Grant Vortex Pro External 36kW Oil Combi Boiler with Flue

Product Description

The Grant Vortex Pro External 36kW Oil Combi Boiler is a powerful, space-saving solution designed for properties where internal installation is not practical. Built for outdoor use, this high-performance unit delivers both central heating and instant hot water from a single appliance.

Featuring a durable powder-coated external casing and factory-fitted multi-directional flue, this boiler is engineered to withstand the elements while maintaining excellent efficiency and reliability. Its high-capacity heat exchanger ensures strong hot water performance, while the integrated Riello low NOx burner provides consistent and efficient operation.

Supplied with a 24-litre expansion vessel and designed for ease of installation and servicing, the Vortex Pro External range is a trusted choice for off-grid homes requiring dependable oil-fired heating.

Why Customers Should Buy This Product

• External installation frees up valuable indoor space
• High 36kW output ideal for larger homes and high demand
• Strong hot water flow rate (20 l/min) for powerful performance
• Durable weatherproof casing for long-lasting outdoor use
• Factory-fitted multi-directional flue for flexible installation
• Riello low NOx burner for efficient and reliable operation
• High efficiency (approx. 89.5%) reduces fuel consumption
• Quiet operation for minimal disturbance
• Includes expansion vessel for added convenience
• Upgradeable warranty up to 5 years with approved installation
• Trusted quality from Grant

What’s Included

• 1 x Grant Vortex Pro External 36kW Oil Combi Boiler
• 1 x Factory-Fitted Multi-Directional Flue

Key Specifications

• Brand: Grant
• Range: Vortex Pro
• Product Type: Oil Combi Boiler (External)
• Output: 36kW
• Fuel Type: Oil
• ERP Rating: A
• Efficiency: Approx. 89.5%
• NOx Class: Class 2
• Mounting Type: Floor Standing (External)

Dimensions:

• Height: 945 mm
• Width: 658 mm
• Depth: 754 mm

Performance:

• Heat Output: 36 kW
• BTU Output: 123,000 BTU
• Hot Water Flow Rate (ΔT 35°C): 20 litres/min
• CH Condensing Max Output: 36 kW
• Noise Level: 54 dB

Features:

• 24 litre expansion vessel included
• Riello low NOx burner
• Electronic boiler thermostat
• External powder-coated casing
• Internal condensate trap (can be sited externally)
• Compatible with Grant EZ-Fit flue systems

Flue:

• Factory fitted, multi-directional flue
• Max Vertical Flue Length: 12 m

Warranty:

• Standard: 1 Year
• Extended:
  • 2 Years (if registered within 30 days)
  • Up to 5 Years (with G1 installer & filter)

Installation & Compatibility

• Suitable for off-grid properties using oil fuel
• External floor-standing installation
• Ideal for homes with limited internal space
• Compatible with Grant flue systems and accessories

What’s in the Box

• External Oil Combi Boiler Unit
• Factory-Fitted Flue
• Installation Instructions

Important Information

• Oil-fired boiler – requires oil storage tank
• Designed for outdoor installation
• Ensure correct siting and compliance with building regulations