Energy Savings Trust
Vortex Boiler House

5 Year guarantee*

Vortex Boiler House

The Grant boiler House models are ideal for locations that are difficult to access like cellars or plant rooms, where a white cased utility version is not always the best solution.

They come in a distinctive powder coated casing in our iconic Grant red and feature an externally mounted Riello RDB burner and dual thermostat. They have high energy efficiency ratings which not only significantly lower fuel bills but also considerably reduce greenhouse gas emissions and lessen the environmental impact of domestic hot water and heating systems.

a Heating

Features & benefits

  • *5-year guarantee when installed by a G1 accredited installer (T&C’s apply)
  • Outputs ranging from 15–70kW
  • 90.06 – 92.7% Space heating efficiency
  • The Boiler House models encompass the same unique stainless-steel heat exchangers used in other Vortex boilers together with Grant’s exclusive turbulator baffle system which provides ultra-high efficiency and low running costs.
  • Compatible with all Grant EZ-Fit Flue systems the models can be flued in the same way as Utility models, further enhancing installation options.
  • Simple and quick to install with no complicated wiring or plumbing
  • Compact design - ideal for garage and cellar installations
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.


Product code
Set Output
Max Output
NOx Emissions
Tappings Flow/Return
Energy Rating
Load Profile
Energy Label
Product Fiche
VTXBH1521 Grant Vortex Boiler House 15-21 18kW 21kW 125kg 714mm 431mm 597mm 92.70 Class 2 1" BSPmm Riello RDB a Heating - View View
VTXBH2126 Grant Vortex Boiler House 21-26 23.5kW 26kW 125kg 714mm 431mm 597mm 91.70 Class 2 1" BSPmm Riello RDB a Heating - View View
VTXBH2635 Grant Vortex Boiler House 26-35 31kW 35kW 143kg 714mm 431mm 597mm 92.40 Class 2 1" BSPmm Riello RDB a Heating - View View
VTXBH3646 Grant Vortex Boiler House 36-46 41kW 46kW 145kg 703mm 456mm 592mm 90.06 Class 2 28mm Riello RDB a Heating - View View
VTXBH4658 Grant Vortex Boiler House 46-58 52kW 58kW 257kg 1024mm 543mm 768mm 91.98 Class 2 1 1/4" BSPmm Riello RDB a Heating - View View
VTXBH5870 Grant Vortex Boiler House 58-70 64kW 70kW 301kg 1024mm 543mm 768mm 91.66 Class 2 1 1/4"BSPmm Riello RDB a Heating - View View


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