We added a split unit A/C with heating to the enclosed Florida room to add over 300sq/ft in living area.

The tenant is now demanding i get involved in various state and federal low income programs such as winterization and low income heating assistance programs.

I know it is "heat resistant" (formica) but it is not heat proof.

This is the simplest method, but it also means your tenants are more likely to abuse the utilities by leaving windows open with the heat or A/C running, leaving lights on, ignoring the toilet that constantly flushes on its own, etc.3.

All communication should be by email or your Google number, unless it's an emergency that requires immediate attention (fire, flooding, loss of heat in winter, etc.).

I've been using a couple different calculators including one put out by Robuilt, and one I saw listed here on Bigger Pockets several times from someone named John I believe.A few of the big remodel costs include having to replace a garage roof, which I got quotes around 5K, upgrading to furnace/central air from baseboard heat quoted at 12-14K, new windows and patio door quoted at 10K (so you can enjoy an unclouded view of the lake), new flooring $4500, adding dishwasher to kitchen $2000, optional adding bedroom to basement and finishing lower bathroom 10K.

We installed all new HVAC (heat pumps for all 6 units), windows, appliances, kitchens, floors, doors, fixtures, and water heaters.

If there wasn't enough heat the weld would leak water. 

It will require new split-system HVAC for each unit, which will provide forced air heating and cooling.

, water pressure, age of heating/cooling systems.