Vortex Boiler House

5 Year guarantee*

Vortex Boiler House

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.

a Heating

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 90.06% - 92.7%
  • 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
  • As with all of Grant’s Vortex oil boilers, this range is biofuel compatible (depending on the type of biofuel and % blend)
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
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


EZ-Fit Flue Range

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

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