Coal fire and stoves: | Twice a year, if in constant use |
Wood fires and wood-burning stoves: | Four times a year if in constant use |
Gas fires: | Once a year |
Oil flues: | Once a year |
(figures as per HETAS) |
Coal fire and stoves: | Twice a year, if in constant use |
Wood fires and wood-burning stoves: | Four times a year if in constant use |
Gas fires: | Once a year |
Oil flues: | Once a year |
(figures as per HETAS) |