Firebird - 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.

Firebird Boilers

ModelTypeFuelEfficiency
FirebirdBoilerhouse S90-120Non-CondensingOil85.7%
FirebirdBoilerhouse S150-200Non-CondensingOil85.7%
FirebirdBoilerhouse S120-150Non-CondensingOil85.7%
FirebirdBoilerhouse S70-90Non-CondensingOil85.5%
FirebirdBoilerhouse S200-250Non-CondensingOil85.4%
FirebirdBoilerhouse S50-70Non-CondensingOil85.0%
FirebirdCombi115Non-CondensingOil83%
FirebirdCombi70-90Non-CondensingOil82.2%
FirebirdCombi90Non-CondensingOil83%
FirebirdCombi90-120Non-CondensingOil82.9%
FirebirdCombi50-70Non-CondensingOil82.4%
FirebirdCombi C20CondensingOil90.7%
FirebirdCombi C26CondensingOil90.6%
FirebirdCombi C35CondensingOil90.3%
FirebirdCombipac115Non-CondensingOil83.0%
FirebirdCombipac70-90Non-CondensingOil82.2%
FirebirdCombiPac90Non-CondensingOil83.0%
FirebirdCombipac90-120Non-CondensingOil82.9%
FirebirdCombipac50-70Non-CondensingOil82.4%
FirebirdCombipac C20CondensingOil90.7%
FirebirdCombipac C26CondensingOil90.6%
FirebirdCombipac C35CondensingOil90.3%
FirebirdEnviromax Combi C20CondensingOil91.1%
FirebirdEnviromax Combi C20kWCondensingOil92.0%
FirebirdEnviromax Combi C26CondensingOil91.3%
FirebirdEnviromax Combi C26kWCondensingOil92.0%
FirebirdEnviromax Combi C35CondensingOil90.2%
FirebirdEnviromax Combi C35kWCondensingOil91.6%
FirebirdEnviromax Combipac C20CondensingOil91.1%
FirebirdEnviromax Combipac C20kWCondensingOil92.0%
FirebirdEnviromax Combipac C26CondensingOil91.3%
FirebirdEnviromax Combipac C26kWCondensingOil92.0%
FirebirdEnviromax Combipac C35CondensingOil90.2%
FirebirdEnviromax Combipac C35kWCondensingOil91.6%
FirebirdEnviromax HeatpacC12/18 kWCondensingOil95.2%
FirebirdEnviromax Heatpac C20CondensingOil93.9%
FirebirdEnviromax Heatpac C20kWCondensingOil94.8%
FirebirdEnviromax Heatpac C26CondensingOil94.1%
FirebirdEnviromax Heatpac C26kWCondensingOil94.8%
FirebirdEnviromax Heatpac C35CondensingOil93.0%
FirebirdEnviromax Heatpac C35kWCondensingOil94.4%
FirebirdEnviromax Heatpac C44CondensingOil93.6%
FirebirdEnviromax Heatpac C58CondensingOil92.7%
FirebirdEnviromax Heatpac C73CondensingOil92.0%
FirebirdEnviromax Kitchen C20CondensingOil93.9%
FirebirdEnviromax Kitchen C20kWCondensingOil94.8%
FirebirdEnviromax Kitchen C26CondensingOil94.1%
FirebirdEnviromax Kitchen C26kWCondensingOil94.8%
FirebirdEnviromax Kitchen C35CondensingOil93.0%
FirebirdEnviromax Kitchen C35kWCondensingOil94.4%
FirebirdEnviromax Kitchen C44CondensingOil93.6%
FirebirdEnviromax Kitchen C58CondensingOil92.7%
FirebirdEnviromax Kitchen C73CondensingOil92.0%
FirebirdEnviromax PopularC12/18KWCondensingOil95.2%
FirebirdEnviromax Popular C20CondensingOil93.9%
FirebirdEnviromax Popular C20kWCondensingOil94.8%
FirebirdEnviromax Popular C26CondensingOil94.1%
