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.
Common 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. All our oil installations are OFTEC registered.
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. Fixed price, Gas Safe certified.