Grant Vortex Boiler House Condensing Oil Boiler 36–46kW
calcPageSize())"
/>
Grant Vortex Boiler House Condensing Oil Boiler 36–46kW
(Approx. 3-5 working days)


Do you have a MacBlair trade account?
The Grant Vortex Boiler House 36–46kW is a floor standing oil fired condensing boiler designed for installation in boiler houses, garages, or plant rooms. It features an externally mounted Riello RDB burner and a stainless steel heat exchanger that delivers high efficiency and low NOx emissions.
This model provides a heat output range of 36kW to 46kW, making it suitable for medium sized heating systems. It operates exclusively on Class C2 kerosene to BS 2869:1998 and is compatible with all Grant EZ Fit flue systems, allowing flexible installation options.
The boiler incorporates Grant’s patented turbulator baffle system to maximise heat transfer and achieve seasonal efficiencies of up to 91.7%. It is biofuel compatible (subject to blend type) and includes a distinctive red powder coated casing for durability.
- Heat output range: 36–46kW for large heating systems
- Stainless steel condensing heat exchanger for high efficiency
- Riello RDB burner with low NOx emissions
- Compatible with Grant EZ Fit flue systems
- Factory-fitted internal condensate trap for safe disposal
| Brand | Grant |
|---|---|
| Width | 540 mm |
| Connection Size | 28 mm |
| Depth | 670 mm |
| Flue Included | No |
| Fuel Type | Class C2 Kerosene (B30K compatible) |
| Heat Output Range | 36–46kW |
| Height | 705 mm |
| Heating Output | 46 kW |
| Min Heat Output | 36 |
| Model Name / No | VORTBH120155BSRED |
| Weight | 125 kg |
| Colour | Red |
| Mount Type | Free Standing |
| Hydrogen Ready | No |
| NOx Class | Class 2 |
| Residential Warranty | Up to 5 years when installed and registered by a G1 Installer |
| Sound Power Level (dB A): | 63 dB |
| Burner Type | Riello RDB 2.2 |
| Condensate Trap | Integrated |
| Flue System | Grant EZ Fit |
| Seasonal Efficiency | 92.6% |
- Delivery cost will be calculated at checkout once delivery address has been confirmed
- Delivery lead times are an estimate only
- Delivery drivers will always prioritise safety over convenience when offloading materials
- Bagged products such as cement and plaster cannot be returned once opened
- Jumbo bags cannot be returned once delivered
- All other goods may be returned within 3 months with a proof of purchase provided
- Chargeable pallets may be returned for a full refund
- All online pricing is specific to Northern Ireland only. Pricing for our Isle of Man branch may vary.
The Grant Vortex Boiler House 36–46kW is a floor standing oil fired condensing boiler designed for installation in boiler houses, garages, or plant rooms. It features an externally mounted Riello RDB burner and a stainless steel heat exchanger that delivers high efficiency and low NOx emissions.
This model provides a heat output range of 36kW to 46kW, making it suitable for medium sized heating systems. It operates exclusively on Class C2 kerosene to BS 2869:1998 and is compatible with all Grant EZ Fit flue systems, allowing flexible installation options.
The boiler incorporates Grant’s patented turbulator baffle system to maximise heat transfer and achieve seasonal efficiencies of up to 91.7%. It is biofuel compatible (subject to blend type) and includes a distinctive red powder coated casing for durability.
- Heat output range: 36–46kW for large heating systems
- Stainless steel condensing heat exchanger for high efficiency
- Riello RDB burner with low NOx emissions
- Compatible with Grant EZ Fit flue systems
- Factory-fitted internal condensate trap for safe disposal
| Brand | Grant |
|---|---|
| Width | 540 mm |
| Connection Size | 28 mm |
| Depth | 670 mm |
| Flue Included | No |
| Fuel Type | Class C2 Kerosene (B30K compatible) |
| Heat Output Range | 36–46kW |
| Height | 705 mm |
| Heating Output | 46 kW |
| Min Heat Output | 36 |
| Model Name / No | VORTBH120155BSRED |
| Weight | 125 kg |
| Colour | Red |
| Mount Type | Free Standing |
| Hydrogen Ready | No |
| NOx Class | Class 2 |
| Residential Warranty | Up to 5 years when installed and registered by a G1 Installer |
| Sound Power Level (dB A): | 63 dB |
| Burner Type | Riello RDB 2.2 |
| Condensate Trap | Integrated |
| Flue System | Grant EZ Fit |
| Seasonal Efficiency | 92.6% |
- Delivery cost will be calculated at checkout once delivery address has been confirmed
- Delivery lead times are an estimate only
- Delivery drivers will always prioritise safety over convenience when offloading materials
- Bagged products such as cement and plaster cannot be returned once opened
- Jumbo bags cannot be returned once delivered
- All other goods may be returned within 3 months with a proof of purchase provided
- Chargeable pallets may be returned for a full refund
- All online pricing is specific to Northern Ireland only. Pricing for our Isle of Man branch may vary.


