Market overview: The Air Curtains and Unit heaters Market was valued at $1154.11 billion in 2022 and is estimated to reach $1912.66 billion by 2028, with a CAGR of 10.49% from 2023 to 2028. A fan-powered device called an air curtain creates an imperceptible air barrier over a doorway to effectively divide two spaces. It keeps the atmosphere free of bugs and vermin, dust, airborne...