I have an air-exchanger, and the hoses are little loose. That is I can feel the air flowing out between the motor and the hose.
Here is a picture of the overall thing:
Here is closer picture that shows where the air escapes from exactly:
How do I make it more air tight?
I see that there is some sort of sticky aluminium foil or something that they used before:
Maybe that's what I need to use again? If yes, what's it called?