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Grant Boilers Boiler Efficiency Rating

Grant are a boiler manufacturer that are focussed on providing UK homes with highly efficienct unit that can help to lower CO2 emissions and your energy bills. Their condensing oil boilers have picked up several awards for their efficiency which has seen them gain a growing reputation for their quality.

With a selection of Combi boilers and an extensive range of Regular boilers, with output ratings of up to 70kW, Grant have a unit for just about any home.

ModelTypeFuelEfficiency
Grant Combi 70 Mk IINon-CondensingOil83.0%
Grant Combi 70 V3Non-CondensingOil83.0%
Grant Combi 90 Mk IINon-CondensingOil83.9%
Grant Combi 90 V3Non-CondensingOil82.7%
Grant Combi MaxNon-CondensingOil82.2%
Grant Euroflame 90-120 BoilerhouseNon-CondensingOil84.4%
Grant Euroflame 90-120 OutdoorNon-CondensingOil84.4%
Grant Euroflame 90-120 System Kitchen UtilityNon-CondensingOil84.4%
Grant Euroflame Boilerhouse 50-70Non-CondensingOil84.7%
Grant Euroflame Boilerhouse 70-90Non-CondensingOil84.7%
Grant Euroflame Condensing Boilerhouse 50-70CondensingOil90.8%
Grant Euroflame Condensing Boilerhouse 70-90CondensingOil90.6%
Grant Euroflame Condensing Boilerhouse 90-120CondensingOil90.3%
Grant Euroflame Condensing Indoor 50-70CondensingOil90.8%
Grant Euroflame Condensing Indoor 70-90CondensingOil90.6%
Grant Euroflame Condensing Indoor 90-120CondensingOil90.3%
Grant Euroflame Condensing Module 50-70CondensingOil90.8%
Grant Euroflame Condensing Module 70-90CondensingOil90.6%
Grant Euroflame Condensing Module 90-120CondensingOil90.3%
Grant Euroflame Kitchen / Utility 50-70Non-CondensingOil84.7%
Grant Euroflame Kitchen / Utility 70-90Non-CondensingOil84.7%
Grant Euroflame Kitchen/Utility 90-120Non-CondensingOil84.4%
Grant Euroflame Outdoor Module 50-70Non-CondensingOil84.7%
Grant Euroflame Outdoor Module 70-90Non-CondensingOil84.7%
Grant Euroflame System 50-90Non-CondensingOil84.7%
Grant Multipass Boilerhouse 110-140Non-CondensingOil85.4%
Grant Multipass Boilerhouse 140-160Non-CondensingOil85.6%
Grant Multipass Boilerhouse 160-200Non-CondensingOil85.6%
Grant Multipass Boilerhouse 70-90Non-CondensingOil85.6%
Grant Multipass Boilerhouse 90-110Non-CondensingOil85.4%
Grant Multipass Kitchen 110-140Non-CondensingOil85.4%
Grant Multipass Kitchen 140-160Non-CondensingOil85.6%
Grant Multipass Kitchen 160-200Non-CondensingOil85.6%
Grant Multipass Kitchen 50-70Non-CondensingOil85.6%
Grant Multipass Kitchen 70-90Non-CondensingOil85.6%
Grant Multipass Kitchen 90-110Non-CondensingOil85.4%
Grant Multipass Outdoor 110-140Non-CondensingOil85.4%
Grant Multipass System 110-140Non-CondensingOil85.4%
Grant Multipass System 50-70Non-CondensingOil85.6%
Grant Multipass System 70-90Non-CondensingOil85.6%
Grant Multipass System 90-110Non-CondensingOil85.4%
Grant Outdoor Combi 90 V3Non-CondensingOil82.7%
Grant Outdoor Combi MaxNon-CondensingOil82.2%
Grant Outdoor Combi Mk IINon-CondensingOil83.9%
Grant Vortex 15CondensingOil91.1%
Grant Vortex 15 SCondensingOil91.1%
Grant Vortex 15-26 Kitchen BoilerCondensingOil91.9%
Grant Vortex 15-26S Kitchen BoilerCondensingOil91.9%
Grant Vortex 20CondensingOil91.5%
Grant Vortex 20 SCondensingOil91.5%
Grant Vortex 20G BoilerhouseCondensingOil92.9%
Grant Vortex 20G Boilerhouse SystemCondensingOil92.9%
