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Why Does My AC Keep Shutting Down?
Posted On: June 25, 2024
If your air conditioning (AC) system keeps shutting down, it could be due to several reasons. Here are some common causes to consider:
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Thermostat Issues: Check if the thermostat is functioning correctly. It could be set too low, or there may be a malfunction causing it to shut off prematurely.
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Dirty Air Filters: Clogged filters can restrict airflow, causing the system to overheat and shut down. Make sure to replace or clean the filters regularly.
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Electrical Problems: Issues such as faulty wiring, a tripped breaker, or a blown fuse can cause the AC to shut down. It’s essential to check your electrical panel and connections.
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Refrigerant Leaks: Low refrigerant levels due to leaks can cause the AC to freeze up or fail to cool properly, leading to shutdowns. A professional should check for leaks and recharge the refrigerant.
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Overheating: If the AC unit is overheating, it may have a problem with the compressor, condenser, or another component. This could be due to poor ventilation or a malfunctioning part.
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Faulty Capacitor or Relay: The capacitor or relay may be malfunctioning, preventing the AC from starting or causing it to shut off unexpectedly. These components often need to be replaced by a technician.
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Sensor Issues: Problems with sensors, such as the temperature sensor, can lead to the system shutting down. Ensure that the sensors are clean and correctly positioned.
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Drainage Problems: A clogged drain line can cause water to back up, leading to shutdowns. Check the drainage system and ensure it is clear.
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System Age: Older units are more prone to breakdowns. Consider whether your system is due for replacement if it’s frequently shutting down.
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Blocked Vents or Registers: Ensure that all vents and registers are open and unblocked to allow proper airflow throughout your home.
If you’ve checked these issues and your AC still keeps shutting down, it’s best to call a licensed HVAC technician to diagnose and fix the problem. They have the tools and expertise to address more complex issues safely.
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See What Our Customers Are Saying:
Jan 1, 2015
Dave was great in helping me get the proper units for my property, as well as getting them installed. The installers arrived when they said they would, and completed the project on time, and professionally. If I needed another furnace, I would use Dave again.
Jan 1, 2015
I have known Greg and Grant Dainty for many years and have used their company for my house and business. I recommended them also for my parents and sister and they all have been very satisfied with the quality of work for a reasonable price. I just recently had them install a new HVAC system in an older house and was very pleased with their work. Craig in Pickering. After meeting with various heating and air conditioning contractors I was referred to Twin Tech Heating and Cooling through a family member. Greg and Grant arrived at my home and provided me with an estimate and a plan as to how they were going to remove and replace my furnace and air conditioner. On the day of install Greg and Grant arrived at my home on time and were very professional and extremely courteous as to any questions or concerns that I had. The removal and install was truly professional and the attention to detail was exactly what I was looking for. Ive seen many installs from other contractors and I couldnt be any happier to have had such a clean looking install. The sheet metal work, ducting and venting all look fantastic. Upon completion Greg and Grant left me feeling extremely happy and very fortunate of a job well done. Thanks again Twin Tech!!
Jan 1, 2015
My old furnace had finally broken down for the last time when contacted twintech to have a new furnace installed They were prompt, knowledgeable and very reasonably priced. They did such a great job i tell all my friends and family about this company.
Jan 1, 2015
To whom it may concern, I recently had TwinTech (Greg and Grant Dainty) replace my furnace and service both my gas fireplaces and air conditioning unit. They were professional, courteous and very fair in their pricing. I would gladly recommend TwinTech to anyone needing work done. I can be contacted at 905-626-XXXX.
Jan 1, 2015
My Fiancé and I have relied on Twintech Heating and Cooling now for the better part of the last 10 years. In that time, Greg has installed a furnace, an air conditioner, and a heat-pump at our residence in Toronto. In each instance Greg and his team were a pleasure to deal with. They were courteous and professional throughout the whole process and the quality of their work is first rate. Our experiences have always been extremely positive and we have referred his services numerous times to our friends and family. Without hesitation, I would recommend Greg and TwinTech Heating and Cooling to anyone looking to service or replace their existing heat/AC equipment
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