the.com/hvac
The invisible system fighting weather for control of your soul, one thermostat war at a time.
means Heating, ventilation, and air conditioning — the machinery that keeps indoor air at a temperature humans grudgingly tolerate.
from An engineering acronym from the early 20th century, when buildings finally got too big to just open a window and pray.
Willis CarrierInvented modern AC in 1902 to fix humidity, not heat.
Energy hogRoughly half of home energy use.
V mattersVentilation quietly prevents stale, sickness-spreading air.