Not a comment on the ventilator made from a wiper motor, but I have had one fail, and had to have it replaced for something like $255. All mechanical parts wil

Not a comment on the ventilator made from a wiper motor, but I have had one fail, and had to have it replaced for something like $255. All mechanical parts will fail (the antikythera device isn't still operational, but that's a pretty long-lived device!), it's just a matter of when and why.