Baxi - Boiler Efficiency Rating

Compare new boilers and assess whether your current boiler needs to be replaced.

A boiler’s energy rating is an indicator of its efficiency when used within an average domestic household. It’s a great benchmark for comparing new boilers and can help you work out how much money you could save on energy bills if you replaced your current boiler with a more efficient model.

You can find out the energy efficiency of your boiler by checking its energy rating; you can do this now by selecting the make and model below.

How efficient is your boiler?

Select your boiler using the dropdown below to find out.

Baxi Boilers

ModelTypeFuelEfficiency
Baxi100 HECondensingGas90.9%
Baxi100/2 HE PlusCondensingGas90.9%
Baxi50 HE PlusCondensingGas91.3%
Baxi80 HE PlusCondensingGas90.9%
BaxiAvanta 15h Heat OnlyCondensingGas90.4%
BaxiAvanta 15h Heat OnlyCondensingLPG91.8%
BaxiAvanta 18 h Heat OnlyCondensingGas90.5%
BaxiAvanta 18h Heat OnlyCondensingLPG92.3%
BaxiAvanta 24h Heat OnlyCondensingGas90.3%
BaxiAvanta 24h Heat OnlyCondensingLPG91.7%
BaxiAvanta 28c ExclusiveCondensingGas90.5%
BaxiAvanta 28c ExclusiveCondensingLPG92.3%
BaxiAvanta 30h Heat OnlyCondensingGas90.4%
BaxiAvanta 35c ExclusiveCondensingGas90.4%
BaxiAvanta 35c ExclusiveCondensingLPG92.5%
BaxiAvanta 39c ExclusiveCondensingGas90.4%
BaxiAvanta 39c ExclusiveCondensingLPG92.4%
BaxiAvanta Plus 18s systemCondensingGas90.3%
BaxiAvanta Plus 18s SystemCondensingLPG91.6%
BaxiAvanta Plus 24c CombiCondensingGas90.2%
BaxiAvanta Plus 24c CombiCondensingLPG91.5%
BaxiAvanta Plus 24s SystemCondensingGas90.5%
BaxiAvanta Plus 24s SystemCondensingLPG92.3%
BaxiAvanta Plus 28c CombiCondensingGas90.4%
BaxiAvanta Plus 28c CombiCondensingLPG92.2%
BaxiAvanta Plus 30s systemCondensingGas90.4%
BaxiAvanta Plus 30s SystemCondensingLPG91.9%
BaxiAvanta Plus 35c CombiCondensingGas90.3%
BaxiAvanta Plus 35c CombiCondensingLPG92.4%
BaxiAvanta Plus 39c CombiCondensingGas90.3%
BaxiAvanta Plus 39c CombiCondensingLPG92.3%
BaxiBermuda50/6 InsetNon-CondensingGas78.1%
BaxiBermuda51/5Non-CondensingGas78.0%
BaxiBermuda BBU15 HECondensingGas90.2%
BaxiCombi80 MaxflueNon-CondensingGas78.5%
BaxiCombiInstant 80 eNon-CondensingGas78.6%
BaxiCombi80 HE PlusCondensingGas90.8%
BaxiCombi100 HE PlusCondensingGas90.8%
BaxiCombi80 EcoNon-CondensingGas78.6%
BaxiCombi133 HE PlusCondensingGas90.7%
BaxiCombiInstant 105 HECondensingGas87.3%
BaxiCombiInstant 80 HECondensingGas87.3%
BaxiCombiInstant 105 HECondensingLPG87.1%
BaxiCombiInstant 80 HECondensingLPG87.1%
BaxiCombi105 HECondensingGas87.3%
BaxiCombi80 eNon-CondensingGas78.6%
BaxiCombiInstant 105 eNon-CondensingGas78.5%
BaxiCombi105 eNon-CondensingGas78.5%
BaxiCombi105 HECondensingLPG87.1%
BaxiCombi105 HE ACondensingGas90.1%
BaxiDuo-tec 2 Combi40 GACondensingGas91.1%
BaxiDuo-tec 2 Combi33 GACondensingGas91.1%
BaxiDuo-tec 2 Combi28 GACondensingGas91.1%
BaxiDuo-tec 2 Combi24 GACondensingGas91.1%
BaxiDuo-tec 2 Combi33 GACondensingLPG92.5%
BaxiDuo-tec 2 Combi24 GACondensingLPG92.4%
BaxiDuo-tec 2 Combi40 GACondensingLPG92.4%
BaxiDuo-tec 2 Combi28 GACondensingLPG92.4%
BaxiDuo-tec Combi24 HECondensingGas90.1%
BaxiDuo-tec Combi33 HECondensingGas90.1%
BaxiDuo-tec Combi28 HECondensingGas90.1%
BaxiDuo-tec Combi40 HECondensingGas90.0%
BaxiDuo-tec Combi28 HE LPGCondensingLPG93.2%
BaxiDuo-tec Combi33 HE LPGCondensingLPG93.2%
BaxiDuo-tec Combi24 HE LPGCondensingLPG93.2%
BaxiDuo-tec Combi24 HE ACondensingGas91.1%
BaxiDuo-tec Combi28 HE ACondensingGas91.1%
