The thermostat was invented in 1885 by Albert Butz and was called a "damper flapper." This first thermostat was nothing more than a furnace flap, which lifted as the room cooled and lowered as the room warmed.Know More
By the early 1900s, Butz's thermostat patent had been bought by Mark Honeywell. Honeywell later added a built-in clock to the original design, which allowed homeowners to turn down the heat during the evening and pre-set the temperature for the morning. Since the addition of a built-in clock, other improvements to the thermostat include digital screens, touch screen technology and wireless remote access.