Calculate exactly how much you'll save with an A-rated boiler upgrade. Get instant results showing annual savings, CO2 reduction, ECO4 eligibility, and detailed breakdown.
Calculate your potential savings with an A-rated boiler upgrade
Our calculator considers your property type, age, and size to provide accurate estimates
Instantly check if you qualify for free boiler upgrade through the ECO4 scheme
Get comprehensive breakdown of savings with visualizations and recommendations
Our calculator uses official UK energy consumption data from Ofgem, current energy prices (7.42p/kWh for gas), and industry-standard boiler efficiency ratings. Results are typically accurate within 10-15% of actual savings. The calculator accounts for property type, age, occupancy, and heating patterns to provide personalized estimates.
An A-rated condensing boiler has 90%+ efficiency, converting 90p of every £1 spent on gas into heat. Old non-condensing boilers are only 55-60% efficient. Typical savings range from £500-£1,200 annually, with 10-year savings often exceeding £8,000. Our calculator provides exact estimates for your property.
Yes! If your property has an EPC rating of D, E, F, or G, you may qualify for a completely free boiler through ECO4. You'll also need to be a homeowner (or have landlord permission) and meet certain criteria. Our calculator instantly checks your eligibility and provides next steps.
The calculator uses Ofgem's typical domestic consumption values adjusted for your property type, age, number of bedrooms, and occupancy. It factors in your thermostat settings, heating hours, and existing insulation. You can also enter your actual kWh usage from bills for maximum accuracy.
Yes, upgrading from an old inefficient boiler to an A-rated system typically improves your EPC rating by 1-2 bands. For example, a property might go from EPC F to EPC D. This increases your property value and makes it more attractive to buyers while reducing your carbon footprint by several tonnes per year.
You'll need: your property type and age, number of bedrooms, current boiler type and age, fuel type (gas/oil/electric), approximate annual energy spend, number of occupants, and thermostat settings. Optional: current EPC rating and actual kWh usage from recent energy bills.
If you qualify for ECO4, your new boiler could be completely free!