Our electric heaters and greenhouse fans double up for winter heating and summer cooling, as well as improving ventilation and air circulation. By installing them, you can maintain the temperature of your greenhouse or polytunnel without spending a fortune on energy bills. During the winter months, our greenhouse exhaust fans with heaters are an effective way to minimise the cold temperatures, and will also get rid of condensation. Similarly, in the warmer summer months you can rely upon our greenhouse ventilation fans to keep the air cool and circulating effectively. Air movement is vital in order to keep your plants healthy, as removing stagnant air reduces the risk of diseases such as mildew, weak plant stems and damping-off, and once air is flowing these fans can ensure that the climate is consistently level.