Hybrid - A hybrid air-con device employs a mix of electric power and fossil fuels. It has a twin utilization, in that it can be used to expel hot air outside the house in the summertime, and inside the winter it will do the alternative to help keep the space https://restaurantandbarventilati69124.blogcudinti.com/29528138/considerations-to-know-about-eco-friendly-commercial-ventilation