HackerTube / Video
Forced-air Furnaces: The What, Why, and How
Technology Connections
Technology Connections explains what forced-air furnaces are, how they work and why they need electricity. He covers combustion, airflow and the parts of a modern furnace.
HN people point to it as the full explanation of how gas furnaces work, mostly in threads on heating, power outages and gas appliances.
6 Hacker News mentions · 2021–2026