Stay Safe and Enjoy Comfort in Your Home
You might be wondering if you need to regularly refill the refrigerant in your AC unit like you would with gas in your car. AC systems do NOT consume refrigerant, also known as Freon. Understanding the reasons for refrigerant leaks in AC units is the first step.
The refrigerant system in an air conditioner is a closed loop. It should not use up or run out of coolant, so understanding the reasons for refrigerant leaks in AC units is important for every homeowner.
Understanding Refrigerant’s Role
To understand the importance of spotting leaks early, we should explore AC refrigerants. Refrigerants can be hazardous if handled improperly. It is best to always call a professional for help.
Refrigerant is essential for cooling. It is the liquid your AC unit cycles through the system’s pipes to get rid of heat. It transitions between liquid and gas forms as it absorbs and releases heat.
This process lets your AC unit blow cool air. But, a leak compromises this delicate operation.
Main Reasons for Refrigerant Leaks in AC Units
Several factors contribute to refrigerant leaks. Addressing this issue will certainly save money in the long run.
Formicary Corrosion
The most common cause of AC freon leaks is likely erosion of the metal over time due to formic acid. Indoor air pollutants can mix with moisture on the evaporator coil, which then creates formic acid.
This acid slowly eats away at the copper tubing. Over the years, it has created pinhole leaks. They are also known as champagne leaks because the hole shows up with bubbles.
Manufacturers are using all-aluminum indoor coils to address the corrosion issues.
Wear and Tear is a Top Reason
Older AC units experience wear. Connections can weaken and rubber seals around valves may deteriorate.
Regular maintenance and servicing help find and fix small issues. Age and use cause wear and tear and connections get worn.
Mechanical Vibrations Can Cause Issues
Several things can cause big mechanical vibrations in air conditioning units. If contractors solder connections instead of using on-site brazing, the vibrations can cause the connection to fail.
Sometimes, two copper lines may cross inside a unit. Normal vibrations can cause them to rub, creating a hole.
Physical Damage Can Occur
Physical damage to the condenser coil often comes from outside factors. Severe weather and lawn equipment can hurt the aluminum.
AC Unit Factory Defects
Sometimes, air conditioners leave the factory with a flaw. This is very rare though, because of tight controls these days.
Corrosion and vibration affect AC units. Factory flaws can happen to any product.
Incorrect AC Installation
HVAC installers also make connections on-site using the process known as brazing. Field joint issues are easy to see and fix since the connections are open. Sometimes units come with a low freon charge from the factory.
Installers often just release the charge and leave. They do not take time to follow all proper commissioning steps.
Identifying AC Refrigerant Leaks
Recognizing the signs of a refrigerant leak will save costly issues in the future. There are obvious hints of coolant leaks.
Reduced Airflow
If your AC is running but not blowing cool air, that is a bad sign. This indicates it might be low on refrigerant. All other parts of the system are probably working properly.
If the AC unit is low on coolant it is impossible to keep your home cool. Get an expert air conditioning repair person to look at this problem.
Frozen Coils on the AC Unit
A frozen evaporator coil is another sign of a coolant leak. When refrigerant levels drop, the coil’s temperature will also drop and form ice. You may see ice form around the insulated tubing, this shows the freon is low.
The first sign might be water on the floor. A blocked drain pan will cause water issues. Sometimes the humidity will cause ice issues on your system.
While low Freon and leaks often lead to frozen coils, there can be other factors. Check to see if the air filter is clogged and if the indoor fan motor is working properly.
Humidity is on the Rise
Your home comfort levels include many aspects. The Mayo Clinic shows the best humidity level is 30% to 50%.
Spiking Utility Bills
A refrigerant leak has negative effects on various areas. A leak could result in increased utility costs.
You will think of putting in Freon to address the spike. The key though is to have someone address and repair it immediately.
Odd Noises From Your AC
If the leak is large, it makes a gurgling noise. If there’s a hissing sound from the AC, there may be cracks or holes.
If it is coming from the coils then the coolant might be getting out. Cracks show serious trouble and call for pros.
Why Leaking Refrigerant is a Problem
Leaking refrigerant is bad for the AC unit, and can also impact health. Coolant leaks lower the system’s ability to cool the home. Leaking coolant impacts home comfort greatly.
It is key to take care of the issues fast. Refrigerant leaks impact efficiency and air quality.
It contains toxic chemicals and is a big hazard. Leaks expose you to harm. Freon poisoning symptoms include:
- Trouble breathing
- Headaches and nausea
- Vomiting and coughing
- Irritation to eyes and skin
- Fluid in the lungs and irregular heartbeats
- Brain fog and fainting
In extreme cases, refrigerant poisoning can lead to seizures and even unresponsiveness. It’s important to always be safe.
You have to be a licensed professional with proper credentials for this. To properly work with these harmful chemicals and to remove them the right way requires special certifications.
If you don’t comply you can be severely fined.
What Happens When Your AC Loses Refrigerant?
When an air conditioner loses refrigerant, several operational issues occur. Without enough refrigerant, the AC struggles to cool the air. The system will cycle between working overtime and shutting down from being overworked.
Here are ways refrigerant helps improve system functionality. A decrease will significantly impact the health and safety of all of your AC’s core components.
| Refrigerant Function | Impact of Leak |
|---|---|
| Heat Absorption | Reduced cooling, warmer air output |
| Pressure Regulation | System struggles, inconsistent cooling |
| Coil Temperature Control | Coils freeze, blocking airflow, no cooling |
| Compressor Protection | Increased chance of compressor problems |
| Overall system efficiency. | Higher power bills, constant repairs |
Professionals follow steps when addressing the core problems.
Repair or Replace AC Unit?
Many people see coolant leaks as a do-it-yourself repair job. Many though opt to replace their AC when they have issues. Weigh the choice with many factors like what has caused the issues to begin with.
Some problems require certified techs. Doing this type of repair can be harmful. You should consult the manufacturer’s warranty for the terms and conditions of DIY tasks. It is typically much safer to get in contact with an HVAC professional.
Some leaks use the outdated R-22 freon. Starting in early 2020, new steps to phase out R-22 have started to take shape. Production is also being reduced. This change limits how easy it will be to buy and prices will go way up.
Old AC systems have more problems than just a leak, sometimes the difficulty level can also rise with older systems.
Conclusion
Knowing the reasons for refrigerant leaks in AC units can show you why it is important to make use of professional help. Freon leaks are a problem for the AC unit, homeowners, and the environment.
Seeking timely solutions will improve the health and safety of your home. Contact us today for more information or to schedule a free consultation.
