I run an air BnB out of my home in Southern Vt And I own 2 condos at Mt Snow. 

Air BNB allowed.

In our property, the house was open to the air in the damp environment of coastal Florida, no heat or A/C at the house.  

& different parts of the asset can be depreciated on different schedules.To find out the useful lifespan of each component, you do a cost segregation study to analyze all of the parts.The raw land can't be depreciated so you start by giving that a value first.But other items can be depreciated on a quicker timeline.A roof, road, sidewalk, fencing, walls, gates, doors, latches, flooring, air conditioners, pavers, curbing, landscaping, etc.The IRS has a depreciation schedule for each type.Some parts are 5 yrs.

We still get these blasts of arctic air when the yet stream is looping south and it gets really cold, but that's a week or two of really cold temps and not a sustained winter.

In which case you are likely better off going to forced air.

You can find Dean Harris's videos on you tube. 

Of course, that sort of price tag that he pulled out of the air is not logical and just shows me that I cannot be trusting with people without a firm price on all projects. 

NH, Maine, Vermont seem like interesting AIR BNB spots.

I am currently using Air bnb, Homeaway and recently used Craigslist in NYC. all the best, James