Signs That Indicate Your Air Conditioner Is Low on Refrigerant


How do I know if my air conditioner needs refrigerant? We get this question from homeowners a lot, especially before and during the summer. See, you don’t need more refrigerant to keep your air conditioners working like gas in a car. So, you’ll need more refrigerants only when there is a leak somewhere. To know that sure, you’ll need an HVAC technician to get it checked and measure the amount of refrigerant in your air conditioner. However, there are some signs that indicate you’ll ac is low on refrigerant. Here are those indicators:-

High Energy Bills

While there are several reasons why you are getting high energy bills, sometimes, low refrigerant can be one of the reasons. Since your air conditioner runs all day to keep your room cool, you are probably racking up huge electricity bills. Your AC blows warm air over an evaporator coil, indicating full of refrigerant. Then, the refrigerant picks up that heat from the air and carries that heat outside where it’s dumped. If there’s not enough refrigerant liquid in your air conditioner, AC can’t get rid of as much heat per cooling cycling. This means that your system will need to run for a long time and work harder to cool your house. When it works for long hours, you could expect high energy bills. Annual air conditioning service Sydney can help you avoid such problems.

Warm Air Blowing From Supply Vents

If the refrigerant levels are too low, your air conditioner can’t absorb enough heat per cycle, and you will notice warm air blowing from the supply vents. Before calling a professional and recharge your system, we would recommend you to replace the air filters. This is because sometimes clogged air filters fail to cool the air effectively. If you have replaced the filters and notice that your AC is still blowing hot air, then probably it is due to low refrigerant levels and should call in a professional HVAC technician.

Ice on Your AC

If you notice ice or frost anywhere on your air conditioner, it could be a sign that indicates refrigerant levels are too low. This is because low refrigerant levels can cause the temperature of the refrigerant to drop below normal design temperature. As a result, this will cause ice to build on the evaporator coil and refrigerant lines.

Hissing or Bubbling Noise

If you are hearing hissing noise coming from your air conditioner’s outdoor unit, the chances are it’s the refrigerant escaping out through a leak. Never ignore air conditioning repairs Sydney, as it can lead to major problems that can cost you more.

Whether you want to service your air conditioner or need help in air conditioning installation Sydney, give us a call today to schedule an appointment.

The author is a professional HVAC technician. Along with a team of professionals, he provides air conditioning service and air conditioning installation Sydney. Visit for more details.

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