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Common Evaporative Cooler Problems And How to Fix Them

Evaporative coolers are the best way to beat the extreme level of weather in Australia. Evaporative coolers also referred to as “swamp coolers” are considered energy-efficient and well experienced to create a comfortable environment. Most likely any other appliance also faces malfunctioning.

The problems encountered in swamp coolers are predictable and easy to identify. This blog will give you the right amount of information about malfunctioning cases, leading you to know which part to look at when you experience operational issues. 

Presenting some common evaporative cooler issues along with the methods to fix them in order to ensure the smooth running of your cooler.

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1. Inadequate Cooling:

In case your evaporative cooler fails to cool your space as it is supposed to then the most predictable factors can possibly be insufficient airflow, low humidity levels, or dirty cooling pads.


– Ensure proper airflow while making sure doors and windows are partially open to allow the passage of air exchange.

Timely checking and cleaning the cooling pads as delay in it can result in clogging with debris that needs regular maintenance.

– Maintain proper humidity levels for efficient cooling as Evaporative coolers work best in dry, arid conditions. If your area is too humid, then the cooling effect could be limited.

2. Unpleasant Odors

Mold growth or bacterial clogging on cooling pads or in the water reservoir can emanate foul odors from the cooler. If it smells like fish water, it means that the water pan has not been cleaned in a while. The water can also grow stagnant when there is no room for evaporation.


Ensure regular cleaning and disinfect the water reservoir with chlorine.

– Change the cooling pads if they are moldy or have a strong odor.

Prefer using cooler cleaning tablets or a vinegar-water solution to eliminate such unpleasant smells.

3. Water Leakage

Water leaks are a common issue faced at times when water lines are damaged, a clogged water distribution system, or an unlevel unit.


Replace if the water lines are damaged or check to clean if there may be blockages.

– Ensure the unit is level to prevent water from overflowing.

– Inspect the water pump for cases like a loose connection or a worn-out pump.

4. Noisy Operation

Swamp coolers can produce excessive noise that can be disruptive to your peace and comfort.


Investigate for any loose components and tighten them, such as fan blades or motor mounts.

Apply lubrication at moving parts like bearings and pulleys to minimize friction and noise.

– Inspect the blower wheel for debris that can generate vibrations.

5. Inefficient Water Usage

If your evaporative cooler is consuming excessive water, it is generally due to a malfunctioning float valve, a leaky water line, or an extremely high water flow rate.


Maintain the correct water level by adjusting the float valve

Repair or replace damaged components.

Adjust the water flow rate to a level that provides adequate cooling without excessive water consumption.

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Evaporative coolers are cost-effective and environmentally friendly, but like all appliances, they require regular maintenance to operate effectively. Addressing common problems and following the solutions outlined in this blog will help you to keep your evaporative cooler running smoothly and enjoy a comfortable indoor environment during hot weather. Remember that safety should always come first, so if you encounter more complex issues, it’s best to seek guidance from professionals at DGB Refrigeration Heating & Cooling. In case if you are looking for a quote for the supply and installation of brand-new evaporative coolers, getting your existing evaporative cooler serviced or repaired, or even getting new filter pads installed for your evaporative coolers, we can help.

Grab your phone and dial 03 7038 6918 for a noobligation quote from the best technicians in Melbourne at DGB Refrigeration Heating & Cooling.


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