International HVAC Consultant, Forensics investigator in HVAC wrongful death (CO) poisoning law suites and mold cases. Over 60 yrs. in many aspects of this Industry. Mechanical and boiler Licensed. HVAC Industry history. Concepts in all forms of heating, cooling,  humidity control, air change, filtration, ventilation and commutation. We talk to all people homeowners, business owners, service and install technicians, sales, install designs, equipment honest information. Safety and codes issues. All fuels and mediums.