215 Outdoor Mega Combi is a 'C' rated boiler with an efficiency of 82.1%.

The OD4-C-1215 Outdoor Mega Combi is a Non-Condensing Combi boiler with a maximum power output of 44kw 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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Results ordered by efficiency. Some models may be obsolete.

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