Vortex Boiler House

Vortex Boiler House

a Heating

5 Year guarantee*

Featuring an externally mounted Riello RDB burner and dual thermostat, Grant Vortex Boiler House models are ideal for garage, cellar and plant room installations.

The Grant Vortex Boiler House uses the same unique heat exchanger and turbulator baffle system used in Grant’s other oil boilers. Compact in size and with a distinctive red casing, these Boiler House models can be flued in the same way as utility models. Efficient and reliable, a Boiler House boiler is ideally suited for those installations when a utility boiler is not the best solution.


Features & benefits

  • *5 year guarantee when installed by a G1 Installer (Terms and Conditions apply)
  • Models include outputs ranging from 15kW up to 70kW
  • Achieves space heating efficiencies of up to 91.7%
  • Encompass Riello’s latest low NOx burner alongside Grant’s patented boiler technology
  • Low running costs
  • Distinctive red powder coated casing
  • Simple and quick to install with no complicated wiring or plumbing
  • Compatible with Grant EZ-Fit flue systems and all the Boiler House models can be flued in the same way as utility models, further enhancing the installation options
  • This range is biofuel compatible (depending on the type of biofuel and % blend)

Awards & Accreditations


Case Studies

An app for heating engineers

An app for heating engineers

Grant boilers are supplied with their supporting Installation Manual and User Instructions but, if these get lost or misplaced, installers can turn to the TechBox app. The TechBox is app is home to all of Grant’s current and historic product manuals and user guides. Heating engineers can simply search, select and download the manual they need while onsite, directly from the app either with or without WiFi connection.

Read more about the Grant TechBox app here.


Product code
Set Output
Max Output
NOx Emissions
Tappings Flow/Return
Energy Rating
Load Profile
Energy Label
Product Fiche
VTXBH15/26 Grant Vortex Boiler House 15-26 21kW 26kW 125kg 891mm 431mm 594mm 91.70 Class 2 1" BSPmm Riello RDB a Heating - View View
VTXBH26/46 Grant Vortex Boiler House 26-46 41kW 46kW 145kg 877mm 455mm 591mm 90.06 Class 2 Return - 1" BSP / Flow - 28mm Riello RDB a Heating - View View
VTXBH46/70 Grant Vortex Boiler House 46-70 64kW 70kW 301kg 1078mm 542mm 765mm 91.66 Class 3 1¼" BSPmm Riello RDB a Heating - View View


EZ-Fit Flue Range

Grant UK supply a comprehensive range of flue systems to suit all Grant Vortex oil-fired boiler ranges

View the Range

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