She has owned the Industrial warehouse in which her business operates for the past ten years and her property has appreciated significantly over that time due to the rising appeal of Industrial real estate as an investment.

In my business we pay around 2700 a month for warehouse storage for our excess inventory.

I can see the following as options:Get rid of the steam boiler and install high-velocity AC/heating (seems like the best, but PRICIEST, option)Limit steam heating to a single unit and install electric baseboard heating on the other two units (perhaps the most cost-effective way to go, though I would still have to install separate AC window units)Limit steam heating to a single unit and install ductless mini-split AC/heaters on the other two unitsRepair/replace the steam boiler with another steam boiler, fix any radiators that have issues, and keep the status quo without zoning heat (not ideal - I can already imagine the third floor being one extreme temperature while the first floor is another)I'm really new to all of this and at a complete loss right now for how to proceed.

Water got in from the gutters and rain hitting the siding face, where it couldn't escape.combined with condensation formed on the inside wall cavity from temperature differences between an air conditioned room at 75 degrees and an outside wall over a 100.  

I'm looking into a 10,000 sq ft industrial warehouse build

I would say that longevity is important and temperature homogeneity.

Situation: - Killer opportunity to sell one of our warehouses in Portland, OR. - No debt on property. - Tenant is wood worker. 

Professional steam cleaners get to a higher temperature and sanitize the carpet.

that's it.This is waaay cheaper, faster, safer and more effective than your ozonators, bleach, etc  etc (unless you have to coat a warehouse).

At the apartments, we replaced thermocouples, temperature valves, burners, pretty much anything we could to keep them running until they burst.