A brief history of underfloor heating demonstrates originally it was an extremely intricate and laborious task to warm the floors of one's home. Originally developed thousands of years B.C. it was a system devised of ducts beneath the floor and flues built directly into the wall structure. Heat from fires tended by numerous servants, rose and circulated up and through this intricate system. The circulated heat then warmed the floors in addition to the walls of the vast stone homes. Typically, more than one furnace was necessary for each home.
Today underfloor heating is devised of pipes to carry heated water to heat the floors. Another method now commonly used is electrical cable placed directly under the ground to heat floors. Underfloor heating today could very well be one of the energy saving forms of heating used for the house. Even homes with numerous floors are actually heated safely and efficiently with underfloor heating. Underfloor heating systems of today's era are economical, and provide adjustable temperatures for various rooms at any given time. Additionally the systems found in today's home construction are more affordable for the overall populace.
Unfortunately, vloerverwarming of this heating system had no idea of the lurking dangers of the heating system. With flues in the walls allowing heat into each room, carbon monoxide was also fed into the rooms. Naturally, there is no way to determine the amount of carbon monoxide deaths, as a result of this modern heat in ancient times. Undoubtedly the death toll might have been high but never connected to the carbon monoxide.