Grant Vortex Pro System Oil Boiler 26/46 - VTXS26/46
The Grant Vortex Pro is one of the UK's most trusted internal oil boilers - award-winning, highly efficient, and built to last. Whether you're a homeowner looking for a reliable heating solution or an installer specifying a boiler for a client, the Vortex Pro System delivers on every level.
With a maximum output of 46kW and space heating efficiencies of up to 94.5%, this floor-standing system boiler is ideal for medium to large properties with a sealed heating system already in place.
Why Choose the Grant Vortex Pro?
- Award-winning design - recognised for performance, reliability, and ease of installation
- Outstanding efficiency - 90.0% to 94.5% space heating efficiency, ERP A-rated
- Whisper-quiet operation - runs at just 51dB, barely noticeable in the home
- 5-year guarantee - when installed by a Grant G1 registered installer (T&Cs apply)
- Solar compatible - works alongside solar thermal systems for added efficiency
- Biofuel compatible - future-ready depending on biofuel type and blend percentage
For Homeowners
If your home runs on oil heating, the Grant Vortex Pro System boiler is a smart, long-term investment. It heats your home efficiently, runs quietly, and is designed to be serviced quickly - meaning less downtime and lower running costs. The A energy rating means you're getting maximum heat for your fuel spend.
This is a system boiler, meaning it works with a sealed central heating system (no cold water tank in the loft). Hot water is stored in a separate cylinder - ideal for homes with multiple bathrooms.
For Installers & Specifiers
The Vortex Pro System 26/46 is engineered for straightforward installation and servicing. Compatible with Grant EZ-Fit flue systems, it supports both horizontal and vertical flue runs. The analogue display and logical layout make commissioning and fault-finding efficient on site.
- Output range across the Vortex Pro Internal series: 15kW to 70kW
- Sealed system models available: 15kW to 46kW
- Features latest Riello burner technology
- NOx Class 2 compliant
- G1 installer registration unlocks the full 5-year guarantee
Technical Specifications
- Model Number: VTXS26/46
- Brand: Grant
- Range: Vortex Pro
- Boiler Type: System / Heat Only Boiler
- Fuel Type: Oil
- Heat Output: 46kW (156,952 BTU/h)
- CH Condensing Max Output: 46kW
- Space Heating Efficiency: 90.0% to 94.5%
- ERP Rating: A
- NOx Class: Class 2
- Mount Type: Floor Standing
- Dimensions (H x W x D): 900mm x 370mm x 602mm
- Noise Level: 51dB
- Display Type: Analogue
- Max Horizontal Flue (100mm): 4m
- Max Vertical Flue (100mm): 8m
- Solar Compatible: Yes
- Biofuel Compatible: Yes (type and blend dependent)
- DHW Output: Not applicable (system boiler)
- Includes: Boiler Only
- Guarantee: 5 years (G1 installer, T&Cs apply)
