Will my furnace work without a thermostat?

Furnaces are simple machines that work on an ‘on-off’ switch. Food will get hot without a thermostat as long as there is fuel to burn.
This is why furnaces usually turn off when the heat in your home reaches the set temperature (you don’t need it anymore). Your furnace will still work if you remove the thermostat, though – there is nothing it would replace.
For your furnace to work, you do not need a thermostat.
A furnace without a thermostat won’t function correctly and will consume more electricity. It could also overheat because it constantly runs to maintain the desired temperature.
The answer to this question is yes, but not for long! Without a thermostat, your furnace would work, but it won’t work very well. You will save on your electricity bills without a thermostat because it will run continuously without interruption to maintain the desired temperature. However, you’ll notice that your home gets hotter than before, and if your furnace doesn’t have an automatic cut-off system, it can lead to eventual damages and malfunctions.
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Furnaces provide heat for your home without thermostats.
A furnace is a device that warms the air in your home by using a system of ducts and fans. Furnaces do not require thermostats to function properly, but you may need one to regulate the temperature in your house.

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