Are you ready to explore the ultimate guide to choosing the best aquarium chillers?
Are you considering purchasing an aquarium cooler but not sure which one is right for your needs? Look no further! This comprehensive guide will help you choose the best option to keep your aquarium friends strong and healthy. From learning how to identify when it’s time to buy an aquarium chiller, to finding the best cooler for your tank size. Ready to create a cooler pool environment and a healthier fish tank?
So, let’s dive deep into the world of aquarium chillers and learn everything you need to know.


The Ultimate Guide to Choose the Best Aquarium Chillers


1. What Is the Aquarium Chiller?

An aquarium chiller is a piece of equipment that lowers the temperature of aquarium water. Pumping water through the chiller removes heat from the system before returning it to the aquarium. The core function of an aquarium chiller is to remove excess heat from the fish tank, ensuring the water stays at the desired temperature.

Aquarium chillers are most often used in the summer months to keep aquarium inhabitants comfortable and healthy. However, chillers are extremely useful when it comes to reducing heat generated by pumps and lights. With Lando aquarium chillers, you can rest assured that you are getting the quietest chiller on the market. Various sizes are available to fit your saltwater tank or mini aquarium.

Whether you’re looking for a compact and portable aquarium chiller to use at home or a commercial-grade cooler for a larger aquarium. Lando Aquarium Chillers has you covered.


Aquarium Chillers


2. How Does the Aquarium Chiller Work?

Aquarium chillers, also known as chiller aquarium or fish tank chillers, are a must-have for all fish enthusiasts. But have you ever wondered how the aquarium chillers work?

It’s actually quite simple. The aquarium chiller is a very small device that works like a fridge to cool your aquarium. can also be called an aquarium cooling machine and aquarium chiller unit. The aquarium chiller is composed of a Compressor, evaporator, condenser, temperature control system, temperature sensor, an inlet, and outlet port.

Aquarium chillers use a compressor to cool the water that circulates through the aquarium, similar to the way an air conditioner cools a room. The water is first pumped into the cooler and then through an evaporator where it absorbs heat through a refrigerant coil. The cooled water flows back into the aquarium, creating a comfortable and safe environment for your aquatic pets.

If the temperature of the aquarium reaches the set value of the controller during work, the chiller will stop working. and restart working once the temperature is higher or lower than the set value of temperature.

The more equipment you have running in your aquarium, the greater your need for an aquarium chiller will be. This aquarium chiller unit creates a comfortable environment for your fish.


3. Types of Aquarium Water Chillers You Need to Know

Drop-In Chillers: Directly placed in the sump or filter.

  • It consists of a coil that is placed in the sump of the aquarium
  • The coil is made of titanium metal.
  • Different sizes range from 1/13 HP to 5HP.
  • No plumbing is required for installation,
  • Fit for limited space

Inline Chillers: Positioned externally, they cool water that’s pumped through them.

  • Suitable for large systems with in-line chillers.
  • Require plumbing to fit into an in-line filtrations system.
  • The cooling water is taken into the aquarium through the pump.
  • In-line chillers come in different sizes. (from 1/13HP to 15 HP)
  • It is also the most common type in the market.

Thermoelectric Chillers: Utilize the Peltier effect for cooling, making them ideal for smaller tanks.

  • Ideal for use with mini saltwater and freshwater aquariums
  • Only use them for aquariums of up to 55 gallons
  • It is not effective when used with a fast water flow in aquariums
  • Have the advantage of being very quiet.


Lando Aquarium Chillers

4. What Size Aquarium Chiller Do I Need?

If you choose an aquarium chiller, you should consider more than the amount of water your aquarium holds. You should also consider what your aquarium’s temperature drop should be and the air temperature around it. Compared to a chiller that has to cool the water by 15-20°F, one that drops the water by 5-8°F uses less power. Furthermore, warmer ambient temperatures (above +/- 75° F) around the chiller will reduce its cooling performance.

We can use a simple calculation or general rule to estimate how much energy will be required to reach the desired temperatures in our tanks using BTU – British Thermal Units. A chiller’s BTU/hr rating indicates how much heat energy it can remove per hour (BTU). Assume the chiller is placed somewhere with reasonable air temperatures around 70°F without additional sources of heat when using this formula.

How to find the BTU/hr rating of your chiller?

Multiply your tank size in gallons by 8.3. (A gallon of water weighs about 8.3 pounds), Then multiply by the number of degrees you need to drop.

(Volume of water x 8.3) x #° temperature drop = proper BTU/hr rating

For example, in a 75-gallon aquarium, a drop of 4° is needed to achieve the proper temperature range of 78°.

622.5 BTU/hr x 4° drop in temperature = a chiller rated for at least 2490 BTU/hr

When calculating the size of the chiller, it is always better to slightly increase it rather than undersize it, as an undersized chiller will run much less efficiently.

Below is a table of sample fixes for Lando aquarium chiller sizes. This is just for example purposes. Of course, sizes and capacities may vary depending on the unit.


Aquarium Chiller

5. Why Do You Need to Use An Aquarium Water Chiller?

Improving the living environment of organisms such as fish, axolotl, coral, jellyfish, etc., can greatly enhance their happiness. The operation of an aquarium chiller is automated, allowing you to effortlessly set the desired temperature for a convenient and comfortable environment.

Not only does it improve work efficiency and save costs, but aquarium chillers are also digitized, ensuring precise temperature control and reducing fish mortality. By maintaining the right temperature, aquarium chillers contribute to the overall well-being of the fish.

