Chiller Not CoolingUpdated 10 days ago
If your chiller is running but the water is not getting cold, this guide will help you understand the most common causes and the steps you can take to fix the issue. Cooling problems are usually caused by simple issues such as low water flow, poor ventilation, or incorrect setup.
This guide walks you through each possible cause so you can get your chiller working properly again.
1. Check Water Flow
Your chiller cannot cool properly without strong and steady water flow.
Weak flow is the most common reason for poor cooling.
Make sure
The filter is clean
The filter is not clogged or worn out
The hoses are fully connected and tightened
The hoses are not bent, twisted, or kinked
Water is circulating continuously
If you notice weak flow, rinse the filter and check the hoses for air pockets or blockages.
2. Clean or Replace the Filter
A dirty filter restricts circulation and prevents the chiller from cooling the water efficiently.
Replace or rinse the filter if
the water looks cloudy
the filter is discolored
flow feels slower than usual
the filter has been used for several weeks
Strong water flow is important for consistent cooling.
3. Check the Ambient Temperature
Chillers work best in cooler environments. If the room is warm, the chiller needs more effort to cool the water.
Cooling performance drops when
the chiller is in a hot garage
the unit is exposed to direct sunlight
the room temperature is high
For best cooling, place the chiller in a cool indoor area with good airflow.
4. Improve Ventilation Around the Chiller
The chiller releases warm air from the cooling process. If this warm air has nowhere to go, the chiller cannot cool effectively.
Make sure
the vents are not blocked
there is open space on all sides of the chiller
the chiller is not inside a cabinet or tight corner
Good ventilation improves cooling speed significantly.
5. Keep the Lid Closed During Cooling
If the tub lid is open, warm air enters the water continuously, making cooling much slower.
Always keep the lid fully closed when cooling the water.
6. Check for Air Trapped in the Hoses
Air bubbles inside the hoses can affect water flow and reduce cooling.
This can happen after refilling the tub or reconnecting the hoses.
To fix this
lift or adjust the hoses to release trapped air
make sure the water is circulating smoothly
check for gurgling or uneven flow, which indicates air pockets
Once the air is removed, cooling usually improves.
7. Confirm the Temperature Setting
Make sure the target temperature on your controller is set correctly.
If the set temperature is higher than the current water temperature, the chiller will not activate cooling.
Double check that you selected the correct mode and temperature.
8. Avoid Overfilling the Tub
If the water level is too high, the chiller will need more time to cool the larger volume of water.
Fill the tub only to the recommended water level.
9. Give the Chiller Enough Time
Cooling speed depends on
water volume
room temperature
chiller size
Larger tubs take longer to cool. If you recently refilled the tub with warm tap water, it may take additional time to reach your target temperature.
10. Reset the Chiller
If none of the steps above help, try a basic reset.
To reset
Turn off the chiller
Unplug it
Wait one to two minutes
Plug it back in
Turn it on again
A reset can help clear minor glitches.
11. Check for Leaks or Low Water in the System
Leaks or low water levels can reduce flow or interrupt cooling.
Inspect
hose connections
intake fittings
the filter housing
the water level in the tub
Add water if the tub is below the required level.
12. When to Contact Support
If the water is still not cooling after following all the steps above, the issue may require technical help.
Contact support if
the chiller turns on but never cools
the compressor does not activate
the chiller makes unusual noises
you suspect internal damage
cooling has become consistently weaker over time
Support can help check internal components or guide you through advanced troubleshooting.
Summary
A chiller that is not cooling is usually caused by
weak water flow
a clogged filter
poor ventilation
warm room temperature
trapped air in the hoses
incorrect settings
By checking each of these steps, most cooling problems can be resolved quickly. Proper setup, strong water flow, and clean filters are the key to keeping your chiller performing at its best.
Contact Support
If you still need help after following the steps above, our team is here to assist you.
Email: [email protected]
Phone: (386) 388-6867
We are happy to help with troubleshooting, replacement parts, or any questions about your cold plunge system.