Designing Heating and Cooling Systems in Large Buildings
About Me
Designing Heating and Cooling Systems in Large Buildings

Have you ever wondered what goes into a heating or air conditioning system for a large office building or another large building like a mall or a school? My name is Evelyn, and I am an HVAC architect. I design heating and air conditioning systems for large, corporate buildings. Making sure that a large building with many rooms or offices is efficiently heated and cooled is a very large job and is much more complicated than simply heating or cooling a home. This blog will educate the reader on how heating and cooling jobs this large are designed and completed.


Designing Heating and Cooling Systems in Large Buildings

Troubleshooting Weird AC Noises: A Guide

Nicole Jacobs

Air conditioning systems are the unsung heroes of many homes, providing a cool and comfortable haven, especially during the hot summer months. However, when your AC starts making strange noises, it can be a sign of potential problems. This blog post will guide you through troubleshooting those weird AC noises.

What Are These Noises?

Different noises can signal various issues with your air conditioning unit. Here's a rundown of some common sounds and what they might mean:

Buzzing: This could indicate loose parts, debris in either the indoor or outdoor unit, refrigerant leaks, or dirty condenser coils.

Humming: While not typically a serious problem, humming could signify loose parts or electrical issues.

Clicking: Clicking sounds when the AC starts and stops are normal. But constant clicking could mean a failing thermostat or a defective control.

Squealing: This noise often comes from the blower motor and could mean that the belt needs replacement or the motor requires lubrication.

Rattling: This sound can suggest loose parts, clogged filters, or failing motors.

Hissing: A hissing sound usually means there's a refrigerant leak. This is a serious issue and needs immediate attention.

Troubleshooting Tips

Check for Loose Parts: Start by checking for any loose screws or bolts in the unit. Tighten them if necessary. If the noise persists, it could be a sign of loose internal components, in which case you should consider hiring a professional.

Clean Your AC Unit: Sometimes, debris like leaves or twigs can get into your outdoor unit and cause a rattling noise. Regularly cleaning and maintaining your AC can help prevent this. Also, remember to replace or clean your AC filters as per the manufacturer's instructions.

Examine the Condenser Coil: A buzzing noise might indicate a dirty condenser coil. Try cleaning it and see if the noise stops. If it doesn't, the coil might need replacing.

Listen to the Blower Motor: If you hear a squealing noise, it could be the blower motor belt. Turn off your AC and check the belt. If it looks worn out, you'll need to replace it.

Check the Refrigerant: A hissing noise usually indicates a refrigerant leak. This isn't something you can fix on your own, so you'll need to call a professional.

When to Call a Professional

While you can handle minor issues like cleaning or tightening loose parts, some problems require professional help. If your AC is making a hissing sound, constantly clicking, or if the noises persist despite your troubleshooting efforts, it's time to call an HVAC professional. They can diagnose and fix the issue, helping to extend your AC's lifespan and ensure it runs efficiently.

In conclusion, weird noises from your AC shouldn't be ignored. They're usually your system's way of telling you something's wrong. By learning what these sounds mean and how to troubleshoot them, you can keep your AC running smoothly and maintain a comfortable home environment. And remember: when in doubt, always consult an air conditioning repair professional.