Why Does My Evaporative Cooler Make Noise?
Is your evaporative cooling making noise?
If your unit starts making unusual noises, it can be both annoying and a sign that something is wrong. Understanding the possible causes of these noises can help you address the issue early before it leads to further damage.
At Unitests, we specialise in diagnosing and repairing evaporative coolers to ensure they operate efficiently and quietly. Let’s explore some of the most common reasons why your evaporative cooler might be making noise and what you should do about it.
Common Reasons for Evaporative Cooler Noises
Loose or Worn-Out Fan Belt: If you hear a squeaking or screeching noise, the fan belt could be the culprit. Over time, fan belts can wear out, become loose, or even crack, leading to excessive noise when the unit is running. Replacing the fan belt is a simple fix that can significantly reduce noise levels.
Faulty or Failing Motor: A humming or buzzing sound could indicate that the cooler's motor is struggling. Motors can overheat, wear down, or accumulate dust and debris, leading to operational noise. In some cases, a simple cleaning or lubrication may fix the issue, but if the motor is damaged, professional servicing is required.
Worn-Out Bearings: If you notice a grinding or rattling noise, worn-out bearings in the fan or motor assembly could be the problem. Bearings help the fan spin smoothly, but when they wear down, they can cause friction, leading to loud noises. Replacing the bearings can restore the smooth operation of your unit.
Loose or Unbalanced Fan Blades: An evaporative cooler uses fan blades to circulate air throughout your home. If these blades are loose, bent, or unbalanced, they may produce a rattling or thumping sound. This issue can usually be resolved by adjusting or replacing the blades.
Blocked or Dirty Pads: Evaporative cooling pads are responsible for absorbing and distributing water throughout the unit. If they become clogged with dirt, mold, or debris, airflow can be restricted, causing the unit to work harder and produce unusual noises. Cleaning or replacing the pads regularly helps maintain smooth operation.
Water Pump Issues: The water pump circulates water through the cooling pads, and if it malfunctions, it can create a gurgling or clicking noise. A failing pump may need cleaning, repair, or complete replacement to keep the system functioning properly.
Loose Screws or Panels: Over time, the screws and panels on your evaporative cooler can become loose due to vibrations. If you hear a rattling or vibrating noise, inspecting and tightening any loose components can often solve the problem.
How to Fix Noisy Evaporative Cooling Units?
A noisy evaporative cooler can be a sign of a minor issue or a more serious problem that requires professional attention. At Unitests, our experienced technicians can diagnose and repair any faults, ensuring your cooling system operates efficiently and quietly.
We can perform to:
Check for Loose Components – Inspect the fan belt, screws, and panels to ensure everything is securely fastened.
Clean the Cooling Pads – Remove and clean the pads or replace them if they are excessively dirty or worn out.
Lubricate the Bearings – Some bearings require lubrication to function smoothly. Applying the right lubricant can reduce noise.
Inspect the Water Pump – Ensure the water pump is working correctly and free from blockages.
Call Unitests today today to schedule a service and keep your cooling system running smoothly!