In addition to its beneficial impact on fish health, aquarium chillers promote energy conservation and resource efficiency through continuous water cooling. By adopting this eco-friendly approach, we can contribute to protecting the environment while reducing costs.


6. How Do I Choose An Aquarium Chiller?

When it comes to keeping your aquarium inhabitants healthy and thriving, an aquarium chiller can be a critical tool in your arsenal. But with so many options on the market, it can be tough to determine which is the best fit for your tank. Choosing an aquarium chiller is all about analyzing your tank’s unique needs and selecting a chiller that is powerful enough to handle your cooling needs while remaining energy-efficient. Some common factors to consider include the size of your tank, the temperature of your room, and the heat generated by your lighting and other equipment. With a little research and attention to detail, you can find the perfect aquarium chiller for your setup and enjoy the peace of mind that comes with a consistently cool and comfortable environment for your aquatic friends. or you can contact the Lando Team to supply you with professional suggestions.


7. How to Maintain The Aquarium Chillers?

To ensure optimal performance and longevity of your new aquarium chiller, there are several key steps to follow:

  • Purchase a high-quality aquarium chiller and be sure to check the water pump before use. This will help prevent any potential damage caused by insufficient water flow.
  • Maintain a clean working environment for your aquarium chiller to avoid dust accumulation. This is crucial for extending the lifespan of its electrical components.
  • Prior to installation, verify that the materials used in the aquarium chiller are suitable for saltwater environments. Additionally, maintain a clean water source to prevent scaling and pipeline clogging.
  • Regularly assess the condition of the pipeline and check for any signs of clogging. If the pressure is low, consider cleaning the pump filter, particularly the system inlet filter mesh. It is recommended to clean these filters at least once a month.
  • Keep the condenser clean to prevent dust from negatively impacting the system’s performance. Regular cleaning is essential in maintaining optimal functionality.
  • Monitor the condition of the electrical components and adhere to their recommended service life. Regular testing is important to ensure the safety and efficiency of the aquarium chiller.

By following these guidelines, you can ensure the optimal operation and longevity of your aquarium chiller.


Aquarium Chiller for Sale


8. Troubleshooting Common Problems with Aquarium Water Chillers

Aquarium chillers are essential for maintaining a stable and comfortable environment for aquatic life and are highly valued by aquarists worldwide. However, like any mechanical device, they can occasionally encounter issues. Here, we will delve into common problems faced by fish tank chiller users and explore effective solutions:

1. Reduced Cooling Efficiency

Situation: The chiller runs longer than usual, struggles to reach the set temperature, or the water remains warmer than desired.

Possible Causes:

– Clogged or dirty condenser coil
– Low refrigerant levels
– Malfunctioning thermostat


– Regularly clean the condenser coil

– Check and refill the refrigerant if necessary (consider seeking professional help)
– Calibrate or replace the thermostat


2. Unusual Noises

Situation: Rattling, humming, or grinding noises when the chiller is running.

Possible Causes:

  • Loose internal components.
  • Malfunctioning or worn-out fan.
  • Blockages in the water flow.


  • Tighten any loose components inside the chiller.
  • Inspect and replace the fan if necessary.
  • Ensure there are no obstructions in the water flow and that the pump is functioning correctly.


3. Leaks

Situation: Water pooling around the chiller or dampness on the unit.

Possible Causes:

– Loose plumbing connections
– Damaged seals or gaskets
– Cracked water reservoir


– Tighten all plumbing connections
– Inspect and replace any damaged seals or gaskets
– Replace the reservoir if it’s cracked

4. Chiller Not Turning On

Situation: The chiller doesn’t power up when switched on.

Possible Causes:

– Electrical issues
– Faulty power switch
– Malfunctioning thermostat


– Ensure the chiller is properly plugged in and the outlet is functional. Check for any tripped circuit breakers.
– Inspect the power switch for damages and replace if necessary.
– Verify the accuracy of the thermostat settings and ensure correct functionality.


5. Frequent Cycling

Situation: The chiller frequently turns on and off in short intervals.

Possible Causes:

– Thermostat issues
– Refrigerant overcharge


– Calibrate or replace the thermostat
– Check the refrigerant levels and ensure they align with the recommended range.


Aquarium chillers are a cornerstone for maintaining a stable aquarium environment. While they’re typically the epitome of reliability, it’s important to acknowledge that occasional malfunctions can occur. To ensure your aquarium cooler operates at peak efficiency, we recommend that you follow a routine maintenance program and remain vigilant for any signs of malfunction. For specific guidance, always refer to your chiller’s user manual. If you are unsure of any problem, please do not hesitate to contact us for expert help. Lando’s technical support team is on standby to provide you with free advice and solutions.



Discover the ideal aquarium chiller with Lando!

Choosing the right aquarium chiller for your fish tank can be a challenging task.  It’s important to weigh all the available options and make a choice that’s smart and suited to your aquarium’s needs. If you are looking for a reliable and high-quality option, then Lando Aquarium Chillers are a great choice.

Lando aquarium coolers offer superior performance and eco-friendly designs to meet the evolving requirements of modern aquariums. This guide is designed to provide you with the necessary insight to help you understand the wide variety of aquarium chillers on the market and ensure you find the right chiller for your aquarium.


Aquarium Water Chiller



Ready to get started? Visit Lando Aquarium Chillers today and pick one up for yourself!