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Grandee Boilers Boiler Efficiency Rating, Repair & Service

Model Type Fuel Efficiency
Grandee GCCF 15/23 Condensing Oil 88.5%
Grandee GCCF 23/30 Condensing Oil 88.1%
Grandee GCCW 15/22 Condensing Oil 88.5%
Grandee GCCW 15/22 Ext Condensing Oil 88.5%
Grandee GCCW 23/28 Condensing Oil 88.1%
Grandee GCCW 23/28 Ext Condensing Oil 88.1%
Grandee GCF 10-15 Condensing Oil 89.5%
Grandee GCF 15/23 Condensing Oil 90.2%
Grandee GCF 23/30 Condensing Oil 89.8%
Grandee GCW 10-15 Condensing Oil 89.5%
Grandee GCW 10-15 Ext Condensing Oil 89.5%
Grandee GCW 15/22 Condensing Oil 90.2%
Grandee GCW 15/22 Ext Condensing Oil 90.2%
Grandee GCW 23/28 Condensing Oil 89.8%
Grandee GCW 23/28 Ext Condensing Oil 89.8%
Grandee GSCF 10-15 Condensing Oil 89.5%
Grandee GSCF 15/23 Condensing Oil 90.2%
Grandee GSCF 23/30 Condensing Oil 89.8%
Grandee GSCW 10-15 Condensing Oil 89.5%
Grandee GSCW 10-15 Ext Condensing Oil 89.5%
Grandee GSCW 15/22 Condensing Oil 90.2%
Grandee GSCW 15/22 Ext Condensing Oil 90.2%
Grandee GSCW 23/28 Condensing Oil 89.8%
Grandee GSCW 23/28 Ext Condensing Oil 89.8%