First, I'm sure we were all using rust as a layman's term for corrosion.
Second, I would still get a second opinion and do a leak check myself.
Third, I would do a search on Evaporator Leaks in this very fine forum.
You will find the following quote: "the pressure switch and the evaporator
are known problems" I'm not an Accord expert but I have a 95 Civic EX with
187K and a 98 Civic EX and both have had AC problems that are now fixed.
The 98's problem turned out to be a bad O ring. Good luck.