Grant Vortex Pro Internal 26kW Oil Combi Boiler

Product Description

The Grant Vortex Pro Internal 26kW Oil Combi Boiler is a powerful, all-in-one heating and hot water solution, ideal for homes without access to mains gas. Designed for internal installation, this floor-standing unit combines central heating and instant hot water production in a single, highly efficient appliance.

Engineered for reliability and ease of use, the Vortex Pro range features a high-performance heat exchanger with increased surface area, delivering excellent hot water output alongside efficient heating. The integrated Riello RDB burner ensures dependable operation, while the high-efficiency pump helps reduce running costs.

With its robust construction and compatibility with biofuel blends, this boiler is a future-ready solution for modern oil-fired heating systems.

Why Customers Should Buy This Product

• All-in-one combi system – heating and hot water from a single unit
• 26kW output suitable for medium-sized homes
• High hot water flow rate (17 l/min) for strong performance
• Floor-standing design ideal for internal installations
• High efficiency (up to 94.5%) reduces fuel consumption
• Large heat exchanger improves hot water delivery
• Riello RDB burner for reliable and consistent operation
• Biofuel compatible for future-ready heating solutions
• Easy installation and servicing for installers
• Upgradeable warranty when installed with approved filter
• Trusted quality from Grant

Key Specifications

• Brand: Grant
• Range: Vortex Pro
• Product Type: Oil Combi Boiler
• Output: 26kW
• Fuel Type: Oil
• ERP Rating: A
• Efficiency: Up to 94.5%
• NOx Class: Class 2
• Mounting Type: Floor Standing

Dimensions:

• Height: 860 mm
• Width: 614 mm
• Depth: 606 mm

Performance:

• Heat Output: 26 kW
• BTU Output: 90,000 BTU
• Hot Water Flow Rate (ΔT 35°C): 17 litres/min
• CH Condensing Max Output: 26 kW
• Noise Level: 51 dB

Features:

• 24 litre expansion vessel included
• Neon diagnostic indicators
• High-efficiency pump
• Heating & hot water selector switches
• Compatible with Grant EZ-Fit flue systems
• Large surface heat exchanger for improved performance
• Riello RDB burner with plug-and-play connection

Warranty:

• Standard: 1 Year (subject to T&Cs)
• Extended: Up to 5 Years (with G1 installer & filter)

Installation & Compatibility

• Suitable for off-grid properties using oil fuel
• Ideal for replacing existing oil combi boilers
• Compatible with Grant EZ-Fit flue systems
• Biofuel compatible depending on blend

What’s in the Box

• 1 x Grant Vortex Pro Internal 26kW Oil Combi Boiler
• Installation Instructions

Important Information

• Oil-fired boiler – requires oil storage tank
• Internal floor-standing installation
• Flue and accessories may be required separately