BaxiDuo-tec Combi33 HE ACondensingGas91.1%
BaxiDuo-tec Combi40 HE ACondensingGas91.1%
BaxiMaxflow CombiFSNon-CondensingGas78.9%
BaxiMaxflow CombiWMNon-CondensingGas79%
BaxiMegaflo 2 System12 Compact GACondensingGas91.2%
BaxiMegaflo 2 System28 Compact GACondensingGas91.2%
BaxiMegaflo 2 System32 Compact GACondensingGas91.2%
BaxiMegaflo 2 System24 Compact GACondensingGas91.2%
BaxiMegaflo 2 System18 Compact GACondensingGas91.2%
BaxiMegaflo 2 System15 Compact GACondensingGas91.2%
BaxiMegaflo 2 System15 Compact GACondensingLPG92.6%
BaxiMegaflo 2 System18 Compact GACondensingLPG92.6%
BaxiMegaflo 2 System12 Compact GACondensingLPG92.6%
BaxiMegaflo 2 System24 Compact GACondensingLPG92.5%
BaxiMegaflo 2 System28 Compact GACondensingLPG92.5%
BaxiMegaflo 2 System32 Compact GACondensingLPG92.5%
BaxiMegaflo System18 HECondensingGas90.2%
BaxiMegaflo System15 HECondensingGas90.2%
BaxiMegaflo System24 HECondensingGas90.2%
BaxiMegaflo System28 HECondensingGas90.2%
BaxiMegaflo System32 HECondensingGas90.1%
BaxiMegaflo System32 HE LPGCondensingLPG93.2%
BaxiMegaflo System28 HE LPGCondensingLPG93.2%
BaxiMegaflo System18 HE LPGCondensingLPG93.2%
BaxiMegaflo System15 HE ACondensingGas91.2%
BaxiMegaflo System18 HE ACondensingGas91.2%
BaxiMegaflo System24 HE ACondensingGas91.2%
BaxiMegaflo System28 HE ACondensingGas91.2%
BaxiMegaflo System32 HE ACondensingGas91.2%
BaxiNeta-tec Combi24 GACondensingGas91.1%
BaxiNeta-tec Combi28 GACondensingGas91.1%
BaxiNeta-tec Combi33 GACondensingGas91.1%
BaxiNeta-tec Combi33 GACondensingLPG92.5%
BaxiNeta-tec Combi28 GACondensingLPG92.4%
BaxiNeta-tec Combi24 GACondensingLPG92.4%
BaxiNeta-tec Plus33 GACondensingGas91.1%
BaxiNeta-tec Plus28 GACondensingGas91.1%
BaxiNeta-tec Plus24 GACondensingGas91.1%
BaxiNeta-tec Plus33 GACondensingLPG92.5%
BaxiNeta-tec Plus28 GACondensingLPG92.4%
BaxiNeta-tec Plus24 GACondensingLPG92.4%
BaxiPlatinum15 HECondensingGas91.3%
BaxiPlatinum28 HECondensingGas90.1%
BaxiPlatinum33 HECondensingGas90.1%
BaxiPlatinum24 HECondensingGas90.1%
BaxiPlatinum 2 Combi40 GACondensingGas91.1%
BaxiPlatinum 2 Combi28 GACondensingGas91.1%
BaxiPlatinum 2 Combi33 GACondensingGas91.1%
BaxiPlatinum Combi24 HECondensingGas90.1%
BaxiPlatinum Combi28 HECondensingGas90.1%
BaxiPlatinum Combi33 HECondensingGas90.1%
BaxiPlatinum Combi40 HECondensingGas90.0%
BaxiPlatinum Combi33 HE ACondensingGas91.1%
BaxiPlatinum Combi28 HE ACondensingGas91.1%
BaxiPlatinum Combi40 HE ACondensingGas91.1%
BaxiPlatinum Combi24 HE ACondensingGas91.1%
BaxiPlatinum System24 HECondensingGas90.1%
BaxiSolo15 HECondensingGas91.3%
BaxiSolo30 HECondensingGas90.9%
BaxiSolo24 HECondensingGas90.9%
BaxiSolo12 HECondensingGas90.5%
BaxiSolo18 HECondensingGas90.4%
BaxiSolo15 HE ACondensingGas91.3%
BaxiSolo24 HE ACondensingGas90.9%
BaxiSolo30 HE ACondensingGas90.9%
BaxiSolo12 HE ACondensingGas90.5%
BaxiSolo18 HE ACondensingGas90.4%
BaxiSolo 3 PFL30Non-CondensingGas79.4%
BaxiSolo 3 PFL40Non-CondensingGas78.4%
BaxiSolo 3 PFL70Non-CondensingGas78.2%
BaxiSolo 3 PFL80Non-CondensingGas79.1%
BaxiSolo 3 PFL60Non-CondensingGas78.5%
BaxiSolo 3 PFL50Non-CondensingGas78.0%
BaxiSolo 3 PFL System30Non-CondensingGas79.4%
BaxiSolo 3 PFL System80Non-CondensingGas78.7%
BaxiSolo 3 PFL System60Non-CondensingGas78.5%
BaxiSolo 3 PFL System40Non-CondensingGas78.4%
BaxiSolo 3 PFL System70Non-CondensingGas78.2%
BaxiSolo 3 PFL System50Non-CondensingGas78.0%
BaxiSystem60/100Non-CondensingGas78.2%
BaxiSystem100 HE PlusCondensingGas90.9%
BaxiSystem35/60Non-CondensingGas78.8%

