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Don’t Lose Your Cool if AC Isn’t Working

how to recharge a central air unit

Updated 7/24/2024

Did you know you can recharge your central air unit?  

 

Now is the time Floridians rely on their air-conditioning systems to conquer the effects of the never-ending heat and humidity. But what happens when the AC suddenly stops producing cold air? Don’t panic — your central air conditioning most likely needs to be recharged.  

 

Air conditioners cannot faultlessly run for their entire lifespan. Generally, your central air conditioner  data-contrast=”none”>shouldn’t need refrigerant added, but refrigerant leaks happen and might need to be recharged. See how AC units use refrigerant and what to do next if you think your system is low. Here are the top signs that your central air conditioning needs recharging: 

 

Understanding AC Refrigerant

Before diving into the specifics of AC recharging, it’s crucial to understand the role of refrigerant in your air conditioning system.

What is Refrigerant?

Refrigerant is a chemical compound that circulates through your AC system, absorbing heat from inside your home and releasing it outside. This process, known as the refrigeration cycle, is what allows your AC to cool your home effectively.

Types of Refrigerant

Two main types of refrigerant are commonly used in residential AC systems:

  1. R-22 (Freon): This was the standard refrigerant for decades but has been phased out due to its harmful effects on the ozone layer.
  2. R-410A (Puron): A more eco-friendly alternative that has been used in newer AC units since 2010.

The Myth of Refrigerant Depletion

It’s important to note that refrigerant does not get “used up” like fuel in a car. In a properly functioning AC system, the refrigerant should circulate indefinitely. If your system is low on refrigerant, it typically indicates a leak that needs to be addressed.

Signs Your AC Needs Recharging

Recognizing the signs that your AC needs recharging can help you address the issue promptly, potentially saving you from more extensive repairs down the line. Here are the top indicators to watch for:

  1. AC Running Constantly but Not Cooling
    • Your system runs non-stop but fails to reach the desired temperature
    • You notice uneven cooling throughout your home
  2. Warm Air from Vents
    • Place your hand in front of a vent; if the air feels warm, it could indicate low refrigerant
    • Compare the air temperature to your thermostat setting
  3. Higher Than Normal Electric Bills
    • A sudden spike in energy costs without a corresponding increase in usage
    • Your AC system working harder to compensate for low refrigerant levels
  4. Ice Buildup on Refrigerant Line
    • Visible frost or ice on the copper lines connecting the indoor and outdoor units
    • Ice formation on the evaporator coil inside the indoor unit
  5. Hissing or Bubbling Sounds
    • Unusual noises coming from the refrigerant lines
    • These sounds can indicate a refrigerant leak in progress
  6. Poor Humidity Control
    • Your home feels more humid than usual
    • Condensation or water stains on walls or ceilings
  7. Longer Cooling Cycles
    • Your AC takes longer than usual to cool your home
    • The system runs for extended periods without reaching the set temperature

Causes of Refrigerant Leaks

Understanding why refrigerant leaks occur can help you prevent future issues and maintain your AC system more effectively. Common causes AC units fail include:

  • Worn Gaskets: Over time, the seals and gaskets in your AC system can deteriorate, allowing refrigerant to escape.
  • Faulty Connections: Loose or improperly sealed connections between components can lead to leaks.
  • Damaged Piping: Corrosion, physical damage, or manufacturing defects in the refrigerant lines can cause leaks.
  • Vibration: Constant vibration from the compressor unit can cause connections to loosen over time.
  • Age of the System: Older AC units are more prone to developing leaks due to general wear and tear.
  • Poor Installation: Improper installation can lead to stress on components and eventual leaks.

Pro Tip: Check your thermostat’s batteries!  

A broken thermostat does not necessarily mean that you need a recharge. When in doubt, it is best to call a professional from Frank Gay Services. We’ll check your components and look for signs of leaks. Contact our local pros at   (407) 329-9808 .

The Dangers of DIY Refrigerant Handling

While it might be tempting to attempt a DIY recharge, handling refrigerants without proper training and equipment can be extremely dangerous. Here’s why:

  • Health Risks: Direct contact with refrigerants can cause severe frostbite or chemical burns.
  • Environmental Hazards: Improper handling can release harmful gases into the atmosphere, contributing to ozone depletion.
  • Legal Issues: It’s illegal for non-certified individuals to purchase or handle refrigerants in many jurisdictions.
  • System Damage: Overcharging or using the wrong type of refrigerant can cause serious damage to your AC system.

Always consult a certified HVAC technician for any tasks involving refrigerant.

The Recharging Process

When you call a professional to recharge your AC, here’s what you can expect:

  1. Leak Detection: The technician will first locate and repair any refrigerant leaks.
  2. System Evacuation: Any remaining refrigerant will be safely removed from the system.
  3. Vacuum Test: The system is placed under vacuum to remove moisture and test for leaks.
  4. Recharging: The correct amount of refrigerant is added to the system.
  5. Performance Test: The technician will run the system to ensure it’s operating correctly.

Costs Associated with AC Recharging

The cost of recharging your AC can vary widely depending on several factors:

  • Type of Refrigerant: R-22 is significantly more expensive than R-410A due to its phaseout.
  • Quantity Needed: Larger systems or those with significant leaks will require more refrigerant.
  • Technician Labor: Rates can vary based on your location and the complexity of the job.
  • Additional Repairs: If leaks or other issues are found, this will increase the overall cost.
  • F-gas Tax: In some regions, there may be additional taxes on fluorinated greenhouse gases used as refrigerants.

On average, you can expect to pay between $200 to $600 for a standard AC recharge, with costs potentially rising to $1,000 or more for complex situations or if using R-22 refrigerant.

Preventative Maintenance Tips

To avoid frequent recharging and maintain your AC’s efficiency:

  • Schedule annual maintenance checks with a certified HVAC technician.
  • Keep the area around your outdoor unit clear of debris.
  • Regularly clean or replace air filters.
  • Monitor your energy bills for unexpected increases.
  • Pay attention to unusual sounds or smells coming from your AC system.
  • Ensure proper insulation on refrigerant lines to prevent condensation and ice buildup.

When to Call a Professional

While some AC maintenance tasks can be performed by homeowners, certain situations always require professional attention:

  • Any suspected refrigerant leaks
  • Ice formation on the evaporator coil or refrigerant lines
  • Unusual noises coming from the compressor unit
  • Persistent cooling issues despite basic troubleshooting
  • Annual maintenance and inspections

Remember, a well-maintained AC system not only keeps you cool but also operates more efficiently, saving you money on energy bills and preventing costly repairs.

Stay Cool with Frank Gay Services  

Understanding the signs of low refrigerant and the importance of proper AC maintenance can help you stay cool and comfortable all summer long. By recognizing when your system needs attention and trusting certified professionals to handle refrigerant-related tasks, you can ensure your AC operates efficiently and reliably for years to come.

If you’re experiencing any of the signs mentioned in this guide, don’t hesitate to contact a reputable HVAC service provider. They can diagnose the issue, safely recharge your system if necessary, and perform any needed repairs to keep your home cool and comfortable.

Stay cool, stay informed, and remember that when it comes to AC recharging, leaving it to the professionals is always the safest and most effective choice.

Call the pros at Frank Gay Services! We can tune-up, service, repair, and recharge your HVAC system so you stay cool and can get back to enjoying your summer.  

 

We serve the Greater Orlando area. Call us today to schedule an appointment and we will be there right away —   (407) 329-9808 . 

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