I am new to HVAC, so please keep that in mind if my questions appear incomplete or strange.
1. Is "eth gylcol water" used as heat carrying agent poisonous?
2. Are there any safe alternatives to eth glycol-water?
3. Is it worth investigating setting up a power unit solely for the purpose of running electric heaters? Assuming that community electricity supply is not reliable. And assuming a typical office building of 8500 sqft area.