Grant Vortex 20G Outdoor ModuleCondensingOil92.9%
Grant Vortex 20G Outdoor Module SystemCondensingOil92.9%
Grant Vortex 20G UtilityCondensingOil92.9%
Grant Vortex 20G Utility SystemCondensingOil92.9%
Grant Vortex 26CondensingOil91.9%
Grant Vortex 26 SCondensingOil91.9%
Grant Vortex 26-36 BoilerhouseCondensingOil93.3%
Grant Vortex 26-36 Boilerhouse SystemCondensingOil93.3%
Grant Vortex 26-36 Outdoor Module SystemCondensingOil93.3%
Grant Vortex 26-36 Utility BoilerCondensingOil93.3%
Grant Vortex 26-36-S Utility System BoilerCondensingOil93.3%
Grant Vortex 30G BoilerhouseCondensingOil92.5%
Grant Vortex 30G Boilerhouse SystemCondensingOil92.5%
Grant Vortex 30G Outdoor ModuleCondensingOil92.5%
Grant Vortex 30G Outdoor Module SystemCondensingOil92.5%
Grant Vortex 30G UtilityCondensingOil92.5%
Grant Vortex 30G Utility SystemCondensingOil92.5%
Grant Vortex 36CondensingOil93.3%
Grant Vortex 36SCondensingOil93.3%
Grant VORTEX BOILERHOUSE 15-21CondensingOil90.8%
Grant VORTEX BOILERHOUSE 21-26CondensingOil90.6%
Grant VORTEX BOILERHOUSE 26-35CondensingOil90.3%
Grant Vortex Condensing Combi 21CondensingOil89.5%
Grant Vortex Condensing Combi 26CondensingOil90.2%
Grant Vortex Condensing Combi 36CondensingOil91.6%
Grant Vortex Eco External 15-21CondensingOil90.8%
Grant Vortex Eco External 21-26CondensingOil90.6%
Grant Vortex Eco External 26-35CondensingOil90.3%
Grant Vortex Eco External System 15-21CondensingOil90.8%
Grant Vortex Eco External System 21-26CondensingOil90.6%
Grant Vortex Eco External System 26-35CondensingOil90.3%
Grant Vortex Eco Utility 15-21CondensingOil90.8%
Grant Vortex Eco Utility 21-26CondensingOil90.6%
Grant Vortex Eco Utility 26-35CondensingOil90.3%
Grant Vortex Eco Utility System 15-21CondensingOil90.8%
Grant Vortex Eco Utility System 21-26CondensingOil90.6%
Grant Vortex Eco Utility System 26-35CondensingOil90.3%
Grant Vortex Eco Wall Hung 12-16CondensingOil91.9%
Grant Vortex Eco Wall Hung 16-21CondensingOil91.6%
Grant Vortex Eco Wall Hung External 12-16CondensingOil91.9%
Grant Vortex Eco Wall Hung External 16-21CondensingOil91.6%
Grant Vortex Eco Wall Hung External System 12-16CondensingOil91.9%
Grant Vortex Eco Wall Hung External System 16-21CondensingOil91.6%
Grant Vortex Eco Wall Hung System 12-16CondensingOil91.9%
Grant Vortex Eco Wall Hung System 16-21CondensingOil91.6%
Grant Vortex Outdoor Combi 21CondensingOil89.5%
Grant Vortex Outdoor Condensing Combi 26CondensingOil90.2%
Grant Vortex Outdoor Condensing Combi 36CondensingOil91.6%
Grant Vortex Outdoor Module 15-21CondensingOil91.2%
Grant Vortex Outdoor Module 15-26CondensingOil91.9%
Grant Vortex Outdoor Module 26-36CondensingOil93.3%
Grant Vortex Outdoor Module 36-46CondensingOil90.7%
Grant Vortex Pro Boilerhouse 36-46CondensingOil90.7%
Grant Vortex Pro Boilerhouse 46-58CondensingOil91.7%
Grant Vortex Pro Boilerhouse 58-70CondensingOil91.4%
Grant Vortex PRO Combi XS 26CondensingOil90.0%
Grant Vortex Pro External 46-58CondensingOil91.7%
Grant Vortex Pro External 58-70CondensingOil91.4%
Grant Vortex Utility 15-21CondensingOil91.2%
Grant Vortex Utility 15-26CondensingOil91.9%
Grant Vortex Utility 36-46CondensingOil90.7%
Grant Vortex Utility 46-58CondensingOil91.7%
Grant Vortex Utility 58-70CondensingOil91.4%
Grant Vortex Utility System 15-26SCondensingOil91.9%
Grant Vortex Utility System 36-46SCondensingOil90.7%