Taxes, insurance, pest control, utilities, software, etc comes out to around $13k per year each for my 2 bedroom cabins.Also unplanned capital expenses will add up.  

I have the 2 units already done with separate entrance (utilities are not separate). 

The reality is that the Gross S8 Rent amount on an S8 voucher includes all utilities.

They continue to roll over until they can be fully utilized, either by offsetting future rental income or when certain events occur (e.g., your income drops below the threshold or you sell the property).If you sell the property, the accumulated passive losses are released.

Both of these cost you (from rent) utilities, amenities supplies like paper towels, and furniture deterioration.

We don't utilize any arbitrage method...I am not sure there would be a huge spread like there can be for short-term rentals.   

The amount of tools and resources provided will help launch any business utilizing creative finance. 100% recommend!

My question is, whats the HVAC system to use that provides separate utilities, and separate control per unit. 

SFH are easy to manage, you can have the tenants take care of utilities, lawn care and snow removal.   

Raising the rents, billing back utilities and growing the gross income on the park are all your future opportunities and for you to capitalize on.