Range Hood - external blower: Is the design different?
To answer your question, there is no difference between ‘pressure’ and ‘suction’. To point you in the right direction, get that blower outside the house in its own little vibration insulated metal shed. Roof or wall is fine. The main issue is noise. If you ever want to both cook and have a conversation at the same time, heed this advice. I have installed both types and I will never install an in-hood blower again.