@Maira  Hi there, it sounds like there’s a partially blocked airway somewhere in your machine. Some places may not be obvious - so start by following along with this video:

If needed, contact your local support for more help after that.

Hi @Maira, 

I believe you’re refereeing to the suction power, including the amount of debris collected via the cleaner head. 

Dyson technology is versatile, but require maintained over time. This maintenance ensures optimal proficiency. 

I suggest reading following the instructions on this post ‘Cordless vacuum maintenance checks’. 

David.