Boiler Efficiency Ratings


Compare new boilers and assess whether your current boiler would be better off being replaced

Our boiler efficiency tables provided by SEDBUK (the seasonal efficiency of domestic boilers in the UK) provide a guide of how effective your boiler is at turning fuel into heat.

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.

For new boiler installations call British Gas Boilers on 0333 230 5216 for a no-obligation quote, alternatively visit Boiler Guide to request quotes from independent local and regional heating engineers.

BIASI Boilers

ModelTypeFuelEfficiency
Biasi 24S Non-CondensingGas78.3%
Biasi 24SR Non-CondensingGas78.4%
Biasi 28S Non-CondensingGas78.5%
Biasi Activ A 25OVCondensingGas90.3%
Biasi Activ A 20OVCondensingGas90.3%
Biasi Activ A 12OVCondensingGas90.1%
Biasi Activ A 15OVCondensingGas90.0%
Biasi Activ A 20OVCondensingLPG91.8%
Biasi Activ A 25OVCondensingLPG91.5%
Biasi Activ A 15OVCondensingLPG91.1%
Biasi Activ A 12OVCondensingLPG91.1%
Biasi Activ A Plus 35CCondensingGas90.3%
Biasi Activ A Plus 30CCondensingGas90.3%
Biasi Activ A Plus 16SCondensingGas90.2%
Biasi Activ A Plus 25SCondensingGas90.1%
Biasi Activ A Plus 35CCondensingLPG91.5%
Biasi Activ A Plus 16SCondensingLPG91.4%
Biasi Activ A Plus 30CCondensingLPG91.4%
Biasi Activ A Plus 25SCondensingLPG91.4%
Biasi ActivA 18SCondensingGas90.3%
Biasi ActivA 30SCondensingGas90.3%
Biasi ActivA 25SCondensingGas90.3%
Biasi ActivA 30CCondensingGas90.2%
Biasi ActivA 25CCondensingGas90.2%
Biasi ActivA 35CCondensingGas90.2%
Biasi ActivA 30SCondensingLPG91.8%
Biasi ActivA 25CCondensingLPG91.7%
Biasi ActivA 35CCondensingLPG91.7%
Biasi ActivA 25SCondensingLPG91.5%
Biasi ActivA 18SCondensingLPG91.5%
Biasi ActivA 30CCondensingLPG91.4%
Biasi ActivA Plus 25CCondensingGas90.0%
Biasi ActivA Plus 25CCondensingLPG91.3%
Biasi Advance Plus 30SCondensingGas90.4%
Biasi Advance Plus 35CCondensingGas90.3%
Biasi Advance Plus 30CCondensingGas90.3%
Biasi Advance Plus 16SCondensingGas90.2%
Biasi Advance Plus 25SCondensingGas90.1%
Biasi Advance Plus 25CCondensingGas90.0%
Biasi Advance Plus 30SCondensingLPG91.6%
Biasi Advance Plus 35CCondensingLPG91.5%
Biasi Advance Plus 16SCondensingLPG91.4%
Biasi Advance Plus 25SCondensingLPG91.4%
Biasi Advance Plus 30CCondensingLPG91.4%
Biasi Advance Plus 25CCondensingLPG91.3%
Biasi Garda M90F. 28SRNon-CondensingGas78.4%
Biasi Garda M90F. 28SNon-CondensingGas78.3%
Biasi Garda M90F. 24SRNon-CondensingGas78.3%
Biasi Garda M90F. 32SNon-CondensingGas78.3%
Biasi Garda M90F. 24SNon-CondensingGas78.2%
Biasi Garda M90F. 28SRNon-CondensingLPG80.2%
Biasi Garda M90F. 24SRNon-CondensingLPG80.1%
Biasi Garda M90F. 28SNon-CondensingLPG80.1%
Biasi Garda M90F. 24SNon-CondensingLPG80.0%
Biasi Garda HE M96.28SM/D2CondensingLPG87.1%
Biasi Garda HE M96.24SM/BCondensingGas86.4%
Biasi Garda HE M96.28SM/BCondensingGas86.3%
Biasi Garda HE M96.24SM/BCondensingLPG87.4%
Biasi Garda HE M96.28SM/BCondensingLPG87.2%
Biasi Garda HE M96.24SM/B2CondensingGas87.7%
Biasi Garda HE M96.28SM/D2CondensingGas87.6%
Biasi Garda HE M96.28SM/B2CondensingGas87.6%
Biasi Garda HE M96.28SM/B2CondensingLPG87.1%
Biasi Garda HE M96.24SM/B2CondensingLPG87%
Biasi Garda HE Silver M96.24SM/D2CondensingGas87.7%
Biasi Garda HE Silver M96.24SM/DCondensingGas86.4%
Biasi Garda HE Silver M96.28SM/DCondensingGas86.3%
Biasi Garda HE Silver M96.24SM/DCondensingLPG87.4%
Biasi Garda HE Silver M96.28SM/DCondensingLPG87.2%
Biasi Garda HE Silver M96.24SM/D2CondensingLPG87.0%
Biasi Garda Plus HE M110B.24SM/ECondensingGas90.2%
Biasi Garda Plus HE M110B.32SM/ECondensingGas90.0%
Biasi Garda Plus HE M110.24SM/ECondensingGas90%
Biasi Garda Plus HE M110.32SM/ECondensingGas90%
