Year guarantee*
Vortex Pro: External Combi
The Grant Vortex Pro range has some of the highest energy efficiency ratings in the UK which not only significantly lowers fuel bills but also considerably reduces greenhouse gas emissions and lessens the environmental impact of domestic hot water and heating systems. They incorporate the latest Riello low NOx burner technology with Grant’s patented heat exchangers to give an award winning range that meets the 2018 low NOx emission targets.
a Heating b WaterFeatures & benefits
The intelligent Vortex Pro Combi incorporates the latest Riello RDB low NOx burner technology and combines it with our award winning Vortex stainless steel heat exchanger.
The Grant Vortex Pro Combi features large heat exchangers which, due to their low water content and larger surface area, vastly increased the hot water performance. With a low system pressure cut off switch, the combi protects itself in the unlikely event of system water loss.
- Compliant with September 2018 low NOx legislation
- Outputs of 21, 26 and 36kW
- 89.5- 91.6% Gross SAP2009 annual efficiency
- Fitted with tried and trusted Riello RDB Lo-NOx burner
- 5 year guarantee when installed by a G1 accredited installer (T&C’s apply)
- 24ltr expansion vessel
- Neon diagnostic indicators
- Factory-fitted multi-directional flue
- Built-in frost protection
Grant is the only oil boiler manufacturer to achieve Which? Best Buys for three years running
Consumer group Which? have published the results of their 2019 oil boiler survey. Amongst the range of products to receive Which? Best Buys this year are all of Grant’s Vortex Pro Utility oil boilers. This is the third year running that Grant boilers have achieved this accolade making them the only oil boiler brand to be awarded Which? Best Buys in 2017, 2018 and 2019.
The Which? Best Buy logo is widely recognised as an endorsement that reflects confidence, trust and reliability in products. The Which? Best Buys and the supporting surveys play an important role in the decision-making process for householders researching new appliances for their home. Grant Engineering is therefore thrilled to have the high-quality build of their Vortex Pro Utility models, for example, acknowledged in the latest Which? survey with Best Buy status.
Read more on our news page.
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Specification
Product code |
Model |
Set Output |
Max Output |
Weight |
Height |
Width |
Depth |
Efficiency |
NOx Emissions |
Energy Rating |
Load Profile |
Energy Label |
Product Fiche |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| VTXOMCOMBI21 | Vortex Pro External Combi 21 | 21kW | 21kW | 181kg | 945mm | 658mm | 754mm | 90.81 | Class 2 | a Heating b Water | XL | View | View |
| VTXOMCOMBI26 | VTXOMCOM26 | 26kW | 26kW | 206kg | 945mm | 658mm | 754mm | 91.71 | Class 2 | a Heating b Water | XL | View | View |
| VTXOMCOMBI36 | Vortex Pro External Combi 36 | 36kW | 36kW | 225kg | 945mm | 658mm | 754mm | 94.56 | Class 2 | a Heating b Water | XL | View | View |
Downloads
Accessories
Grant Vortex Mag One Magnetic Filter
- Filters magnetite and non-ferrous debris
- Simple to install, easy to clean, easy to drain design
- 12000 gauss neodymium magnet
EZ-Fit External Low Level / High Level Flues (Green System) for internal boilers
- Suitable for Grant Vortex boilers up to 70kW
- Starter kits can be extended using extensions and elbows from the low level balanced Yellow System.
- Convert existing Yellow System low level flue to an external high level/vertical arrangement (Plume diverter)
Related products
Vortex Blue: External Combi
- Award winning range
- Outputs of 21, 26 and 36kW
- 89.5- 91.6% Gross SAP2009 annual efficiency