The object) aimed at in the improvements, is to obtain as much caloric as possible from the furnace ... air passes, and by fixing outside the same air chambers or drums, through which the hot ...

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...

Ultimately, Phil feels that the most benign heater – the oil heater – is the preferred model for heating up a room rather than the other models, which are either blowing out hot air or ...

As their name suggests, these ducts channel the cooled air back to the furnace or heat pump, where it gets hot again ... it uniformly throughout the room. Also, forced air systems blow around ...

This futuristic-looking home appliance pulls double duty, working as an oscillating tower fan, heater and an air purification system in one, cleaning the room as it cools or heats. It’s another ...