The Thorn EMI Heating Marathon 400b has a SAP seasonal efficiency rating of 65.0%.
The Marathon 400b is a Non-Condensing Conventional boiler with a maximum power output of 11.7kw that uses Gas as its fuel source.
We recommend that you upgrade to a new, more efficient boiler to help reduce fuel bills and carbon dioxide emissions. Get quotes for a new boiler today
|Manufacturer||Thorn EMI Heating|
|Output (KW)||8.8 - 11.7|
|Manufactured From/To||- 1997|