All stoves and flue systems must be swept minimum once per year if burning wood only, or if burning smokeless fuels, then twice per year. The chimney sweep will usually sweep up through the stove (depending on model and access) and sweep the liner or twin wall flue system. It is imperative you use an accredited chimney sweep and will issue you a sweep certificate. Receipt of payment is not deemed a certificate. Keep the certificates safe as this will be required should you ever need to claim on any warranties. If you require a chimney sweep we recommend The Yorkshire Chimney sweep – 07392 426345.