Firefly Energi 111 m (3 bedroom) 18,484 kWh (GreenDeal EPC) Oil fuelled boiler 2,416l per annum £1,450.00 per annum* FireWIN 12kW Wood pellets 5 tonnes per annum £1,100 per annum £350 per annum £1,996.00 Per Annum 2 Installer: Size of property Average annual usage: Previous fuel: Annual usage: Cost of oil: New boiler: Fuel replacement: Annual usage: Fuel costs: Fuel savings: RHI return: Fir Cottage Orkney, Scottish Isle After a bitingly

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