HVAC

https://www.wikidata.org/wiki/Q1798773

Field Hierarchy

Parent
Physics 33M papers	Engineering 25M papers	Mechanical engineering 5.5M papers	Thermodynamics 5.1M papers
Air conditioning 58.8k papers
Current
HVAC 17.3k papers
Child
Energy recovery ventilation 1,831 papers

Trends

Notes

History