One of the most common phone calls we receive at Air Legends starts with:
“My Coolbreeze is running, but it’s not blowing cold air.”
If your Coolbreeze evaporative air conditioner is operating but the house isn’t cooling properly, there are several common causes worth investigating.
The good news is that many cooling issues can be diagnosed and repaired without replacing the entire unit.
How A Coolbreeze Creates Cool Air
Unlike refrigerated air conditioning, evaporative cooling works by drawing warm outside air through wet filter pads.
As the air passes through the water-saturated pads, it cools naturally before being distributed throughout the home.
For this process to work correctly, your Coolbreeze requires:
• Clean filter pads
• Working water pump
• Functional solenoid valve
• Proper water distribution
• Correct airflow
If any of these systems fail, cooling performance can suffer.
Failed Water Pump
One of the most common Coolbreeze faults is a failed water pump.
The pump is responsible for circulating water over the filter pads.
When the pump stops working, homeowners often notice:
• The fan still runs
• Airflow feels normal
• Air is no longer cool
The system effectively becomes a large fan rather than an evaporative cooler.
Faulty Solenoid Valve
The water solenoid controls water entering the unit.
If the solenoid fails:
• Water may not enter the system
• Filter pads remain dry
• Cooling performance disappears
A faulty solenoid is one of the most common repairs we encounter on Coolbreeze systems.
Blocked Water Distribution System
Even if the pump and solenoid are working, water still needs to distribute evenly across all filter pads.
Problems may occur due to:
• Mineral scale
• Blocked spreaders
• Debris build-up
• Water distribution faults
Uneven water flow can significantly reduce cooling efficiency.
Worn Or Blocked Filter Pads
Filter pads play a critical role in cooling performance.
Over time they can become:
• Sludge filled
• Blocked
• Damaged
• Restricted by mineral scale
When this occurs, airflow and cooling performance suffer.
Most Coolbreeze filter pads typically last between 7 and 10 years depending on:
• Water quality
• Usage
• Maintenance history
Dirty Or Poorly Maintained System
A lack of servicing can gradually reduce performance over time.
Many homeowners don’t notice the decline until temperatures begin rising.
A neglected system may experience:
• Reduced airflow
• Poor cooling
• Increased water consumption
• Premature component failure
Regular servicing helps maintain optimum performance.
Controller Or Electrical Issues
Occasionally the problem is electrical rather than mechanical.
Potential faults include:
• Controller issues
• PCB failures
• MRU faults
• Wiring problems
These issues can affect system operation and cooling performance.
Incorrect Expectations During Humid Weather
Evaporative cooling performs best in Perth’s dry climate.
During periods of high humidity, cooling performance may naturally reduce.
This is normal and not necessarily a fault with the system.
Fortunately, Perth’s climate is generally ideal for evaporative cooling throughout most of summer.
Signs Your Coolbreeze Needs Attention
You should consider having the system inspected if:
• Air no longer feels cool
• Cooling performance has reduced noticeably
• Water consumption appears unusual
• The system has not been serviced recently
• Strange noises are present
• The unit struggles during hot weather
How Regular Servicing Helps
Many cooling problems can be identified before they become major faults.
Annual servicing allows technicians to inspect:
• Pumps
• Solenoids
• Drain valves
• Filter pads
• Controllers
• Water distribution systems
This helps maintain performance and reduce the risk of summer breakdowns.
Need Coolbreeze Repairs In Perth?
If your Coolbreeze is running but not cooling properly, Air Legends can help diagnose the fault and recommend the most cost-effective repair solution.
We provide Coolbreeze servicing and repairs throughout Perth and can help restore your evaporative cooling system before the next heatwave arrives.
Stay Scam Safe
Always use a licensed and insured contractor when servicing roof-mounted evaporative cooling systems. If in doubt, ask for licence details and proof of insurance before any work begins.
Contact Air Legends today to arrange a Coolbreeze inspection or repair.