Grant Vortex Pro 21 21kW External Floor Standing Combination Boiler Oil ErP - VTXOMCOMBI21

£3440.16 (Inc. VAT)

Extended Lead Time, 2 Weeks+




Grant Vortex Pro 21 External Floor Standing Combination Boiler Oil ErP

ErP Oil Combi Boiler

The latest Grant Vortex Pro External condensing combi models feature internal frost protection, 24ltr expansion vessel, neon diagnostic indicators and a factory fitted internal condensate trap (this can be sited externally if preferred), all designed to make installation and servicing easier.

They also feature a multi-directional factory fitted low level flue, external powder coated robust casing, built-in frost protection, a mains isolating switch and a test switch.

The boilers come in three sizes, 21kW, 26kW and 36kW.

Grant Vortex Pro Combi boilers have larger plate heat exchangers which due to their low water content and great surface area, vastly increase hot water performance. Mixing valves on the unit are pre-set at 50°C, which accurately control the hot water draw off temperature from the boiler. They also include a low system pressure cut off switch, enabling the combi to protect itself in the event of system water loss. Additionally, there are two very intelligent electronic temperature controls which allow the boiler to operate in condensing mode on central heating, whilst keeping the instant production of hot water.


  • Award winning condensing heat exchanger
  • Quiet in operation
  • Available in three models – 21kW, 26kW* and 36kW.
  • High quality external powder coated case
  • Simple and quick to install with no complicated wiring or plumbing
  • Internal condensate trap
  • Electronic Boiler Thermostat
  • Neon diagnostic indicators
  • 24ltr expansion vessel on all models
  • Low NOx Riello burner with plug & socket connection to control panel
  • Efficiency: 89.5 – 91.6% GROSS (SAP2009)

15 litres per minute at an average temperature of 50°C
Recovery time 4 minutes approx.Based upon 100 litre draw off.

*Hot water flow rate is dependant on mains pressure available.

Choosing the most suitable type of Boiler is a key decision. After you determine that Oil Combi Boilers give the appropriate answer then the Grant VTXOMCOMBI21 is no doubt worth a serious look.



Grant Vortex Pro 21 21kW External Floor Standing Combination Boiler Oil ErP - VTXOMCOMBI21 Specifications
Output (BTUs) 71652
Fitting Location External
Weight (Kg) 181
EAN 5060090372130
Boiler/Product Type Combi Boiler
Sub Type Oil Combi
Guarantee (Years) 2
Width (mm) 658
Height/Length (mm) 945
Depth (mm) 754
Heat Output (kW) 21
Flow Rate (L/min) 15
Fuel Type Oil
Mounting Floor

Grant Vortex Pro 21 21kW External Floor Standing Combination Boiler Oil ErP - VTXOMCOMBI21

Product Code: PN106636

£3,440.16 (Inc. VAT)

Stock status: Extended Lead Time, 2 Weeks+
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30 Day Returns

Returns Policy - Changed Your Mind?

If you change your mind about the product when you receive it you can notify us any time within 30 days and return it for a full refund at your own cost. Any refunds will be made within 30 days of receiving your returned item. You are expected to cover the cost to return the item and your initial delivery charge will not be refunded.

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