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Advice Need For This AC Issue
Posted On: May 23, 2023
My AC stopped blowing cold air.
The unit outside seems to be working.
The fan is spinning but no cold air comes out.
I'm calling someone to come take a look at it today but was curious if anyone knew what it could be and give me a heads up before.
Question from user AdSweet3673 at AirConditioners at reddit.
Answer:
If your AC unit is not blowing cold air even though the outside unit appears to be running, there could be a few potential issues causing this problem. Here are some common reasons for this situation:
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Refrigerant leak: Low refrigerant levels can result in insufficient cooling. If there's a leak in the system, it needs to be repaired, and the lost refrigerant should be replaced by a professional HVAC technician.
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Dirty evaporator coil: The evaporator coil is responsible for absorbing heat from the air, and if it's dirty or covered in debris, it can't perform its job effectively. This will lead to reduced cooling efficiency.
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Blocked condenser unit: The condenser unit (outside) releases heat to the outside environment. If the condenser coils are dirty or blocked by debris, it can hamper the cooling process.
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Faulty compressor: The compressor is a crucial component responsible for circulating the refrigerant and pressurizing it. If the compressor is faulty or not working correctly, it can lead to no cooling.
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Electrical issues: Problems with electrical components like capacitors, relays, or contactors can also cause the AC to stop blowing cold air.
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Thermostat malfunction: A faulty thermostat may not signal the AC to cool properly, resulting in no cold air.
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Frozen evaporator coil: If the evaporator coil freezes due to various reasons (e.g., dirty air filter, low refrigerant), it will obstruct airflow and lead to no cooling.
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Airflow restrictions: Any restrictions in the airflow, such as blocked vents or dirty air filters, can impede the cooling process.
Since you've mentioned that the outside unit seems to be working with the fan spinning, the compressor might be running. However, the lack of cold air suggests that there could be an issue with the indoor components (e.g., evaporator coil, blower motor) or the refrigerant level.
It's a good decision to call a professional HVAC technician to diagnose and fix the problem. They have the expertise and tools to pinpoint the issue accurately and perform the necessary repairs. Remember to provide them with any relevant information about the unit's recent performance to help them troubleshoot more efficiently.
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Jan 30, 2019
During the summer, I previously hired TwinTech to replace my air conditioner when it failed. They did an excellent job so when I decided to proactively replace the furnace I contacted them. The furnace I had was 22 years old and showed signs of internal leakage. It still worked but rather than wait to have it fail in cold weather, I decided to purchase a higher efficiency model before it failed and take advantage of energy efficiency rebates. TwinTech offered very useful advice on the make and model of furnace to choose including high efficiency and variable speed motor. The price was reasonable, TwinTech arrived at the allotted time, installed the new furnace (including some re-routing of exhaust lines since the existing ones were too close to other vents), removed the old furnace, tested the installation and cleaned everything up. Overall, it was a good experience, they did a great job and the new furnace is working well.
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Jan 14, 2019
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Dec 28, 2018
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They were Timely and professional. They were very Knowledgeable with answering all of my questions.
Dec 23, 2018
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