CPL SUPERTHERM SMOKELESS COAL 20KG The Homefire Supertherm Smokeless Coal - 20Kg is part of the fantastic 'Homefire' range of smokeless coal. Supertherm is a high quality and value for money product which is ideal for use in open fires and glass fronted stoves. Supertherm smokeless fuel is a consistent and easy to light smokeless coal which generates a high heat, banks well overnight and produces up to 80% less smoke than coal. Suitable for use in smoke free zones. This product is only available for collection.