Grant
Grant Vortex Pro External Combi Boiler | 26kW or 36kW | 12-17 Working Day Delivery
Grant
Grant Vortex Pro External Combi Boiler | 26kW or 36kW | 12-17 Working Day Delivery
Grant Vortex Pro External Combi Boiler | 26kW or 36kW
Important Delivery Notice: This product has an estimated delivery timescale of 12-17 working days. Please allow for this lead time when placing your order.
The Grant Vortex Pro External Combi Boiler is a high-efficiency external oil-fired combination boiler designed to provide reliable central heating and instantaneous domestic hot water from a weather-resistant outdoor unit.
Available in 26kW and 36kW variants, this external combi boiler is ideal for properties where internal space is limited or where an outdoor boiler installation is preferred. The boiler is housed in a durable external powder-coated casing and is designed to withstand demanding outdoor conditions.
The Grant Vortex Pro External Combi range features a stainless steel heat exchanger, factory-fitted multi-directional flue, built-in frost protection, internal condensate trap, 24 litre expansion vessel and Riello RDB low NOx burner. It is designed for efficient heating performance, reliable hot water delivery and straightforward servicing.
Available Variants
- 26kW Variant: Grant Vortex Pro External Combi 26 - VTXOMCOMBI26
- 36kW Variant: Grant Vortex Pro External Combi 36 - VTXOMCOMBI36
Delivery Lead Time
- Estimated delivery: 12-17 working days
- This product is not a standard next-day delivery item
- Please ensure the delivery timescale is suitable before ordering
- Delivery lead time should be allowed for when booking installation work
Key Features
- External oil-fired combination boiler
- Available in 26kW and 36kW output variants
- Factory-fitted multi-directional flue
- Durable external powder-coated casing
- Designed for outdoor installation where internal space is limited
- Provides central heating and instantaneous domestic hot water
- Stainless steel heat exchanger
- Riello RDB low NOx burner
- Built-in frost stat for external installation protection
- Factory-fitted internal condensate trap
- 24 litre expansion vessel supplied as standard
- Neon diagnostic indicators for user-friendly operation
- Floor-standing external unit
- ErP A-rated space heating performance
- ErP B-rated water heating performance
- HVO / biofuel compatible depending on fuel type and blend percentage
- Up to 10-year guarantee when installed by a G1 Installer, subject to Grant terms and conditions
26kW Variant Specification
- Brand: Grant
- Range: Vortex Pro External Combi
- Model: Vortex Pro External Combi 26
- Manufacturer Part Number: VTXOMCOMBI26
- EAN / GTIN: 5060090371751
- Fuel Type: Oil / Kerosene
- Boiler Type: External Oil-Fired Combination Boiler
- Set Output: 26kW
- Maximum Output: 26kW
- Heat Output BTU: Approx. 90,000 BTU/h
- DHW Output: 26kW
- DHW Flow Rate at 35°C Rise: Approx. 17L/min, subject to mains water conditions
- Efficiency: 91.71%
- NOx Class: Class 2
- Flow / Return Tappings: 22mm
- Burner: Riello RDB
- Energy Rating: A Heating / B Water
- Load Profile: XL
- Dimensions: 945mm H x 658mm W x 754mm D
- Height: 945mm
- Width: 658mm
- Depth: 754mm
- Approx. Weight: 206kg
36kW Variant Specification
- Brand: Grant
- Range: Vortex Pro External Combi
- Model: Vortex Pro External Combi 36
- Manufacturer Part Number: VTXOMCOMBI36
- EAN / GTIN: 5060090371768
- Fuel Type: Oil / Kerosene
- Boiler Type: External Oil-Fired Combination Boiler
- Set Output: 36kW
- Maximum Output: 36kW
- Heat Output BTU: Approx. 123,000 BTU/h
- DHW Output: 36kW
- Efficiency: 94.56%
- NOx Class: Class 2
- Flow / Return Tappings: 28mm
- Burner: Riello RDB
- Energy Rating: A Heating / B Water
- Load Profile: XL
- Dimensions: 945mm H x 658mm W x 754mm D
- Height: 945mm
- Width: 658mm
- Depth: 754mm
- Approx. Weight: 225kg
Ideal For
- Homes where internal boiler space is limited
- Outdoor boiler installations
- Replacement oil combi boiler installations
- Properties requiring heating and domestic hot water from one unit
- Domestic properties using kerosene / oil heating
- Installations requiring a factory-fitted external flue arrangement
- Applications where a durable weather-resistant external casing is required
Installation Benefits
- External floor-standing design helps save indoor space
- Factory-fitted flue simplifies installation planning
- Internal frost protection supports outdoor installation
- Integrated condensate trap reduces external condensate components
- Neon diagnostic indicators support servicing and fault diagnosis
- Riello burner technology offers dependable oil burner performance
- Stainless steel heat exchanger supports long-term efficiency
Important Delivery Notice
Please note: This product has an estimated delivery timescale of 12-17 working days. This should be clearly considered before ordering and before booking installation work.
