While a little noise is expected when using your air conditioning unit, some sounds call for a closer inspection. Understanding more about the following noises ensures you can adequately explain the issues to an HVAC contractor when scheduling service. Being aware of them also allows you to take swift action before more serious problems develop. 

Why Is Your Air Conditioner Making Odd Noises? 

1. Hissing or Bubbling

Refrigerant allows your home to remain cool and comfortable, no matter how warm it is outside. The fluid flows through several AC components, including the evaporator coils. As it travels through the system, it absorbs moisture from the air inside the home and carries it to the outdoor condenser. 

If there's a hole in the evaporator coils or copper tubing, the refrigerant will leak out, which can cause a hissing sound since it's under so much pressure. You might notice a lack of cool air as the appliance loses this precious fluid. An HVAC repair specialist can replace the damaged components and replace the missing refrigerant for improved function and noise reduction. 

2. Clicking 

The cause of clicking depends on where the sound is coming from. If it's from the thermostat, the device could be on the brink of failure. In this case, it may need to be upgraded to a newer, more efficient model if there's an issue with the wiring. 

If you hear clicking in the outdoor condenser unit, a part may not be working properly. A dead capacitor, loose fan, or faulty contactor may prevent the system from functioning. Sometimes, the unit will click a few times before failing to start entirely, while other instances will emit a repetitive clicking sound as the system operates. A professional will be able to determine the exact cause to restore your home's quiet atmosphere. 

3. Banging or Clanking

When the air conditioner's moving parts become worn down over time, they can make contact with other components in the unit. For example, banging and clanking can indicate a bent fan blade, which continually hits another part as it rotates. 

The sound can also be caused by loosened bolts or screws. In either case, an HVAC contractor will assess the problem and tighten or replace components as needed. 

No matter what type of noise your unit is making,  R. Davis Mechanical will determine the cause and restore efficient and quiet operation. These technicians are available 24/7 to provide repairs and maintenance for faulty AC systems. Schedule an appointment with an HVAC contractor in Pittsburgh, PA, by calling (412) 370-0464. See a full list of their heating and cooling services by visiting the website.