It doesn't have to be art since it's most likely in a closet anyway and it won't take much to keep the filter covering that hole with the help of gravity.If you are planning on relying on that system for an extensive period of time though, I'd probably get it inspected by an HVAC professional.  

Additionally, you could also consider charging a higher security deposit in the case that you have to do any extensive cleaning of the property following their move-out. 

I am absolutely not going to allow an extension and watch for long rentals in the same vein.

Quote from @Theresa McGallicher: I have researched this topic extensively on Bigger Pockets and elsewhere and I am still struggling to understand the tax code. 

-Loan Extension Fees-Early Payment PenaltiesLots of good advice from everyone else above, but wanted to add this as if you can find a lender that minimizes these extra charges that can make a big difference

However, I need someone to be boots on the ground as I travel extensively for my job.Thoughts everyone?

Even if you are filing an extension I have tried to put some things together here that will help you DECREASE your personal tax liability and INCREASE your income for qualifying for a Fannie Mae and Freddie Mac type of loan.This post is designed to help persons who may need a Fannie/Freddie loan on a 1-4 unit property.

Once you have a shortlist, sign up for an account with each one and test them extensively to see how they function.

Most likely the issue is poor surface water management, failing gutters or missing downspout extensions.

There are people here with extensive experience in the area.