The holidays should be a time when your house is filled with laughter, board games and family banter — not disturbing, creepy and alarming noises coming from your air conditioning system. If your AC system is making any of these noises, don’t hesitate to acknowledge them. These are the five sounds your AC should never make –– especially during the holidays when your friends and family are in town!
1. Hissing Noise or Bubbling Noise
If you hear a hissing or bubbling noise from your outside AC condenser unit, it may be a sign that you have a refrigerant leak. Refrigerant lines are the copper wires that run to the outside of your home beside the condenser unit — and refrigerant leaks happen where your system’s refrigerant line or evaporator coil are located.
Just like a Thanksgiving turkey on the dinner table, refrigerant is essential to your home. If you hear a bubbling noise, you will want to call for professional help. Refrigerant gasses are dangerous and can cause serious health problems.
Common Causes of an AC Refrigerant Leak
- Leaking Schrader Valve
- Rusted Heat Pump Accumulator
- Leaking Indoor/Outdoor AC or Heat Pump Coil
- Damaged Lines
- Rusted Filter Dryer
- Faulty Flare Connections
- Holes in a Capillary Tube
2. Buzzing Noise
A loud buzzing or vibrating noise shouldn’t be interrupting your Thanksgiving! If this noise is coming from your air conditioning system, it often means you have some type of electrical issue. Electrical issues can be dangerous and definitely need to be handled by a trusted HVAC technician.
Electrical Components That Cause Buzzing Noises:
- Circuit Breakers: Your AC can affect or shut off your circuit breaker if your system is using more amps than the breaker is designed to withstand.
- AC Condenser Fan Motor
3. Screaming Noise or Screeching Noise
The only screaming and screeching noise you should hear is Aunt Barb laughing and raving about your amazing turkey and sweet potato casserole. So if you happen to hear a screaming or screeching noise that isn’t Aunt Barb, it may be your air conditioning system. A screaming noise typically means the issue is coming from one of two places –– your fan motor or your compressor.
If the problem is in your fan motor, you will hear a screeching noise the entire time your AC is running. Your AC technician will need to replace the fan motor. If you hear the screeching noise only when your AC first kicks on, then the issue is most likely with your compressor. You will need to replace your compressor and sometimes it’s just easier to replace the entire unit. Consult with your technician and check your warranty before you replace the compressor or the entire system.
4. Thumping Noise or Banging Noise
While Thanksgiving may be filled with the kids running and jumping around with their family, if that thumping noise is coming from your AC you may need to be more worried.This sound means something is wrong with your blower assembly or motor. Motor mounts can come loose. Your blower may also be out of alignment. If the sound gets louder when your blower is running, turn off your system. This means something has disconnected or has broken. Call your trained HVAC technician, and don’t blame the kids on this one!
5. Clicking Noise
Is your air conditioning system making repeated clicking noises when your AC unit turns on and off? This could be a defective contactor or a relay from some other electrical control. Electrical issues should definitely be left to a professional.
Colman Heating & Air, Titusville’s Trusted AC Company
The holidays are no time for HVAC breakdowns. Don’t add stress to your Thanksgiving and holiday season by having a broken AC. If you need repairs or installations, please call Colman Heating & Air. We are passionate about keeping you comfortable and de-stressing your holidays!