We aggressively attacked the monthly payments with extra principle and paid off the 86k loan in 3.5 years.

I hate that I have to give her 14 extra days!!! 

If not, that is an extra start up expense. 

If it stays completely a rental and you are in a heavy rental area where parking is at a premium you could charge for the extra parking.

If you go to a general HVAC company, you will pay extra.

She knew she would be working around those 2 trades people.I am at the point that I am more than willing to let the house sit for a week or two extra to be able to hire out the work and do not plan on giving out move in dates in the future unless the property is VACANT! 

You have extra land to expand unless its wetland or hilly.4. 

Additionally, flood insurance is commonly available and ensures that for an extra few hundred bucks a year, you're covered both for damage and loss of use (i.e. missed rents). 

I'm guessing when a lender is involved extra steps are taken to insure that their investment is protected.

If you are concerned about this purchase an extra unit and have it ready to go, don't install it until the old one breathes it's last breath.