FirebirdEnviromax Popular C26kWCondensingOil94.8%
FirebirdEnviromax Popular C35CondensingOil93.0%
FirebirdEnviromax Popular C35kWCondensingOil94.4%
FirebirdEnviromax Popular C44CondensingOil93.6%
FirebirdEnviromax Popular C58CondensingOil92.7%
FirebirdEnviromax Popular C73CondensingOil92.0%
FirebirdEnviromax System C20CondensingOil93.9%
FirebirdEnviromax System C20kWCondensingOil94.8%
FirebirdEnviromax System C26CondensingOil94.1%
FirebirdEnviromax System C26kWCondensingOil94.8%
FirebirdEnviromax System C35CondensingOil93.0%
FirebirdEnviromax System C35kWCondensingOil94.4%
FirebirdEnviromax System C44CondensingOil93.6%
FirebirdEnviromax Systempac C20CondensingOil93.9%
FirebirdEnviromax Systempac C20kWCondensingOil94.8%
FirebirdEnviromax Systempac C26CondensingOil94.1%
FirebirdEnviromax Systempac C26kWCondensingOil94.8%
FirebirdEnviromax Systempac C35CondensingOil93.0%
FirebirdEnviromax Systempac C35kWCondensingOil94.4%
FirebirdEnviromax Systempac C44CondensingOil93.6%
FirebirdEnviromax Utility C20CondensingOil93.9%
FirebirdEnviromax Utility C20kWCondensingOil94.8%
FirebirdEnviromax Utility C26CondensingOil94.1%
FirebirdEnviromax Utility C26kWCondensingOil94.8%
FirebirdEnviromax Utility C35CondensingOil93.0%
FirebirdEnviromax Utility C35kWCondensingOil94.4%
FirebirdHeatpac90-120Non-CondensingOil85.7%
FirebirdHeatpac120-150Non-CondensingOil85.7%
FirebirdHeatpac150-200Non-CondensingOil85.7%
FirebirdHeatpac70-90Non-CondensingOil85.5%
FirebirdHeatpac200-250Non-CondensingOil85.4%
FirebirdHeatpac 70Non-CondensingOil85.0%
FirebirdHeatpac 70 SystemNon-CondensingOil85.0%
FirebirdHeatpac 90-120 SystemNon-CondensingOil85.7%
FirebirdHeatpac C20CondensingOil93.5%
FirebirdHeatpac C26CondensingOil93.4%
FirebirdHeatpac C35CondensingOil93.1%
FirebirdHeatpac S90-120Non-CondensingOil85.7%
FirebirdHeatpac S70-90Non-CondensingOil85.5%
FirebirdHeatpac Sealed System70-90Non-CondensingOil85.5%
FirebirdKitchen C20CondensingOil93.5%
FirebirdKitchen C26CondensingOil93.4%
FirebirdKitchen C35CondensingOil93.1%
FirebirdOylympic Boilerhouse90-115Non-CondensingOil85.7%
FirebirdOylympic Boilerhouse70 - 90Non-CondensingOil85.5%
FirebirdOylympic Boilerhouse50-82Non-CondensingOil85.5%
FirebirdOylympic Boilerhouse50 - 70Non-CondensingOil85.0%
FirebirdOylympic De Luxe50-82Non-CondensingOil85.5%
FirebirdOylympic Deluxe70-90Non-CondensingOil85.5%
FirebirdOylympic DeLuxe50-70Non-CondensingOil85.0%
FirebirdOylympic S90-115Non-CondensingOil85.7%
FirebirdOylympic S70-90Non-CondensingOil85.5%
FirebirdOylympic S50-82Non-CondensingOil85.5%
FirebirdOylympic S50-70Non-CondensingOil85.0%
FirebirdPopular90-120Non-CondensingOil85.7%
FirebirdPopular150-200Non-CondensingOil85.7%
FirebirdPopular120-150Non-CondensingOil85.7%
FirebirdPopular50-90Non-CondensingOil85.5%
FirebirdPopular200-250Non-CondensingOil85.4%
