Air Conditioning

Mechanical control of indoor temperature and humidity through refrigeration cycles, fans, ducts, and building-scale climate systems.

Core metadata

ID: air_conditioning
Era: Industrial
First known date: 1902 (exact)
Region: United States
Review status: source_checked
Maturity: N/A

Prerequisites

Dependents

Fields

None.

Node sources

Willis Carrier (Encyclopaedia Britannica, 2026, textbook) • Supports: node
Locator: Britannica states that Carrier designed the first system to control both temperature and humidity in 1902.

Prerequisite edge evidence

Edge/source evidence summary:

Prerequisite edges: 4
Average edge confidence: 68%
Prerequisite sources: 3
expert_inference: 4

Prerequisite	Type	Confidence	Evidence level	Note	Sources
Mechanical Refrigeration (refrigeration)	enabling	68%	expert_inference	Mechanical Refrigeration provides a capability that enables this technology without being the only possible path.	No sources recorded.
Electric Motor (electric_motor)	enabling	68%	expert_inference	Electric Motor provides a capability that enables this technology without being the only possible path.	The birth of electric motion (Royal Institution, 2021, museum) • Supports: edge
Thermodynamics (thermodynamics)	enabling	68%	expert_inference	Thermodynamics provides a capability that enables this technology without being the only possible path.	Thermodynamics (Encyclopaedia Britannica, 2026, textbook) • Supports: edge
Precision Machine Tools (precision_machine_tools)	enabling	68%	expert_inference	Precision Machine Tools provides a capability that enables this technology without being the only possible path.	Machine Tool (Encyclopaedia Britannica, 2026, textbook) • Supports: edge

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