House Coal Nuts (approximately 50-100mm in size) This is a very traditional house coal and is one of the most widely used fuels for an open fire. It generates a strong and long flame and will generate an impressive amount of heat whilst burning efficently leaving only a small amount of ash residue. It is important to note that House Coal is NOT suitable for burning in a smoke control area. Sold loose so you will need a coal bunker for us to deliver into. Increasing Discounts on Orders over 10 Bags – Call for our best price!