Anyone have a recommendation on a company for a hot water heat boiler system replacement? 

To understand what I am talking about, let's say your property has a pool, and a prospective tenant searches for properties with pools.

If there is mold, it will usually be A) on the subfloor exterior, joists, and insulation in the crawlspace, or B) in any areas of water damage/water leaks inside the walls, behind tile in bathrooms, etc.

You could try syndication, where you pool money from multiple investors.

Two rentals I have, the water has to be in the owner's name.

Of course, if it concerns water, that is an emergency.

We did notice some water damage in the front of the house but was told the roof is in good condition.

How do I handle the water being in my name as well?

Some of those variables are the size of the park, number of vacant spaces, the number and type of park amenities, the age of the park, underground infrastructure age and condition, park location, size of the market, city water or well, city sewer or septic, other utility sources and whether or not they are direct billed, deferred maintenance, cost of management, and more.

If one system malfunctions, you'll be out of the water.