Grant Grant Vortex Oil 26-35
The Grant Vortex is one of the UK's leading oil boilers — a fully-condensing unit achieving 97.5% efficiency. Built in Ireland, it's the preferred choice for off-grid properties wanting maximum efficiency from oil heating.
Technical Specifications
Key Features
- 97.5% net efficiency — A+ rated
- Fully condensing design
- 25-year corrosion-resistant stainless steel heat exchanger
- Low NOx burner
- Suitable for all radiator systems
- Internal or external installation options
Best For
Off-grid homes that want maximum efficiency from oil heating.
Supply & installation
Fully installed, inc. flue, filter & VAT — get a personalised quote online.
Get Your QuoteCommon Questions About the Grant Vortex Oil 26-35
Is Grant the best oil boiler brand?
Grant Vortex is consistently rated among the top oil boilers in the UK. Their 25-year heat exchanger warranty is industry-leading.
Can I use kerosene in a Grant Vortex?
Yes — designed for Class C2 kerosene (28-second oil), the standard domestic heating oil in the UK.
Does the Grant Vortex need an OFTEC certificate?
Yes — all oil boiler installations require OFTEC certification.
Other Grant Models We Install
Compare With Other Oil Boilers
Ready to Get the Grant Vortex Oil 26-35 Installed?
We supply and install the Grant Grant Vortex Oil 26-35 across Corby, Kettering, Northampton, and all surrounding areas.