About a year ago I installed new laminate wood floor in the living room of one of my rental units. 2 days ago I got a call from my long term tenant stating that the AC unit (in wall) was leaking and had destroyed the floor because it had expanded.

Did this once, these days we install in typical 150k rehab, Frigidaire, cheapest stainless smooth surface electric range and get 20℅ discounts at Lowe's, nor worth the trouble to negotiate with hh Greg everytime.

I like Loctite Tub and Tile caulk.  

Sump pumps were installed in 2 locations in metal culvert tubes in gravel, with holes for water to drain into. 

If you can "prove" the roof is only 2 layers and you just had the second layer installed, there is no replacement happening.

This will result in warm air being discharged in your wall/ceiling, which could cause problems.Why not install a proper 8" duct end-cap or, better yet, disconnect that branch where it comes off the trunk and cap it at that point.

Hey @Justin C.If you want a fan for just re-circulation, there's a product called Tile fan (http://www.alaska.com.tw/en/product_d.asp) that fits your dimensions.If you want a fan to exhaust air to the outside, you're going to have to find a way to brace the fan to the overhead structure. 

How did you install?

From what I understand there are a couple avenues to repair:New rubber/ metal liner Tearing the box gutters out altogether and extending the eaves to install seamless guttersBypassing the gutters but leaving them in place and attaching seamlessAm I missing something here or is there no economical way to get this done?

As far as drains go, install hair catchers and advise that all plumbing issues that are tenants fault (such as hair, grease etc) are repaired and billed to the tenant.