Ferroli - 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.

Ferroli Boilers

FerroliArena 30 ACondensingGas89.9%
FerroliArena 30 AMk2CondensingGas90.4%
FerroliArena 30 CCondensingGas89.8%
FerroliArena 30 CMk2CondensingGas90.3%
FerroliDomicompactF 30 BCondensingGas87.7%
FerroliDomicompactF 24 BCondensingGas87.7%
FerroliDomicompactF 24 B LPGCondensingLPG88.7%
FerroliDomicompactF 30 B LPGCondensingLPG88.7%
FerroliDOMIcondens HE26CCondensingGas90.0%
FerroliDOMIcondens HE26CCondensingLPG91.1%
FerroliDomina 80Non-CondensingGas79.6%
FerroliEconcept50 A LPGCondensingLPG92.4%
FerroliF 24 BCondensingGas87.7%
FerroliF 24 B LPGCondensingLPG88.7%
FerroliF 30 BCondensingGas87.7%
FerroliF 30 B LPGCondensingLPG88.7%
FerroliHawk IIHawk IINon-CondensingGas68%
FerroliMaxima35 S LPGCondensingLPG93%
FerroliMaxima35 C LPGCondensingLPG92.9%
FerroliModena 102Non-CondensingGas78.0%
FerroliModena 18S HECondensingGas90.4%
FerroliModena 18S HECondensingLPG92.3%
FerroliModena 25C HECondensingGas90.3%
FerroliModena 25S HECondensingGas90.4%
FerroliModena 25S HECondensingLPG92.3%
FerroliModena 27C HECondensingGas90.3%
FerroliModena 27C HECondensingLPG92.2%
FerroliModena 30C HECondensingGas90.3%
FerroliModena 32C HECondensingGas90.3%
FerroliModena 32S HECondensingGas90.4%
FerroliModena 32S HECondensingLPG92.3%
FerroliModena 80Non-CondensingGas79.6%
FerroliOptima 1000Non-CondensingGas70%
FerroliOptima 200Non-CondensingGas74.2%
FerroliOptima 2000CondensingGas83%
FerroliOptima 2001CondensingGas86.1%
FerroliOptima 201Non-CondensingGas74.2%
FerroliOptima 600Non-CondensingGas70%
FerroliOptima 700Non-CondensingGas70%
FerroliOptima 800Non-CondensingGas70%
FerroliOptima 900Non-CondensingGas70%
FerroliOptimaxHE 31 SCondensingGas90.6%
FerroliOptimaxHE 38 CCondensingGas90.5%
FerroliOptimaxHE 25 SCondensingGas90.5%
FerroliOptimaxHE 31 CCondensingGas90.4%
FerroliOptimax25 SCondensingGas90.4%
FerroliOptimax25 CCondensingGas90.3%
FerroliOptimax25 OV LPGCondensingLPG92.4%
FerroliOptimax25 S LPGCondensingLPG92.4%
FerroliOptimax25 C LPGCondensingLPG92.3%
FerroliOptimax25 OVCondensingGas90.4%
FerroliOptimax HE Plus35 SCondensingGas90.6%
FerroliOptimax HE Plus25 OVCondensingGas90.5%
FerroliOptimax HE Plus18 SCondensingGas90.5%
FerroliOptimax HE Plus25 SCondensingGas90.5%
FerroliOptimax HE Plus38 CCondensingGas90.5%
FerroliOptimax HE Plus18 OVCondensingGas90.5%
FerroliOptimax HE Plus31 CCondensingGas90.4%
FerroliOptimax HE Plus35 SCondensingLPG92.6%
FerroliOptimax HE Plus38 CCondensingLPG92.5%
FerroliOptimax HE Plus18 OVCondensingLPG92.5%
FerroliOptimax HE Plus18 SCondensingLPG92.5%
FerroliOptimax HE Plus25 SCondensingLPG92.1%
FerroliOptimax HE Plus25 OVCondensingLPG92.1%
FerroliOptimax HE Plus31 CCondensingLPG92.0%
FerroliSigma 20-40Non-CondensingGas78.2%
FerroliSigma 30Non-CondensingGas76.9%
FerroliSigma 40Non-CondensingGas77.7%
FerroliSigma 50Non-CondensingGas77.3%
FerroliSigma 60Non-CondensingGas77.5%
FerroliSigma 60-100Non-CondensingGas78.3%
FerroliSYS 10-23Non-CondensingGas78.9%
FerroliTempra 12Non-CondensingGas78.1%
FerroliTempra 18Non-CondensingGas78.1%
FerroliTempra 24Non-CondensingGas78.0%
FerroliTempra 30Non-CondensingGas78.1%

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

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.