10 year guarantee when installed by a G1 Installer, T&Cs apply To activate this decade long guarantee, G1 Installers simply need to fit a Grant Mag One filter and register the boiler within thirty days of installation via the online G1 Portal or G1 Click app. Manufacturer Stock Code: VTXOM15/26 EAN Code: 5060090370914 Width: 505 mm Depth: 800 mm Height: 908 mm Sub-Category: Domestic Boiler Colour: White Brand: Grant Warranty: 10 Years Energy Efficiency: A Application: Domestic Boiler Model: Vortex Pro Ready for HVO: Yes Output: 26 kW Ready for 20% Hydrogen: No Category: Heat Only Fuel Type: Oil Includes Magnetic Filter: No