When issues occur with an older thermostat in Semmes, AL, it can significantly impact the home’s heating and cooling system. These problems can range from minor inconveniences to major damage, so it’s important to be aware of the potential pitfalls and to replace outdated units when they show signs of wear. Here are six common HVAC problems caused by old thermostats.

1. Inaccurate Temperature Readings

Older thermostats may not accurately read the home’s temperature due to a broken thermostat, a disconnected wire or improper calibration. They may also be slow to respond to changes in temperature and often experience “dead zones” where the system won’t turn on at a specific temperature. When the system runs, it might struggle to maintain the desired temperature and therefore use excess energy.

If your thermostat is giving inaccurate readings, upgrade your thermostat to a programmable one. Programmable thermostats have improved features like vacation programming, remote access and energy use tracking that will help you save money on your energy bills.

2. Insufficient Airflow

Outdated or malfunctioning thermostats can disrupt airflow throughout the home. It can cause high humidity levels, dust mites, biological growth and other pollutants. It can be especially harmful to residents with allergies or respiratory issues since these pollutants can cause further irritation of the airways.

To assist with this issue, you can install weathers stripping around windows and doors to seal any drafts while updating your thermostat with an energy-efficient model. Also, use an air purifier to trap particles and ensure consistent indoor air quality.

3. Electrical Issues

Thermostats contain electrical components with a high potential for failure. For instance, thermostats could have wires for the power supply, blower fan, heating and cooling. Over time, these components become worn and are unable to control the system properly.

The wiring system must be secure and connected properly to avoid electrical issues. If you suspect your wiring is inadequate, contact an HVAC technician for help, or consider installing a new thermostat.

4. Frequent Cycling

Frequently cycling on and off is a common problem due to an older thermostat. Thermostats may not be able to sense the home’s temperature correctly, causing the unit to cycle more frequently than necessary. Poor temperature settings could also be the culprit, causing short-cycling and wearing down the HVAC system.

Consider replacing your thermostat with a digital model that allows you to adjust the temperature accurately to resolve this issue. You can also schedule regular maintenance sessions for your system and have HVAC experts inspect it at least once or twice a year.

5. Increased Maintenance Costs

Without proper maintenance, older thermostats become dirty and clogged over time, leading to decreased efficiency. As a result, the HVAC system will require more expensive repairs and replacements due to heavy usage.

Ensure you clean the indoor unit to keep your system running smoothly and efficiently. Remove any dirt or debris clogging the vents and replace your air filters regularly. Additionally, consider installing a new thermostat to improve energy efficiency and reduce maintenance costs.

6. Anticipator Misalignment

The anticipator is a metal coil in older thermostats that help maintain the desired temperature by contracting and expanding. Over time, it can become misaligned due to dust and dirt buildup or improper wiring. This will cause the HVAC system to run longer than necessary, resulting in higher energy bills.

Recalibrating the anticipator is necessary to prevent misalignment and to ensure the system runs efficiently. You can do recalibration by removing the thermostat cover and adjusting the anticipator. If the anticipator does not work well even after this process, replace the thermostat to avoid further issues.

Old thermostats can cause problems with your home’s heating and cooling system. We offer HVAC services, including thermostat installation and repair, to help you keep your home comfortable and energy efficient. Contact Air Specialty for maintenance services to avoid further issues and protect your home’s HVAC system in Semmes, AL.

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