Complete technical details and performance specifications for the Grant Vortex Outdoor Combi 21
A J Wells and Sons
A O Smith
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The Grant Vortex Outdoor Combi 21 delivers exceptional performance with a 89.5% efficiency rating, making it one of the most energy-efficient heating solutions available.
This Combi boiler provides 21 - 21 (KW) of reliable heating power using Oil fuel for optimal performance.
Potential annual savings of £150-£300 compared to older, less efficient boilers, while reducing your carbon footprint.
Discover why the Grant Vortex Outdoor Combi 21 is the perfect heating solution for your home
89.5% efficiency rating delivers maximum energy savings and optimal performance
Save £150-£300 annually on energy bills compared to older, less efficient boilers
Trusted Grant engineering with comprehensive warranty coverage
Built to last with modern condensing technology and premium components
Discover other high-efficiency boilers that might be perfect for your home
Advanced tools designed specifically for the Grant Vortex Outdoor Combi 21 to help you make informed decisions
Calculate specific savings with the Grant Vortex Outdoor Combi 21, including CO₂ reduction and payback period analysis.
Compare the Grant Vortex Outdoor Combi 21 against other boiler models with detailed specifications and performance metrics.
Check if you qualify for a free Grant Vortex Outdoor Combi 21 replacement through the government ECO4 scheme.
The Grant Vortex Outdoor Combi 21 with its 89.5% efficiency rating is available at no cost through the government ECO4 scheme. Professional installation included with potential savings of £150-£300 annually.
✓ Government Approved ECO4 ✓ Grant Authorized ✓ 89.5% Efficiency Rated ✓ Professional Installation
