Troubleshooting Your Thermostat

5 Common Thermostat Issues & How To Fix Them

Your thermostat is like the brain of your heating and cooling system. When this device stops working properly, your home may become uncomfortable quickly. If you need help beyond DIY, explore our core thermostat services or request fast thermostat replacement. We can guide next steps.

Why Is My Thermostat Not Reaching the Set Temp?

• Dirty sensors: Thermostats use temperature sensors to tell when to turn on the HVAC system. Over time, dust, dirt, and lint can find their way into the thermostat housing and block the sensors. To fix this problem, remove the cover and clean the parts inside using a soft-bristled brush. If airflow is struggling too, consider seasonal AC maintenance to keep the whole system clean. It helps accuracy.
• Damaged sensors: If your attempts to clean the sensors do not work, they may be damaged, resulting in a higher or lower readout than the actual ambient temperature in the room. You will need help from a professional to fix this issue, which you can schedule through our quick schedule service form. We respond promptly.
• Poor thermostat location: Is your thermostat exposed to direct sunlight, heat from an air vent, or drafts from an old window? You may need a professional’s help relocating your thermostat where it can get a more accurate temperature reading. If the equipment runs constantly, we can also assess system sizing and provide targeted HVAC repair as needed. An on-site check helps.

Why Won’t My Thermostat Let Me Change the Temperature Setting?

• Locked unit: Check if the child lock setting is activated. You will need to disable it before you can change the temperature. If controls keep freezing or lagging, ask about smart options during thermostat replacement. New models are user-friendly.
• No power: If the thermostat is not working at all, there could be a power issue. Try checking the circuit breaker box or replacing the batteries. If the system itself will not start, our team can perform safe AC repair or furnace diagnostics. Restoring power flow matters.
• Bad wiring: The thermostat may be unresponsive if the wiring has gone bad. Remove the cover and check inside for loose, detached, or corroded wires. If you spot any problems, contact an HVAC technician for assistance from our NATE-certified technicians. Expert wiring fixes last.

Why Are My Heating and Cooling Systems Continuously Running?

• Auto fan: Check the thermostat setting. If the fan is set to “on,” the blower circulates air continuously. To change this, set the fan to “auto” so it only operates when the furnace or air conditioner is running. If comfort still suffers, we can evaluate blower settings during HVAC maintenance. Small adjustments help a lot.
• Faulty thermostat: There could be an internal fault with the thermostat. Call a professional for help diagnosing and repairing the problem, or consider smart upgrades during an AC installation. Smarter controls improve runtime.

Why Is My Thermostat Blank?

• Dead batteries: TThe first troubleshooting tip for a blank thermostat is to remove the cover and replace the batteries. If the screen powers on now, you are good to go. If cooling still fails, our team can handle urgent emergency AC repair. Rapid response matters.
• Tripped breaker: For hardwired thermostats, the issue could lie with a tripped circuit breaker. Check your electrical box and reset any tripped breakers you find. If trips repeat, we can test components during thorough HVAC repair. We will find the cause.
• Tripped safety switch: Check around your furnace or air conditioner for a safety switch. It may have tripped by accident. However, if you notice excess moisture or high temperatures within your system, call an HVAC professional to schedule an inspection. For zoned setups, we also offer precise ductless repair. Targeted fixes keep rooms comfortable.

Why Is My Thermostat Not Turning On?

• • Incorrect settings: First, check that your thermostat is set correctly. If you want to heat your home, make sure it is set to “heat.” If you want air conditioning, make sure it is set to “cool.” If cooling remains sluggish, our AC replacement team can evaluate aging equipment. Honest options are key.
  • Overheated HVAC system: If the HVAC system runs briefly, shuts back off, and will not turn on again, the equipment may be overheating. Try replacing the filter and opening all vents to improve airflow. Also, be aware that air conditioners can take at least three minutes to turn on again after shutting off to avoid damaging the compressor. If heating is affected, we provide reliable furnace repair to stabilize performance. Steady airflow protects parts.
  • Broken thermostat: If no other troubleshooting tips do the trick, your thermostat may be broken and require a replacement. When upgrading controls, ask us about compatible systems and available current specials to save on select services. Savings help.

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Schedule Thermostat Replacement Services

Hopefully, these troubleshooting tips worked, and your thermostat is operating normally again. If not, Conditioned Air can set things right. Call us the next time your thermostat stops working, and we will diagnose the problem and recommend a cost-effective repair. If an upgrade is the better choice, we can install an energy-saving programmable or smart thermostat. With over 80 years of experience, you can trust our team to recommend the best options for your budget and comfort needs. Read recent customer reviews and reach out through contact our team for guidance. We are here to help.

To schedule thermostat replacement in the Macon, GA, area, contact us at 478-742-8768.

Thermostat FAQs

Should I try replacing thermostat batteries first?

Yes. Many blank-screen issues are battery related. If problems continue, this post explains when to replace thermostat batteries. Simple fixes come first.

Is a smart thermostat worth the upgrade?

Smart models add scheduling, geofencing, and better reports. Compare options in our guide on smart vs programmable. Smarter control saves energy.

What if my heat will not turn on at all?

Start with settings and filters, then check breakers. If the system stays off, review this quick guide on heating will not turn on. We can help if needed.

When should I schedule AC maintenance for accuracy?

Spring is ideal before heavy use begins. Learn the best timing in our note on the best AC tune-up time. Regular care improves comfort.

My furnace keeps running. Is that the thermostat?

It could be a setting or a control fault. Start here with forced-air troubleshooting. If it persists, we can diagnose the cause.