Biasi Garda Plus HE M110B.24SM/ECondensingLPG92.0%
Biasi Garda Plus HE M110B.32SM/ECondensingLPG91.2%
Biasi Garda Plus HE Silver M110.32SM/DCondensingGas90%
Biasi Garda Plus HE Silver M110.24SM/DCondensingGas90%
Biasi Inovia 30CCondensingGas90.3%
Biasi Inovia 35CCondensingGas90.3%
Biasi Inovia 25SCondensingGas90.1%
Biasi Inovia 25CCondensingGas90.0%
Biasi Inovia 35CCondensingLPG91.5%
Biasi Inovia 25SCondensingLPG91.4%
Biasi Inovia 30CCondensingLPG91.4%
Biasi Inovia 25CCondensingLPG91.3%
Biasi Parva M90 24SNon-CondensingGas78.2%
Biasi Parva M90 28SNon-CondensingGas78.3%
Biasi Parva HE Combi M96.24SM/PCondensingGas87.7%
Biasi Parva HE Combi M96.28SM/PCondensingGas87.6%
Biasi Parva HE Combi M96.32SM/PCondensingGas86.8%
Biasi Parva HE Combi M96.32SM/PCondensingLPG88.8%
Biasi Parva HE Combi M96.28SM/PCondensingLPG87.1%
Biasi Parva HE Combi M96.24SM/PCondensingLPG87.0%
Biasi Parva HE System M96.32SR/PCondensingGas86.9%
Biasi Parva HE System M96.32SR/PCondensingLPG88.9%
Biasi Parva HE System M96.28SR/PCondensingLPG87.2%
Biasi Parva HE Systen M96.28SR/PCondensingGas87.7%
Biasi Riva 28SNon-CondensingGas78.5%
Biasi Riva 24SRNon-CondensingGas78.4%
Biasi Riva 24SNon-CondensingGas78.3%
Biasi Riva 18 OV CondensingGas90.0%
Biasi Riva 30 OV CondensingGas90.1%
Biasi Riva Advance HE M110B.24SR/CCondensingGas90.3%
BIASI Riva Advance HE M110B.24SM/CCondensingGas90.2%
Biasi Riva Advance HE M110B.32SM/CCondensingGas90.0%
Biasi Riva Advance HE M110.24SM/CCondensingGas90.0%
Biasi Riva Advance HE M110.32SM/CCondensingGas90%
Biasi Riva Advance HE M110B.24SR/CCondensingLPG92.1%
Biasi Riva Advance HE M110B.24SM/CCondensingLPG92.0%
Biasi Riva Advance HE M110B.32SM/CCondensingLPG91.2%
Biasi Riva Compact M90E.28SNon-CondensingGas78.3%
Biasi Riva Compact M90E. 32SNon-CondensingGas78.3%
Biasi Riva Compact M90E.24SNon-CondensingGas78.2%
Biasi Riva Compact M90E. 28SNon-CondensingLPG80.1%
Biasi Riva Compact M90E. 24SNon-CondensingLPG80%
Biasi Riva Compact HE M96.24SM/CCondensingGas86.4%
Biasi Riva Compact HE M96.28SM/CCondensingGas86.3%
Biasi Riva Compact HE M96.24SM/CCondensingLPG87.4%
Biasi Riva Compact HE M96.28SR/CCondensingLPG87.3%
Biasi Riva Compact HE M96.28SM/CCondensingLPG87.2%
Biasi Riva Compact HE M96.28SR/C2CondensingGas87.7%
Biasi Riva Compact HE M96.24SM/C2CondensingGas87.7%
Biasi Riva Compact HE M96.28SM/C2CondensingGas87.6%
Biasi Riva Compact HE M96.32SM/C2CondensingGas86.8%
Biasi Riva Compact HE M96.28SR/CCondensingGas86.4%
Biasi Riva Compact HE M96.32SM/C2CondensingLPG88.8%
Biasi Riva Compact HE M96.28SR/C2CondensingLPG87.2%
Biasi Riva Compact HE M96.28SM/C2CondensingLPG87.1%
Biasi Riva Compact HE M96.24SM/C2CondensingLPG87%
Biasi Riva Plus M90D.28SRNon-CondensingGas78.4%
Biasi Riva Plus M90D.28SNon-CondensingGas78.3%
Biasi Riva Plus M90D.24SRNon-CondensingGas78.3%
Biasi Riva Plus M90D.24SNon-CondensingGas78.2%
Biasi Riva Plus M90D. 28SRNon-CondensingLPG80.2%
Biasi Riva Plus M90D. 28SNon-CondensingLPG80.1%
Biasi Riva Plus M90D. 24SRNon-CondensingLPG80.1%
Biasi Riva Plus M90D. 24SNon-CondensingLPG80%
Biasi Riva Plus HE M296.28SR/CCondensingGas89.6%
Biasi Riva Plus HE M296.24SR/CCondensingGas89.6%
Biasi Riva Plus HE M296.28SM/CCondensingGas89.5%
Biasi Riva Plus HE M296.24SM/CCondensingGas89.5%
Biasi Riva Plus HE M296.28SR/CCondensingLPG90.7%
Biasi Riva Plus HE M296.28SM/CCondensingLPG90.6%
Biasi Riva Plus HE M296.24SR/CCondensingLPG90.6%
Biasi Riva Plus HE M296.24SM/CCondensingLPG90.5%
Biasi Savio Gaia 428SNon-CondensingGas78.5%
Biasi Savio Gaia 424SNon-CondensingGas78.3%
Biasi Savio Knightsbridge 428SNon-CondensingGas78.5%
Biasi Savio Knightsbridge 424SNon-CondensingGas78.3%