Complete technical details and performance specifications for the Grandee GCW 23/28 Ext
A J Wells and Sons
A O Smith
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The Grandee GCW 23/28 Ext delivers exceptional performance with a 89.8% efficiency rating, making it one of the most energy-efficient heating solutions available.
This Conventional boiler provides 23 - 26 (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 Grandee GCW 23/28 Ext is the perfect heating solution for your home
89.8% efficiency rating delivers maximum energy savings and optimal performance
Save £150-£300 annually on energy bills compared to older, less efficient boilers
Trusted Grandee 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 Grandee GCW 23/28 Ext to help you make informed decisions
Calculate specific savings with the Grandee GCW 23/28 Ext, including CO₂ reduction and payback period analysis.
Compare the Grandee GCW 23/28 Ext against other boiler models with detailed specifications and performance metrics.
Check if you qualify for a free Grandee GCW 23/28 Ext replacement through the government ECO4 scheme.
The Grandee GCW 23/28 Ext with its 89.8% 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 ✓ Grandee Authorized ✓ 89.8% Efficiency Rated ✓ Professional Installation