Important Product Note
This listing is for the Grant Vortex Pro External Combi Boiler with selectable 26kW or 36kW output variant. Controls, oil line components, fire valves, filters, pipework, fittings, commissioning materials and installation accessories are not included unless stated separately.
The correct output variant must be selected before checkout. Suitability depends on the property heat requirement, domestic hot water demand, oil supply arrangement, flue position, condensate route and installation requirements.
Professional Installation Required
This oil-fired boiler must be installed, commissioned and serviced by a suitably qualified oil heating engineer. Installation should be carried out by a competent professional, such as an OFTEC registered technician, in accordance with current regulations, Grant installation instructions and safe working practices.
Delivery Times
All our deliveries are made by some of the countries most trusted couriers, including Royal Mail, PacelForce, DHL , Fastway Curriers. For most larger sized deliveries, you will receive a call from the courier an hour before the scheduled delivery time.
Free Delivery
Free delivery when you spend £150+ on all our stocked items, up to the maximum 20kg in weight (UK & Ireland Only) To be eligible for this service, you must place your order before 1pm on the previous day.
Delivery Drop Off
It is important to note that we use external shipping couriers. They are responsible for delivering the item(s) to the kerb-side. They are not responsible for delivering items into your home*.
*Please note, for large orders we advise that you seek assistance from friends or neighbours to assist with moving your order, as often the driver will not be able to assist you. Some items may be delivered on a pallet. It is your responsibility to dispose of the pallet, however, we recommend keeping it for the first 14 days in case you need to return your item(s).
Failed Deliveries
In the unlikely event that delivery is attempted when you are not at home, we will contact you by phone and re-book another time that suits you. Please note, there may be a re-delivery charge added at our discretion, which will be reviewed on a case by case basis.
Direct Deliveries from Distribution Centers
To help you receive your items as quickly as possible, parts of your order may be dispatched directly from a distribution center (Ie) Amazon. If this is the case, you will be contacted directly by them to arrange delivery for the products concerned. Please note, these items will arrive at a different time to products dispatched from our head warehouse. Some distribution centers may take between 2-3 days to deliver items.
Non-Stocked Items
Some items are ordered into our warehouse especially for your orders. This means there may be additional lead times on your order arriving. The estimated delivery time for non-stocked items is 5-7 working days.
For orders that contain a mixture of stock and non-stock items, excluding items delivered directly from distribution centers, we will deliver all items together. We will make you aware of this when we phone or email you to confirm the delivery date. You will be given the option to receive them separately as well, however there may be additional shipping charges.
Shipping Rates
All Orders to the UK & Ireland *ONLY*up to 20kg £150+ is Free
Pallet Rates are priced on application and order... delivery lead times will also vary based on post code.
Returns
Returns are subject too a 50% re-stocking charge.
- Items installed/fitted without professional understanding IE Oftec/SafeGas Registered Installer certificates, invalidate any warranty of said item bought.. This is however is at the companies discretion.
- All products must be inspected within 24hrs. Goods are non-returnable after this period.
To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.
Several types of goods are exempt from being returned. Goods including but not limited to printed circuit boards, control boxes, chemicals, hazardous materials, flammable liquids or gases. Please ask if you are unsure if you can return your goods.
Some items are not returnable such as PCB Boards and Boilers if they are opened, There also will be a 25% Handling fee for All Items if accepted for return.
To complete your return, we require a receipt or proof of purchase.
Please do not send your purchase back to the manufacturer unless otherwise instructed by Spares Direct.
There are certain situations where only partial refunds are granted (if applicable):
- Any item not in its original condition, is damaged or missing parts for reasons not due to manufacturer / supplier error.
- Any item that is returned more than 30 days after delivery
Refunds (if applicable)
Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund. If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.
Late or missing refunds (if applicable)
If you haven’t received a refund yet, first check your bank account again. Then contact your credit card company, it may take some time before your refund is officially posted. Next contact your bank. There is often some processing time before a refund is posted. If you’ve done all of this and you still have not received your refund, please contact us at info@sparesdirect.ie
Sale items (if applicable)
Only regular priced items may be refunded, unfortunately sale items cannot be refunded.
Exchanges (if applicable)
We only replace items if they are defective or damaged. If you need to exchange it for the same item, send us an email at info@sparesdirect.ie and send your item to: Unit 5 Dargan Industrial Park, 62 Dargan Crescent, Belfast BT3 9JP.
Unwanted goods or Failed deliveries of items bought
If for any reason you order from us and the item has been shipped, but you no longer wish to have the item, the goods should be returned to us at the consumers cost. The price of goods will be refunded upon delivery/inspection (please note carriage cost will NOT be refunded. This also applies to missed deliveries/collection of goods from currier depot.
Shipping
To return your product, you should mail your product to: Unit 5 Dargan Industrial Park, 62 Dargan Crescent, Belfast BT3 9JP.
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund.
Depending on where you live, the time it may take for your exchanged product to reach you, may vary.
If you are shipping an item over £50, you should consider using a trackable shipping service or purchasing shipping insurance. We don’t guarantee that we will receive your returned item.

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