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Grant Vortex Wall Hung Condensing Boiler



IITC CODE Model Outputs:
GWHM4055 12-16KW        Module
GWHM5570 16-21KW        Module
GWHU4055 12-16KW        Utility
GWHU5570 16-21KW        Utility


The launch of Grant’s first wall hung oil-fired boiler range comprising two indoor and two outdoor SEDBUK ‘A’ rated models, is an exciting addition to the Vortex family.

Available in outputs ranging from 40,000 – 70,000 Btu/hr in open vented system versions, the new appliances encompass Grant’s patented Vortex stainless steel heat exchanger and turbulator baffle system.

All Indoor wall hung models require a separate flue kit (not supplied with the boiler) and are compatible with all Grant EZ-Fit low level, high level and vertical flue systems, so now almost any installation situation can be catered for.

All Outdoor wall hung modules come complete with a factory fitted flue, high quality external powder coated paint finish, built-in boiler frost protection, mains isolating switch and a test switch.


Ecoflam MAX1 Burner

1 Year guarantee

Whisper quiet in operation

Wall mountable

Multi-directional flue (factory fitted on external models)

Removable control box

Internal condensate trap (with external option)


Condensing Oil Boilers
EZ Fit Flue Guide
Installer Technical Data