Tips for Fixing Noisy Air Conditioner Units · Rainforest Plumbing and Air

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Tips for Fixing Noisy Air Conditioner Units

Posted by Ryan Forest

Your air conditioner unit works overtime during the summer months in Arizona which can put a toll on your unit. If your HVAC unit has been constantly running and making weird noises, know what to do and when to call one of our reliable technicians. 

HVAC Units

Luckily, newer HVAC units are quieter, but sometimes noises sneak in and unusual noises usually mean that something is wrong.

The first thing to do is to identify the source. Noisy air conditioner units can be caused by dirty coils, clogged air filters, leaks, faulty controls, and more.  

Clicks, Clanks, and Bangs

If your unit is making clicking, clanking, or banging noises, it could mean there is a loose part or the compressor needs replaced. It could also be caused by a loose fan blade making everything out of balance and hitting other parts of the unit. 

A defective thermostat or issues with electrical parts can also cause these noises and should be addressed immediately.

This will only worsen if not fixed. Keep in mind, it is sometimes normal for your unit to make noises during start-up and shut down, but if the noises continue, it could be a bigger issue.


Whistling noises from your unit usually mean a clogged filter, a leaky duct, or issues with the fan motor speed. 

Even though it is an annoying noise, it isn’t usually caused by an emergency issue that needs to be taken care of right away.

Rattles and Squeals

Rattles and squeals are common noises that come from an air conditioner unit.

These noises usually mean there are malfunctions with the blower or that the fan motors need to be replaced. Again, this might be common during start-up, but should not continue. If it does, have your unit inspected.

Buzzing and Humming

HVAC units making buzzing and humming sounds are common and could be caused by many reasons including:

– loose parts

– debris in unit blowing around

– loose fan motor

– dirty condenser coil

– Leaks

– dirty air filter

Preventative Maintenance with Rainforest Plumbing and Air 

To prevent your unit from making these noises Rainforest Plumbing and Air offers year-round preventative maintenance. 

Our experienced technicians know what to look for and have the right equipment to conduct a thorough inspection of your HVAC unit. They also have the knowledge to suggest to either repair or replace your unit when needed. 

During our preventative maintenance check, we will check your entire HVAC systems like the refringent levels, electrical connectors, and wiring. We will also look for damaged pipes or any other issues causing energy to be lost. 

Rainforest Plumbing and Air has been serving Phoenix and surrounding areas in Arizona for over 20 years. Our technicians take preventative maintenance seriously and will put you on a schedule to ensure that your HVAC units in Chandler and around the valley of the sun are working effectively and efficiently, saving you time and money.