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: VTX46/70 EAN Code: 5056003782394 Sub-Category: Domestic Boiler Sub-Category: Domestic Boiler Brand: Grant Warranty: 10 Years Boiler Model: Vortex Pro Output: 70 kW Ready for 20% Hydrogen: No Category: Heat Only Fuel Type: Oil Includes Magnetic Filter: No