Good idea. However, the pipes are mainly in in the basement ceiling not in the attic.
But worth a second try, I didn't stop my HVAC last time. I should try again
The motor is ok. While disconnected it's sucks! Replacing pipe is a big job.. the house has been modified since the installation (the house is 60 years old). I'll probably buy a vacuum canister before replacing all the pipes...
yaaa4 OP t1_jdm1kad wrote
Reply to comment by dark-archon in Central Vacuum - Poor suction -> Probably a leak : How to inspect? by yaaa4
You will have to explain me this one...