Grant Vortex Blue Combi features large heat exchangers which greatly increase the hot water performance. It protects itself in the unlikely event of system water loss with a low system pressure cut off switch. Besides, the boiler features two highly accurate electronic temperature controls which allow operation in condensing mode on central heating whilst maintaining its instant hot water production.

• Internal, external and combi models
• 15 Output from 21 kW to 36 kW
• Neon diagnostic indicators
• Gross SAP2009 annual efficiency ranges from 89.5 percent - 91.6 percent
• Market-leading Riello Blue flame burner
• Compliant with September 2018 low nitrogen oxides legislation
• 10 Years guarantee when installed by a G1 accredited installer
• 1 Year standard warranty and 2 years if registered within 30 days
• Extended to 10 years if installed by a registered G1 installer with a Grant or equivalent filter