3 A Chimney Cowl is an important accessory for getting the most out of your stove! A Chimney Cowl has numerous uses in a modern stove. Cowls prevent rain entry into your chimney, this is the most basic function of the rain cap. Cowls ensure there is no unwanted guests in yout chimney, preventing birds, animals and rodents from getting into the chimney stack. The most useful function of the Cowl is of course its ability to increase draw while preventing a downdraught. Draw is an imporant factor into how effiecient your fuel is burnt in your stove. The installation process has been laid out by our team. We recommended installation is only done by a trained tradesman. Instructions can be found in the tab below. It is recommended that chimneys serving solid fuel appliances be swept and maintained as frequently as necessary but at least once a year. This helps to maintain a healthy burning inside your stove. Ensuring your equipment lasts longer.