To their credit, I've used these kind of machines in a dusty environment and had to stop work to clean the radiator out. I definitely think it's a cool idea to

To their credit, I've used these kind of machines in a dusty environment and had to stop work to clean the radiator out. I definitely think it's a cool idea to reverse the fan to clear some debris out. To your point, I think charging money for the ability to reverse the fan is criminal, considering everything is already built in. I'm really curious how much they charge to unlock that feature once the machine is already purchased.