One common reason why a thermostat won’t go above 70 degrees is due to a setting error. Some thermostats have a maximum temperature limit that can be set by the user, and if this limit is set to 70 degrees or lower, the system will not allow the temperature to go any higher. Additionally, some thermostats have a “hold” or “lock” feature that prevents the user from adjusting the temperature beyond a certain point. Checking the thermostat settings and disabling any temperature limits or locks may solve the issue.
Common Causes of Thermostat Limitations
Faulty Thermostat
One of the most common causes of a thermostat not going above 70 is a faulty thermostat. If the thermostat is not functioning properly, it may not be able to accurately read the temperature in the room, resulting in incorrect temperature readings. This can cause the thermostat to shut off the heating system prematurely, preventing the temperature from rising above 70 degrees Fahrenheit.
Heating System Issues
Another common cause of a thermostat not going above 70 is issues with the heating system itself. This can include problems with the furnace, boiler, or heat pump. If the heating system is not functioning properly, it may not be able to produce enough heat to raise the temperature above 70 degrees Fahrenheit. Additionally, clogged air filters, malfunctioning thermostats, and other mechanical issues can also prevent the heating system from functioning properly.
Incorrect Thermostat Settings
Finally, incorrect thermostat settings can also cause a thermostat not to go above 70. If the thermostat is set to a specific temperature limit, it will not allow the temperature to rise above that limit. Additionally, if the thermostat is set to “auto” mode, it will only turn on the heating system when the temperature drops below a certain threshold, preventing the temperature from rising above 70 degrees Fahrenheit.
Overall, there are several common causes of a thermostat not going above 70. By identifying the underlying cause of the issue, homeowners can take steps to resolve the problem and ensure their home stays warm and comfortable.
Troubleshooting Steps
If your thermostat won’t go above 70, there are a few troubleshooting steps you can take to identify and resolve the issue. The following subsections outline the steps you can take to troubleshoot the problem.
Verifying Thermostat Settings
The first step is to verify that the thermostat settings are correct. Ensure that the thermostat is set to “Heat” mode, and that the temperature is set to a value above 70. If the thermostat is programmable, check that the program is set correctly and that the temperature is not being automatically adjusted to a lower value.
Inspecting the Heating System
If the thermostat settings are correct, the next step is to inspect the heating system. Check that the air filter is clean and not clogged, as a dirty filter can restrict airflow and prevent the system from heating properly. Also, check that the vents and registers are open and unobstructed, as closed or blocked vents can limit the amount of warm air that reaches the room.
Testing Thermostat Functionality
If the thermostat settings and heating system are functioning correctly, the final step is to test the thermostat’s functionality. First, check that the thermostat is receiving power by verifying that the display is on. Next, use a multimeter to test the voltage at the thermostat terminals. If the voltage is below the expected range, the thermostat may need to be replaced.
In conclusion, by following these troubleshooting steps, you can identify and resolve the issue of a thermostat that won’t go above 70.
Professional Assessment
When to Contact a Technician
If the thermostat won’t go above 70, it may be time to call in a professional technician. While there are some troubleshooting steps that homeowners can take to try to resolve the issue, there are certain situations where it’s best to leave it to the experts.
For example, if the thermostat is displaying an error code or if it’s completely unresponsive, it’s likely that there’s a more serious issue at play. Additionally, if the thermostat is old or outdated, it may be time for a replacement. A professional technician can help diagnose the issue and recommend the best course of action.
What to Expect During a Service Call
When a technician arrives for a service call, they will likely start by asking the homeowner about the issue they’re experiencing with the thermostat. They may also ask about the age of the thermostat and any recent changes to the HVAC system.
Next, the technician will likely perform a series of tests to diagnose the issue. This may include testing the wiring, checking the voltage, and verifying that the thermostat is properly calibrated. Depending on the issue, the technician may need to replace certain parts or recommend a full replacement.
Overall, it’s important to work with a qualified technician to resolve issues with a thermostat that won’t go above 70. With their expertise and experience, they can help ensure that the HVAC system is functioning properly and that the home is comfortable year-round.
Preventative Measures
Regular Maintenance Tips
Regular maintenance can help prevent your thermostat from failing to reach above 70 degrees. Here are some tips to keep your thermostat in good working condition:
- Clean the thermostat regularly to remove any dust or debris that may have accumulated on it. Use a soft cloth and gently wipe the surface of the thermostat.
- Check the batteries in your thermostat and replace them if necessary. Weak batteries can cause the thermostat to malfunction.
- Make sure that the thermostat is properly installed and wired. Loose wires or improper installation can cause the thermostat to function improperly.
- Keep the thermostat away from sources of heat or cold, such as windows, doors, or air vents. Direct sunlight or drafts can affect the thermostat’s temperature readings.
Upgrading Your Thermostat
If you’ve tried regular maintenance and your thermostat still won’t go above 70 degrees, it may be time to upgrade your thermostat. Here are some options to consider:
- Programmable thermostats allow you to set different temperatures for different times of the day. This can help save energy and money on your heating bills.
- Smart thermostats can be controlled remotely using your smartphone or tablet. They can also learn your heating and cooling preferences and adjust accordingly.
- Zoned heating systems allow you to control the temperature in different areas of your home. This can be especially useful if you have rooms that are difficult to heat or cool.
By following these preventative measures, you can help ensure that your thermostat functions properly and efficiently. If you’re still having trouble getting your thermostat to go above 70 degrees, consider upgrading to a newer model or contacting a professional for assistance.
