How HVAC Works
What Is a Thermostat (Smart/Programmable)?
A programmable thermostat runs a fixed daily/weekly schedule; a smart thermostat adds remote control, usage learning, and often integration with the rest of your HVAC system's diagnostics.
This definition is pending sign-off from a licensed HVAC reviewer.
Why It Matters to You
A miscalibrated thermostat can make a perfectly healthy system seem like it's failing — a quick calibration check is one of the first things worth ruling out before assuming a bigger repair is needed.
Practical Guidance
Thermostat calibration is a standard part of a seasonal tune-up — if you've never had it checked, ask for it at your next visit.
See it in context
→ What to Expect on an AC Tune-Up
Related Terms
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