It could be that one day ducts clean themselves via a fully automated built in system but we are not yet at that point yet, it seems some way off and could start off massively expensive. A large restaurant chain could find it more cost effective to have auto cleaning built into their ductwork if technology makes this possible at some point in the future.
For now manual cleans are the only real option. It is better to invest in a full set of duct cleaning machines for your teams to use, this saves both time and increases cleaning efficiency. If you need ductwork cleaning machines but don't require everything then you can invest in our Foam Box to make chemical application easier and making removing grease easy.
We don't know if a new HVAC cleaning solution is around the corner but customers are always looking to cut costs so it could be a strong possibility...