Odd noises coming from an air conditioner usually represent a problem with the system, leaving you wondering, “Why is my AC making a hissing noise?” Homeowners experiencing this phenomenon need AC repair services in Mansfield, NJ. DIYers should never attempt to fix air conditioners on their own, especially if there’s a refrigerant leak.
Learn more about the causes of hissing noises from a cooling system and how repair professionals go about fixing them.
Refrigerant Leaks Can Make a Hissing Noise in Your Air Conditioner in Mansfield, NJ
A refrigerant leak is the most common reason for a hissing noise from an air conditioner. If you have a refrigerant vapor leak, it usually originates from the compressor in the outdoor unit. If you hear the noise at the same time your vents are blowing warm air or you see frost or ice buildup on the coils, a leak is probably to blame.
The refrigerant is under constant pressure inside the coils. Even a tiny hole in the condenser coil could allow the pressurized refrigerant to escape. Loose seams or connectors can also be the source of a leak.
In Mansfield, NJ, only licensed HVAC professionals are permitted to add refrigerant to an air conditioning system in accordance with handling regulations set by the Environmental Protection Agency (EPA).
Air Leaking From the Ducts May Cause Hissing Sounds
What about a hissing noise that seems to come from the ductwork? In that case, gaps or loose seams in the ducts may be allowing air to escape. As the ducts age, the normal expansion and contraction of the metal caused by temperature changes can loosen the seams.
As a homeowner, it’s difficult to find leaks in ducts that are hidden behind walls and ceilings. An HVAC professional can inspect the vents for you. If the technician identifies gaps, using a duct sealant product can help correct the issue. Otherwise, you might need sections of ducts replaced.
You might have an airflow restriction because you’ve shut the supply vents or have boxes blocking the return vents. When air cannot properly move through the system, it may escape through any gaps in the vents, causing a hissing sound.
A Failing Compressor May Cause a Hiss or Screech
A compressor malfunction can lead to a noisy air conditioner. It may be creating too much pressure for the refrigerant, resulting in a hissing or screeching noise that can last 10 seconds or more. The cooling system may turn on and off frequently in a process known as short cycling.
If you have a failing compressor, you’ll need major repairs or an air conditioner replacement. Homeowners cannot do this work themselves in Mansfield, NJ. Major repairs and installations require a permit from the Mansfield Township Zoning Office. When you hire licensed HVAC professionals to do the work, they will handle obtaining any necessary permits.
Brief Hissing Sounds Might Not Be Problematic
So, why is your AC making a hissing noise for a few seconds each time it starts running? A brief hissing noise that only occurs when the system turns on could be some leftover refrigerant in the expansion valve. This is part of the normal operation for the cooling system.
Even if you believe the noise relates to the expansion valve, you can call for service from an air conditioning technician. An inspection of the system can determine exactly what is happening. It’s better to be sure about the source of the noise than to constantly worry about it.
If the hissing noise relates to something other than the expansion valve, it could cause a major problem in the near future. Mansfield, NJ, has a humid subtropical climate with hot summers. High temperatures routinely reach the 80s and 90s from June through early September in central New Jersey. You rely on your cooling system throughout the season, so the last thing you want is an unexpected breakdown that leaves you sweltering in your own home.
Dustin’s Plumbing Heating and A/C Repair Quickly Tracks Down Your Air Conditioner’s Hissing Noise in Mansfield, NJ
Why is your AC making a hissing noise, and does it need immediate repair? Odd noises from the air conditioner could represent major problems that require an AC inspection right away. Our professionals at Dustin’s Plumbing Heating and A/C Repair will give you prompt service at an affordable price.
To learn more or to set up a service visit, call us today. We serve the entire Mansfield, NJ, region with honor and pride.
