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📘 A thermostat compares two temperatures

A thermostat compares two temperatures

lessons

~10 min

to learn

🔬 Science

subject

Adults

level

Start the course →

What you’ll learn

The target
Sensing
Switching
Deadband
Heating call
Cooling call
Fan control
Schedules
Heat pumps
The loop

Questions this course answers

What does a thermostat directly measure?

Its sensor measures local air temperature.

What is a setpoint?

The controller compares measured temperature with the selected target.

Why use a differential or deadband?

A gap between start and stop thresholds prevents short cycling.

What does a relay do?

A relay lets a low-power control signal switch another circuit.

What does a heat-pump changeover valve do?

The valve changes the heat pump's operating direction.

Grounded in trusted sources

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Every Wunder lesson is built from real, reputable sources — never invented.

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