Grant Vortex Indoor Combi Oil Boiler 26kW
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Grant Vortex Indoor Combi Oil Boiler 26kW
(Approx. 3-5 working days)


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The Grant Vortex Indoor Combi 26kW is a floor standing condensing oil fired combination boiler designed to provide both central heating and instantaneous domestic hot water from a single compact unit. It eliminates the need for a separate hot water cylinder, making it suitable for installations where space is limited.
This oil boiler operates in condensing mode for heating while maintaining continuous hot water supply at mains pressure. It features a stainless steel heat exchanger and large plate heat exchangers with low water content to maximise heat transfer efficiency. The boiler includes a Riello RDB burner and is compatible with balanced or conventional flue systems.
The unit is fully approved to OFTEC standards and EC directives, incorporates a 24 litre expansion vessel, and uses high quality nickel plated internal pipework. It is biofuel compatible (subject to blend type) and achieves an ErP ‘A’ rating for energy efficiency.
- 26kW output for heating and hot water
- Stainless steel condensing heat exchanger for high efficiency
- Riello RDB burner with plug and socket connection
- 24 litre expansion vessel included
- Dimensions: 860mm (H) × 590mm (W) × 605mm (D)
| Brand | Grant |
|---|---|
| Width | 590 mm |
| Applicable Standards | OFTEC Approved |
| Depth | 605 mm |
| Flow Rate | 17 l/min |
| Flue Included | No |
| Heating Energy Rating | A |
| Height | 860 mm |
| Central Heating Output | 26 kW |
| Model Name / No | VORTCOMBI26 |
| Weight | 177 kg |
| Water Energy Rating | B |
| Colour | Red |
| Residential Warranty | 1 year manufacturer’s warranty plus 5 year heat exchanger guarantee |
| Sound Power Level (dB A): | 51 dB |
- 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 Indoor Combi 26kW is a floor standing condensing oil fired combination boiler designed to provide both central heating and instantaneous domestic hot water from a single compact unit. It eliminates the need for a separate hot water cylinder, making it suitable for installations where space is limited.
This oil boiler operates in condensing mode for heating while maintaining continuous hot water supply at mains pressure. It features a stainless steel heat exchanger and large plate heat exchangers with low water content to maximise heat transfer efficiency. The boiler includes a Riello RDB burner and is compatible with balanced or conventional flue systems.
The unit is fully approved to OFTEC standards and EC directives, incorporates a 24 litre expansion vessel, and uses high quality nickel plated internal pipework. It is biofuel compatible (subject to blend type) and achieves an ErP ‘A’ rating for energy efficiency.
- 26kW output for heating and hot water
- Stainless steel condensing heat exchanger for high efficiency
- Riello RDB burner with plug and socket connection
- 24 litre expansion vessel included
- Dimensions: 860mm (H) × 590mm (W) × 605mm (D)
| Brand | Grant |
|---|---|
| Width | 590 mm |
| Applicable Standards | OFTEC Approved |
| Depth | 605 mm |
| Flow Rate | 17 l/min |
| Flue Included | No |
| Heating Energy Rating | A |
| Height | 860 mm |
| Central Heating Output | 26 kW |
| Model Name / No | VORTCOMBI26 |
| Weight | 177 kg |
| Water Energy Rating | B |
| Colour | Red |
| Residential Warranty | 1 year manufacturer’s warranty plus 5 year heat exchanger guarantee |
| Sound Power Level (dB A): | 51 dB |
- 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.


