![]() The most common types of mechanical thermostats typically use either bimetallic strips or bellows filled with gas. This principle governs the switching off or on of the electric circuit. ![]() Thermostats work on the principle of thermal expansion. ![]() And, some thermostats are so advanced that they can be controlled remotely using a smartphone or Internet connectivity. ![]() Both are responsible for keeping a close check on the indoor ambient temperature, but function in a different way. Thermostats can be mechanical or electronic. This switch opens or closes, causing the electrical circuit that is responsible for the heating and cooling to get completed or interrupted. Today’s thermostat is a heat-activated switch that comes with a temperature sensor. Modern-day thermostats do the same kind of work, just with a lot more technology to assist them. Although a simple device, it paved the way for modern thermostats. When the mercury in the thermometer reached a certain level, the float moved, causing the damper to close. The thermostat was invented in the 17th century, and it consisted of a float present in a mercury thermometer and connected to a damper cover placed on a furnace. It is a gadget that is part of your heating and/or cooling system that silently measures the temperature inside your home and then decides based on the reading whether the heating or cooling needs to be activated. What is a Thermostat?īefore looking at how a thermostat works, it is also important to understand what a thermostat is. Homeowners often don’t pay too much attention to the humble thermostat, which is a cleverly designed gadget that ensures ambient temperature is always comfortable, regardless of the outside temperature. Similarly, in the winter months, you can crank up the thermostat and keep cozy and warm. Thankfully, you can turn down the thermostat of your HVAC unit and create a comfortable and pleasant indoor temperature. When summer sets in, it can be a misery to wage a battle with the heat.
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