Tag: refrigerant

Technician servicing an AC unit with a wrench and torch, flames visible from the pipe, showcasing HVAC repair by Air Works.

How to Spot a Refrigerant Leak

Is the AC Leaking?

Air conditioner refrigerant leaks cause HVAC systems to malfunction during the year’s hottest months. AC systems may cease to blow cool air or, in some cases, produce warm air. Since air conditioning units are complex systems with various components that must work together, figuring out the source can be tough for homeowners without experience.

Frozen Evaporator Coils Play a Key Role

Frozen evaporator coils inside an air conditioning unit, showing copper lines and ice buildup, illustrating potential HVAC issues related to refrigerant leaks and indoor air quality.Evaporator coils are usually located inside the blower compartment of an air conditioner. Their purpose is to retain cold air conditioning refrigerant to remove indoor heat. If an evaporator coil begins to leak, it can cause higher monthly energy bills.

A chemical reaction between copper and humidity causes evaporator coil leaks. When volatile organic compounds begin to corrode the copper, a refrigerant leak is created. If mold has formed, it can damage the copper by causing frozen evaporator coils.   

Reducing volatile organic compounds in evaporator refrigerant can prevent a leak. This will also reduce indoor chemicals. If an AC coil begins to leak, it may create dangerous toxins that must be eliminated immediately.

Warm Indoor Temperatures

AC refrigerant leaks affect an air conditioner’s ability to cool air effectively. Since air may still travel through the vents, it can be difficult for homeowners to recognize the broken AC immediately. If the AC has been running for several hours, but the indoor temperature still feels warm, this is a sign of system damage.

An average cooling cycle should last approximately 20 minutes. The desired temperature is never met if the AC is constantly running. Not only does this affect indoor comfort, but it can also mean higher bills. An HVAC system that is not energy efficient can cost hundreds of extra dollars during the summer.

Refrigerant leaks are not uncommon in older air conditioners. If the system was undercharged during installation, new refrigerant can be added relatively easily. If it is low due to frozen evaporator coils, a refrigerant leak detector can help. Trying to repair refrigerant leaks without the proper tools can cause more damage in the long run. 

Strange Sounds  

Person listening intently with hand cupped to ear, illustrating the importance of noticing unusual sounds from HVAC systems.A noisy air conditioner is not normal, even for older units. If homeowners notice a hissing or gurgling sound, it is likely due to a leak. Usually, this is one of the first signs of a problem.

If a refrigerant leak is handled slowly, serious health concerns will arise. Household members may feel nauseous or dizzy the longer the leak is untreated. To prevent physical health risks, homeowners are encouraged to call a professional when they notice unusual sounds or smells from the air conditioner.

Once temperatures begin rising, these sounds are more likely to occur. This is because the AC has not been used in several months and may need time to warm up. Annual maintenance will prevent problems from occurring during the hotter months, but it should be scheduled early. If there is an issue with the compressor, this can affect refrigerant levels when they are needed most. 

About Air Works Heating & Air

Air Works Heating & Air specializes in heating and cooling services in Wake Forest, NC. Its technicians have the tools and expertise to diagnose any cooling issue effectively and always offer detailed estimates and explanations before starting any work in the home. Call AirWorks Heating & Air today to learn more about its $40 off coupon for evaporator coil services.

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Five colorful refrigerant gas cylinders labeled R-410A, R-404A, R-22, R-407C, R-134A for HVAC services by Air Works.

Refrigerant Facts Every Household Needs To Know

What Homeowners Need to Know About Refrigerant

After a long day in the summer sun, Raleigh homeowners want to retreat to their cool, comfortable homes. If they walk in and their house is warmer than it should be, it can immediately cause fear and anxiety. Is the air conditioner broken? Is the thermostat malfunctioning? 

It can be an issue with the AC system’s refrigerant or coolant. Refrigerant, a substance in an air conditioner’s coils, is essential to cool a home to the desired temperature. It absorbs the heat and provides cool air to comfort the home. 

Homeowners need to understand the basics of refrigerants. They need to understand what type to use in their AC system, what causes leaks, and when to call an HVAC technician.

How to Tell Which Refrigerant an AC Uses

For an air conditioner to function properly, homeowners need to recharge the unit with the correct type of refrigerant. Many homeowners are not aware that there are numerous types of refrigerants. Using the right type is essential, as these are not interchangeable. Using the wrong variation can result in damage to the system.

Using the wrong refrigerant can result in leaks, corrosion, and damage to key components in an AC system. These can ultimately result in breakdowns or costly repairs. 

Property owners can determine the type of refrigerant their particular AC system requires by checking the label on the air conditioner. They can ask an AC technician for assistance if they cannot locate it. 

If the AC unit was built before 2010, it likely uses R-22 (freon). Freon has been banned in newer models, as it is dangerous to the environment. Technicians may recommend replacing the air conditioner with a model that doesn’t use R22 refrigerant.

What Causes Refrigerant Leaks?

Technician using pressure gauges on an air conditioning unit to diagnose refrigerant issues and potential leaks.

A common issue with an air conditioner is a refrigerant leak. These can be caused by numerous problems with an AC system, including: 

  • Damaged components:Over time, system components, such as coils, fittings, valves, or connections, can become damaged. Corrosion, vibrations, physical stress, or wear and tear can lead to small cracks, gaps, or holes, allowing refrigerants to escape.
  • Poor installation: Improper installation of an air conditioner can cause refrigerant leaks. Inadequate sealing of joints, incorrect tightening of fittings, or using incompatible materials can create leakage points. To avoid these problems, systems need to be installed by qualified professionals who adhere to industry standards.
  • Manufacturing defects:Occasionally, manufacturing defects in AC components can lead to refrigerant leaks. 
  • Vibrations and stress: Vibrations and mechanical stress can cause components to shift or loosen over time. This can lead to leaks.
  • Freeze-thaw cycles: If refrigerant lines are exposed to freezing temperatures, the expansion and contraction due to freeze-thaw cycles can cause joints or fittings to loosen or crack, leading to leaks.

Professionals can use refrigerant leak detectors to identify signs of a leak in a home and perform the necessary repairs.

When is it Time to Call a Professional?

Air conditioning unit with refrigerant tank and gauges, highlighting HVAC installation and maintenance concerns related to refrigerant leaks and system efficiency.

Property owners need to call HVAC technicians as soon as possible after noticing the signs of a refrigerant leak, frozen coil, or another issue. 

One of the most obvious symptoms is if a home is not cooling to the temperature setting on the thermostat. Without the right amount of refrigerant, AC systems cannot work properly. 

Other signs property owners should watch for include if the AC runs continuously without shutting down, if there are hissing or gurgling sounds coming from the system as refrigerant escapes through small holes, or if there is a formation of ice on the refrigerant lines, causing frozen AC coils. 

About Air Works Heating & Air

Since 2007, Air Works Heating & Air has provided heating and cooling services to the Raleigh area. They offer flat-rate pricing and 100% satisfaction guaranteed on every appointment. Call them today for HVAC services in Franklinton, NC.

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