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Grant - Boiler Efficiency Ratings

Boiler Efficiency Rating

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.

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.

For new boiler installations call British Gas Boilers on 0800 327 7119 for a no-obligation quote. Alternatively visit Boiler Guide to request quotes from independent local and regional heating engineers.

Grant Boilers

ModelTypeFuelEfficiencyMore Info
Grant Combi 90 Mk II Non-Condensing Oil 82.9% More Info
Grant Combi 70 Mk II Non-Condensing Oil 82.5% More Info
Grant Combi 70 V3 Non-Condensing Oil 82.5% More Info
Grant Combi 90 V3 Non-Condensing Oil 82.7% More Info
Grant Combi Max Non-Condensing Oil 82.2% More Info
Grant Euroflame Kitchen / Utility 70-90 Non-Condensing Oil 85.3% More Info
Grant Euroflame Kitchen / Utility 50-70 Non-Condensing Oil 85.3% More Info
Grant Euroflame Outdoor Module 50-70 Non-Condensing Oil 85.3% More Info
Grant Euroflame System 50-90 Non-Condensing Oil 85.3% More Info
Grant Euroflame Boilerhouse 50-70 Non-Condensing Oil 85.3% More Info
Grant Euroflame Boilerhouse 70-90 Non-Condensing Oil 85.3% More Info
Grant Euroflame Outdoor Module 70-90 Non-Condensing Oil 85.3% More Info
Grant Euroflame Kitchen/Utility 90-120 Non-Condensing Oil 85.2% More Info
Grant Euroflame 90-120 Outdoor Non-Condensing Oil 85.2% More Info
Grant Euroflame 90-120 System Kitchen Utility Non-Condensing Oil 85.2% More Info
Grant Euroflame 90-120 Boilerhouse Non-Condensing Oil 85.2% More Info
Grant Euroflame Condensing Boilerhouse 50-70 Condensing Oil 93.0% More Info
Grant Euroflame Condensing Indoor 50-70 Condensing Oil 93.0% More Info
Grant Euroflame Condensing Module 50-70 Condensing Oil 93.0% More Info
Grant Euroflame Condensing Module 70-90 Condensing Oil 92.4% More Info
Grant Euroflame Condensing Boilerhouse 70-90 Condensing Oil 92.4% More Info
Grant Euroflame Condensing Indoor 70-90 Condensing Oil 92.4% More Info
Grant Euroflame Condensing Module 90-120 Condensing Oil 92.1% More Info
Grant Euroflame Condensing Boilerhouse 90-120 Condensing Oil 92.1% More Info
Grant Euroflame Condensing Indoor 90-120 Condensing Oil 92.1% More Info
Grant Multipass Boilerhouse 110-140 Non-Condensing Oil 85.7% More Info
Grant Multipass Boilerhouse 70-90 Non-Condensing Oil 85.7% More Info
Grant Multipass Kitchen 70-90 Non-Condensing Oil 85.7% More Info
Grant Multipass Boilerhouse 90-110 Non-Condensing Oil 85.7% More Info
Grant Multipass System 50-70 Non-Condensing Oil 85.7% More Info
Grant Multipass Outdoor 110-140 Non-Condensing Oil 85.7% More Info
Grant Multipass System 110-140 Non-Condensing Oil 85.7% More Info
Grant Multipass System 90-110 Non-Condensing Oil 85.7% More Info
Grant Multipass System 70-90 Non-Condensing Oil 85.7% More Info
Grant Multipass Boilerhouse 140-160 Non-Condensing Oil 85.7% More Info
Grant Multipass Kitchen 160-200 Non-Condensing Oil 85.7% More Info
Grant Multipass Kitchen 50-70 Non-Condensing Oil 85.7% More Info
Grant Multipass Kitchen 140-160 Non-Condensing Oil 85.7% More Info
Grant Multipass Kitchen 90-110 Non-Condensing Oil 85.7% More Info
Grant Multipass Kitchen 110-140 Non-Condensing Oil 85.7% More Info
Grant Multipass Boilerhouse 160-200 Non-Condensing Oil 85.7% More Info
Grant Outdoor Combi Mk II Non-Condensing Oil 82.9% More Info
Grant Outdoor Combi 90 V3 Non-Condensing Oil 82.7% More Info
Grant Outdoor Combi Max Non-Condensing Oil 82.2% More Info
Grant Vortex 26-36-S Utility System Boiler Condensing Oil 97.0% More Info
Grant Vortex 26-36 Utility Boiler Condensing Oil 97.0% More Info
Grant Vortex 36 Condensing Oil 97.0% More Info
Grant Vortex 36S Condensing Oil 97.0% More Info
