A/C system will only last another 2-3 years

[Allison W Gammon]

Hi, I am in the process of purchasing a 3 family.  The house is 130 years old, so I understand that there will be inevitable issues.  The central AC wasn't working, so the sellers offered a $5000 credit for me to repair/replace it.  My real estate agent had someone look at it to make sure it wouldn't cost more than that.  The mechanic ended up replacing something in the unit so that it would work again ($400 fix that the sellers paid for), though the mechanic told me that the system will nickel and dime me until I finally replace it and it will only last about 2-3 more years.  The seller's rescinded their $5000 credit because it works now.  Should I fight to get the credit or let it go?  (I have spoken to my agent.  I'm looking for other opinions).  Thanks!