At 22 doors, I found it exhausting, but with 16 it seems okay given screening, rent collections, managing repairs, and turn arounds is what I do.

Even cash flowing commercial is only getting 9-10% CoC with NNN, a small retail with Cricket wireless can get higher returns, but its very exhausting dealing with those tenants and types of buildings. 

Any litigator worth his or her salt can turn what happened to you into a lawsuit that can withstand a motion to dismiss.  

My car has full exhaust/headers its pretty loud and tuned over 500hp now.

I’ve exhausted financial resources, so my young son and I recently moved into the unit directly below him after those squatters left.

I would instead leverage a strategy that you can buy and hold to make sure that you are able to withstand a potential dip in the market.

You sound exhausted, discouraged, and mentally defeated.

I am not trying to get in a D-measuring contest here, I am just a bit exhausted of the OH agents spamming on here how OH is the in-all end-all place to be.

I am so exhausted of the pity party on BP.

As to the OP question, if your vent line just connects to a wall mounted exhaust that empties directly outside at that point, then the vent line should have simply been replaced at the time of the equipment change-out.