Statute of Limitations for Cleveland plumbing inspection?

[David Bardwell]

I just acquired a house for cash in the city of Cleveland. I've owned it for about 30 days and today I got a hang tag on the door saying the plumbing inspector was here to inspect the water heater. I called the city and was told he is there to do a post-install inspection for the water heater that was installed in 2014!  WTH? 

I don't have any concerns that he'll find any issues with it, but I'd rather not be bothered with it at this point. Anyone know if there's any type of statue of limitations on these, do I need to let him inspect, are these inspectors known for just finding issues to find issues?  

Thanks.