FirebirdPopular50-70Non-CondensingOil85.0%
FirebirdRhino90-120 KitchenNon-CondensingOil85.7%
FirebirdRhino150-200 BoilerhouseNon-CondensingOil85.7%
FirebirdRhino120-150 BoilerhouseNon-CondensingOil85.7%
FirebirdRhino150-200 KitchenNon-CondensingOil85.7%
FirebirdRhino90-120 BoilerhouseNon-CondensingOil85.7%
FirebirdRhino120-150 KitchenNon-CondensingOil85.7%
FirebirdRhino50-90 KitchenNon-CondensingOil85.5%
FirebirdRhino50-90 BoilerhouseNon-CondensingOil85.5%
FirebirdRhino200-250 KitchenNon-CondensingOil85.4%
FirebirdRhino200-250 BoilerhouseNon-CondensingOil85.4%
FirebirdRhino Heatpac90-120Non-CondensingOil85.7%
FirebirdRhino Heatpac50-90Non-CondensingOil85.5%
FirebirdRhino Slimline Heatpac50/90Non-CondensingOil85.5%
FirebirdRoomsealed Popular (Hideaway)90-120Non-CondensingOil85.7%
FirebirdRoomsealed Popular (Hideaway)120-150Non-CondensingOil85.7%
FirebirdRoomsealed Popular (Hideaway)50 - 90Non-CondensingOil85.5%
FirebirdS (White Cased)120-150Non-CondensingOil85.7%
FirebirdS (White cased)90-120Non-CondensingOil85.7%
FirebirdS (White Cased)150-200Non-CondensingOil85.7%
FirebirdS (White Cased)70-90Non-CondensingOil85.5%
FirebirdS (White Cased)200-250Non-CondensingOil85.4%
FirebirdS (White Cased)50-70Non-CondensingOil85.0%
FirebirdS (White Cased) 70 SystemNon-CondensingOil85.0%
FirebirdS (White Cased) 90-120 SystemNon-CondensingOil85.7%
FirebirdSealed System70-90Non-CondensingOil85.5%
FirebirdSilver BoiilerhouseC20kWCondensingOil93.8%
FirebirdSilver BoiilerhouseC35KWCondensingOil92.9%
FirebirdSilver BoilerhouseCR20CondensingOil92.6%
FirebirdSilver BoilerhouseCR26CondensingOil92.3%
FirebirdSilver BoilerhouseCR35CondensingOil90.2%
FirebirdSilver SystemC20kWCondensingOil93.8%
FirebirdSilver SystemC26kWCondensingOil93.7%
FirebirdSilver SystemC35kWCondensingOil92.9%
FirebirdSilver System CR20CondensingOil92.6%
FirebirdSilver System CR26CondensingOil92.3%
FirebirdSilver System CR35CondensingOil90.2%
FirebirdSilver UtilityCR20CondensingOil92.6%
FirebirdSilver UtilityCR26CondensingOil92.3%
FirebirdSilver UtilityCR35CondensingOil90.2%
FirebirdSilver UtilityC20kWCondensingOil93.8%
FirebirdSilver UtilityC26kWCondensingOil93.7%
FirebirdSilver UtilityC35kWCondensingOil92.9%
FirebirdSilverpacCR20CondensingOil92.6%
FirebirdSilverpacCR26CondensingOil92.3%
FirebirdSilverpacCR35CondensingOil90.2%
FirebirdSilverpacC20kWCondensingOil93.8%
FirebirdSilverpacC26kWCondensingOil93.7%
FirebirdSilverpacC35kWCondensingOil92.9%
FirebirdSystem C20CondensingOil93.5%
FirebirdSystem C26CondensingOil93.4%
FirebirdSystem C35CondensingOil93.1%
FirebirdSystempac C20CondensingOil93.5%
FirebirdSystempac C26CondensingOil93.4%
FirebirdSystempac C35CondensingOil93.1%

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
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.