Abstract: . . .  appliances under the Clean Air Act. System Output Stand-alone stoves produce 6 -12 kW while the output from boilers exceeds 15 kW. Cost and maintenance Stand alone room heaters cost £1,500 - £3,000 installed. Boilers vary according to fuel choice; a typical 20 kW output (average size required for a three bed semi-detached house) wood pellet boiler costs around £5,000 installed, including the cost of the flue and commissioning. A manual log feed system of the same size would be slightly cheaper. Unlike other forms or renewable energy biomass systems require payment for the fuel. Fuel costs vary according to distance from the fuel supplier. Running costs are generally more favourable in an off-gas grid area. The payback period varies according to the fuel being replaced and the type of wood fuel being used but is likely to be around ten years. I N F O R M A T I O N S H E E T 7 This guidance is based on information published by the Energy Saving Trust Ecological cycle For further information contact: Planning Policy Planning Department Wrexham County Borough Council . . .
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