If noises from the outside AC unit are driving you crazy, now is the time to find out what the sounds mean and how to repair them before damage occurs. Any sound coming from the unit suggests a problem. Do not ignore these odd, unusual noises.
Most obvious signs an outside AC makes include:
- Banging
- Screeching
- Popping
- Buzzing
- Hissing
When you are ready to stop the animal-like sounds coming from your outside AC unit, the following information can help.
Banging Noises
Banging noises usually have one of two culprits: either the compressor support has worn out or the condenser fan is knocking against the unit. The latter occurs when parts of the fan are knocked loose and bang on the outdoor unit.
Screeching Noises
Screeching noises sound like metal grinding against metal. It’s usually caused by a faulty condenser fan motor or a broken compressor. Both issues can easily be repaired by a qualified professional.
Popping Noise
Turn off the AC unit immediately if you hear popping noises coming from the outside unit. This noise often sounds like popcorn popping and usually means the compressor is sucking up liquid refrigerant on the intake side of the unit. Call an HVAC pro immediately if you suspect this issue.
Buzzing Noise
A buzzing noise usually indicates an issue within the electrical system. Frayed or loose wires, faulty motors, and broken compressors can cause a buzzing noise to occur.
Hissing Noises
Hissing noises coming from the outdoor unit are most often the result of leaking refrigerant. This odd noise is one of many signs that suggest a leak. Other signs include:
- Higher than normal energy bill
- Ice on the outside refrigerant lines
- Chemical smells near the refrigerant lines
Protect the HVAC system at your home by reaching out to a professional contractor if the sounds above come from your outdoor unit. The sooner you make the call, the less damage and expense you’ll incur.
Absolute Air offers a wide array of services, including, but not limited to, AC installation, AC repair, heating installation, heating repair, metal fabrication (for all types of ductwork), refrigeration, and gas line installation. Our trained team of technicians can also service and work on equipment brands such as American Standard, Train, Carrier, York, Goodman, Rudd, and Mitsubishi, to name a few. If you have a service request not mentioned here, give us a call.
