Thermostat-like device that measures the amount of water vapor in the air and turns a humidifier or dehumidifier on and off accordingly. …
HVAC
Heating, ventilation, and air conditioning. …
Hopper Window
A window that contains a single sash that tilts inward. …
Hose Bibb
A threaded faucet connection for devices such as a washing machine. …
Hot Wire
An ungrounded conductor that carries electrical current from the source. Hot wires usually (but don't always) have black or red insulation. …
House Wrap
A polyethylene barrier wrapped around a house to save energy. …