1 HVAC for 3 units? Walk away from the deal??

[Gladys Cepeda]

Hey!! Im in need of serious insight please. I am in contract with a 3 family multi unit property. Its a 2 (1 bedroom) on first floor, and the 2nd and 3rd floor is a townhouse style of 4 -5 bedroom! There is only one HVAC for these 3 units and 3 seperate themostats. Will I be able to get away with not adding 2 additional HVACs? I keep reading that it will be so hard to seperate the costs for each unit. Is this worth the headache or pass on this. Not to mention the inspection came back with SO many issues.