Grant Vortex Outdoor Module 26-36 Condensing Oil 97% More Info
Grant Vortex 26 S Condensing Oil 95.0% More Info
Grant Vortex 15-26 Kitchen Boiler Condensing Oil 95.0% More Info
Grant Vortex Utility System 15-26S Condensing Oil 95.0% More Info
Grant Vortex 15-26S Kitchen Boiler Condensing Oil 95.0% More Info
Grant Vortex Utility 15-26 Condensing Oil 95.0% More Info
Grant Vortex Outdoor Module 15-26 Condensing Oil 95.0% More Info
Grant Vortex 26 Condensing Oil 95% More Info
Grant Vortex 20 Condensing Oil 94.6% More Info
Grant Vortex 20 S Condensing Oil 94.6% More Info
Grant Vortex Outdoor Condensing Combi 36 Condensing Oil 94.2% More Info
Grant Vortex Utility 46-58 Condensing Oil 94.1% More Info
Grant Vortex 15 Condensing Oil 94.0% More Info
Grant Vortex 15 S Condensing Oil 94.0% More Info
Grant Vortex Utility 58-70 Condensing Oil 93.6% More Info
Grant Vortex Outdoor Module 36-46 Condensing Oil 92.6% More Info
Grant Vortex Utility 36-46 Condensing Oil 92.6% More Info
Grant Vortex Utility System 36-46S Condensing Oil 92.6% More Info
Grant Vortex Outdoor Condensing Combi 26 Condensing Oil 92.2% More Info
Grant Vortex 20G Boilerhouse Condensing Oil 96.1% More Info
Grant Vortex 20G Boilerhouse System Condensing Oil 96.1% More Info
Grant Vortex 20G Outdoor Module Condensing Oil 96.1% More Info
Grant Vortex 20G Outdoor Module System Condensing Oil 96.1% More Info
Grant Vortex 20G Utility Condensing Oil 96.1% More Info
Grant Vortex 20G Utility System Condensing Oil 96.1% More Info
Grant Vortex 26-36 Boilerhouse Condensing Oil 97% More Info
Grant Vortex 26-36 Boilerhouse System Condensing Oil 97.2% More Info
Grant Vortex 26-36 Outdoor Module System Condensing Oil 97% More Info
Grant Vortex 30G Boilerhouse Condensing Oil 95.6% More Info
Grant Vortex 30G Boilerhouse System Condensing Oil 95.6% More Info
Grant Vortex 30G Outdoor Module Condensing Oil 95.6% More Info
Grant Vortex 30G Outdoor Module System Condensing Oil 95.6% More Info
Grant Vortex 30G Utility Condensing Oil 95.6% More Info
Grant Vortex 30G Utility System Condensing Oil 95.6% More Info
Grant Vortex Condensing Combi 36 Condensing Oil 94.2% More Info
Grant Vortex Condensing Combi 26 Condensing Oil 92.2% More Info
Grant Vortex Condensing Combi 21 Condensing Oil 90.2% More Info
Grant Vortex Eco Utility 15-21 Condensing Oil 93.0% More Info
Grant Vortex Eco External 15-21 Condensing Oil 93.0% More Info
Grant Vortex Eco External 21-26 Condensing Oil 92.4% More Info
Grant Vortex Eco Utility 21-26 Condensing Oil 92.4% More Info
Grant Vortex Eco Utility 26-35 Condensing Oil 92.1% More Info
Grant Vortex Eco External 26-35 Condensing Oil 92.1% More Info
Grant Vortex Eco Wall Hung 12-16 Condensing Oil 94.9% More Info
Grant Vortex Eco Wall Hung 16-21 Condensing Oil 93.8% More Info
Grant Vortex Eco Wall Hung External 12-16 Condensing Oil 94.9% More Info
Grant Vortex Eco Wall Hung External 16-21 Condensing Oil 93.8% More Info
Grant Vortex Eco Wall Hung External System 12-16 Condensing Oil 94.9% More Info
Grant Vortex Eco Wall Hung External System 16-21 Condensing Oil 93.8% More Info
Grant Vortex Eco Wall Hung System 12-16 Condensing Oil 94.9% More Info
Grant Vortex Eco Wall Hung System 16-21 Condensing Oil 93.8% More Info
Grant Vortex Outdoor Combi 21 Condensing Oil 90.2% More Info
Grant Vortex Outdoor Module 15-21 Condensing Oil 93% More Info
Grant Vortex Pro Boilerhouse 36-46 Condensing Oil 92.6% More Info
Grant Vortex Pro Boilerhouse 46-58 Condensing Oil 94.1% More Info
Grant Vortex Pro Boilerhouse 58-70 Condensing Oil 93.6% More Info
Grant Vortex Pro External 46-58 Condensing Oil 94.1% More Info
Grant Vortex Pro External 58-70 Condensing Oil 93.6% More Info
Grant Vortex Utility 15-21 Condensing Oil 93% More Info