Which? 2018 Energy Savings Trust
Vortex Pro: External Combi

5 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 Water

Features & 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. 

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Additionally, there are two very accurate electronic temperature controls which allow the boiler to operate in condensing mode on central heating whilst maintaining its instant hot water production.

  • 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

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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We have a wide range of options available when it comes to flue systems, here's a helpful hand to put the right flue with the right boiler.

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Specification

Product code
Model
Set Output
Max Output
Weight
Height
Width
Depth
Efficiency
NOx Emissions
Tappings Flow/Return
Burner
Energy Rating
Load Profile
Energy Label
Product Fiche
VTXOMCOMBI21 Vortex Pro External Combi 21 21kW 21kW 181kg 945mm 658mm 754mm 90.81 Class 2 22mm Riello RDB a Heating b Water XL View View
VTXOMCOMBI26 VTXOMCOM26 26kW 26kW 206kg 945mm 658mm 754mm 91.71 Class 2 22mm Riello RDB a Heating b Water XL View View
VTXOMCOMBI36 Vortex Pro External Combi 36 36kW 36kW 225kg 945mm 658mm 754mm 94.56 Class 2 28mm Riello RDB a Heating b Water XL View View

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