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Why Does My A/C Unit Keep Freezing?
Posted On: April 4, 2023
Question from user Topher1326 at AirConditioners at reddit.
Answer:
If your A/C unit keeps freezing, there are a few possible reasons why this may be happening:
Dirty air filter: A dirty air filter can restrict airflow over the evaporator coil, causing it to freeze.
Check the air filter and replace it if it's dirty.
Low refrigerant levels: If your A/C unit is low on refrigerant, it can cause the evaporator coil to freeze.
This is often a sign of a leak, and a professional technician should be called to repair the leak and recharge the refrigerant.
Thermostat issues: If your thermostat is not working properly, it may be causing your A/C unit to run too long, which can result in the evaporator coil freezing.
Check the thermostat settings and make sure it's functioning properly.
Dirty evaporator coil: If the evaporator coil is dirty or clogged, it can restrict airflow and cause the coil to freeze.
A professional technician can clean the coil and restore proper airflow.
Fan problems: If the fan motor or blades are not working properly, it can cause the evaporator coil to freeze.
A technician can inspect the fan and repair or replace any damaged parts.
If you've tried these troubleshooting steps and your A/C unit is still freezing up, it's best to call a professional technician to diagnose and repair the problem.
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Feb 16, 2019
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Feb 13, 2019
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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.