You’d just have to decide whether to create a “closet” for the air handlers, or put them in the attic.Here that could be done for 2 units for $10k or less, with some shopping.

I was paying $3k for 2.5 ton units (rheem) to replace condensor and air handler, with electric heat.

@John ThomasIf you want to develop your rental property and reach financial freedom with real estate investments then begin early following these basic steps: research, network with professionals, look for a local market, put together a team of experts in this field, assess your financial situation, specify the criteria for investments, adopt baby steps, get to know all the details about the area where you want to invest money, then invest them or take part in any riveting event after thoroughly examining it.Put together a group of pros—people like farm operators, land agents, building firms' representatives, lawyers who handle real estate law issues or litigators dealing with real estate disputes, loan officers.

@Gary M caceres, @Jake Handler could definitely help you out with this!

Because of this, the regulations around ESAs become tricky....ESA are required to behave well in public, listen to their handlers, and not cause a disturbance.... 

As somebody new to REI, what is the best way to handle rent lost when buying a fixer upper during the work?  

Also, I could point to the active/directly owned investments that have failed in this mini-downturn and claim that "all" directly owned investments are too risky (and that direct investors are too dumb to handle real-estate etc).  

Tenants and their handlers are entirely area specific.

The way we handle rent increases with current tenants (if you decide you want the tenants to stay) is to offer them a few different options at varying levels of rent increase or discount.

So, let a teacher teach, let the police officer police, let the doctor mend, and most importantly to this subject, let the Realtor handle real estate!