What is the real value of a commercial kitchen ventilation?

Most know Oscar Wilde´s quote “Nowadays people know the price of everything and the value of nothing.” That quote fits also quite well to the situation in the commercial kitchen ventilation. So question: „What’s the real value of a commercial kitchen ventilation?“ To give an idea about that question and topic please check our new explainer video:  https://youtu.be/APk5VOh4PYA