A couple ideas are on my mind currently #1 take out a line of credit on the house i am in now, or use cash on hand, to go buy another sfh to live in and either rent this current houses and or air bnb it??

That includes: Whirlpool, Maytag, KitchenAid, Jenn-Air, Amana, and Hotpoint.

Otherwise I'll just spend my time on Houzz and Pinterest.There are plenty of blog posts out there that give the behind-the-scenes details of how the renovation shows do and don't work (no, they will not work on spaces that won't be on air; yes, they will make a mess of your property in some fashion), so I'm not totally jaded by what I see on tv. 

Be carefull  adding central air to a duct system that was designed for heat only , it may not cool properly .

The staining could be becasue these heaters draw air in from the bottom and push it out the top. so any dirty air  is pulled through the heater and pushed out the top causing stains on walls. 

Hello to all that took that time to read this post, I’m a 22 year old husband to a wonderful wife and father of a beautiful baby girl and Im joining the United States Air Force to work on airplanes, but I’ve wanted to do real estate since I was in my early teens.

So selling an annual rental and purchasing vacation rental or air bnb or factory would all be fine. 

We are thinking of listing it with Air BnB but we live an hour and a half north of there.

you already live in a state were investors buy.. not sure why U would wonder about.SC in Charleston particular is very robust.. however do check prop tax's  the play there is LEGAL air bnband student housing..

There are probably State laws that apply as well as local ordinances in some cities.Although I'm not 100% sure, I THINK a landlord is required to keep the rental "habitable" which I think includes things like hot water and a heating system but not things like lawn care or air conditioning.