What are SEDBUK Efficiency Ratings?

From 1999 to 2015 boilers were ranked on the SEDBUK scale which stands for ‘Seasonal Efficiency of a Domestic Boiler in the UK’. While many still refer to SEDBUK as the standard energy rating scale, it was actually replaced in 2015 by the Energy related Products directive, or ErP. It’s directly related to the EU’s ambition to improve the energy efficiency of our homes and achieve the following targets by 2020:

  • 20% reduction in EU greenhouse gas emissions (compared to 1990 levels)
  • 20% improvement in overall energy efficiency (across the EU)
  • 20% more energy produced from renewable resources such as solar or biomass.

Under the current ErP standards, boiler manufacturers are required to label their products with a rating from A++ to G, with G being the least efficient a boiler can be. In September 2019, efficiency grade A+++ will be added and the least efficient class, G, will be removed as an option, removing these products from the market as a result.

How Much Money Could I Save with a More Efficient Boiler

To understand how a new boiler could save you money, you need to consider the energy that an inefficient boiler is wasting. For example, if a boiler is only 70% efficient, for every £1 you spend on heating your home, 30p is being wasted on lost energy. If your new boiler can reach efficiency of 90%, that is just 10p lost of every £1. So that’s a saving of 20p in every £1 which really adds up over time.

The financial savings you could make by replacing your boiler with a more efficient model can be significant, but will vary depending on the size of your home, the fuel used by the boiler and the inefficiency of your existing boiler.

According to the Energy Saving Trust: “Replacing an old gas boiler with a programmer and room thermostat, with a new A-rated condensing boiler with a programmer, room thermostat and thermostatic radiator controls (TRVs) could save you:

Old Boiler ErP RatingEfficiencyDetached houseSemi-detached houseMid-terrace house
D78 – 82%£170£110£100
E74 – 78%£190£125£105
F70-74%£220£145£125
G<70%£320£210£180

Figures taken from the latest research by the Energy Saving Trust. Based on fuel prices as of April 2017.

For new boiler installations visit Boiler Guide to request quotes from independent local and regional heating engineers.