Each Vortex Pro External oil boiler combines Grant’s proven condensing boiler technology with the latest Riello RDB compact burner. Grant Vortex Pro External modules offer a factory fitted multi-directional flue, high quality external powder coated casing, built-in frost protection, mains isolating switch and a test switch. Sealed system kits are also available for these oil-fired boilers, and each model has a factory fitted frost stat and condensate state.

• 5 years guarantee when installed by a G1 Installer terms and conditions apply
• Available in outputs of between 15 kW up to 70 kW
• Incredible space heating efficiencies of 90.0 to 94.5 percentage
• Sealed system kits available for the 15 kW to 26 kW and 26 kW to 46 kW models
• Factory fitted multi-directional flue saves time with installation
• High quality, external powder coated casing and built-in frost protection designed for all weather conditions
• Quiet operation
• This range is biofuel compatible depending on the type of biofuel and blend percentage
• Grant's unique vortex stainless steel heat exchanger