Most of us will feel like melting if we have to spend the summer somewhere without air conditioning. While this is an inconvenience for us, it is pretty different for fish.

Even fish that can survive in the warmest water temperatures, such as tropical fish, can only live at about 83°F. Anything above that will make the fish inconvenient and perhaps mean death. What is the real fix, you ask? Aquarium chillers!

Aquarium chillers are available in a range of configurations. And, while some might be pretty pricey, their extended lifespan and cheap upkeep make up for it. It’s a one-time expense that will last for many years before requiring fixtures or replacements.

To make the hunt more accessible for you, we tested numerous aquarium chillers so that we can find the best one that will suit you in every way. Among the champs, we found JBJ Aquarium Arctica Titanium Chiller to be the best.

But in case you are looking for something else and some other designs, don’t worry; we have included nine more amazing aquarium chillers with excellent features in our list. So without further ado, let’s jump to the reviews.

Best Aquarium Chillers Reviewed

All the products mentioned here are available online at

JBJ Aquarium Arctica Titanium Chiller

 JBJ Aquarium Arctica Titanium Chiller

Product details:

  1. LED temperature display
  2. Smart memory chip
  3. Quick installation

The JBJ Aquarium Chiller is a high-end, premium-grade device that provides excellent value for money. I researched chillers extensively and settled on JBJ.

Thanks to the system that enables and boosts the condenser; the JBJ Chiller cools your tank efficiently without using too much power. This machine performance enhances cooling efficiency per ampere, lowering energy expenditures.

This chiller’s fully automated digital controller lets you regulate the water temperature to your preferred range without harming your fish. The JBJ chiller is ideal for aquariums in tiny living rooms because of its low noise, minimum disturbance, and compact size.

I was hesitant to spend this much money on this unit, but I’m pleased I did. Everything is running smoothly. It maintains my aquarium conditions within 1° of the stated temperature. My system is set to 75°F, which is perfect for my tropical fish.

What we like:

  1. Installation is very easy
  2. Temperature control is just perfect

What we dislike:

  1. Not very long-lasting

IceProbe Thermoelectric Aquarium Chiller

IceProbe Thermoelectric Aquarium Chiller

Product details:

  1. 50W
  2. Best for 10 gallons
  3. 6 to 8 degrees from ambient room temperature

One of the most well-known “probe” chillers in the aquarium hobby is the IceProbe Thermoelectric Chiller. Many enthusiasts consider them to be popular chillers. IceProbe chillers are renowned because they can be kept in small tanks of less than ten gallons.

It’s for my axolotl, and it keeps the water in my 10-gallon tank at a constant 65 degrees Fahrenheit even when it’s not entirely immersed. I can’t hear it working because it’s so quiet, and it’s perfect for the price!

I’m delighted I found it since now I don’t have to maintain ridiculous fans on top of my tank and worry about my axolotl overheating. Another more giant hole was made in the lid in case the temperature in the room rises, and it will allow the rod to cool faster and keep up with the heat.

If you need to drop the temperature by more than 8 degrees, you should search elsewhere. The chiller also takes a long time to cold my 7-gallon recirculating reservoir. However, it maintains the temperature below my threshold. As a result, it is highly convenient in that regard.

What we like:

  1. Works well for small fish tanks
  2. Quite cheap

What we dislike:

  1. Does not have an on/off switch

Hamilton Technology Aqua Euro Max Aquarium Chiller

Hamilton Technology Aqua Euro Max Aquarium Chiller

Product details:

  1. 150gallon
  2.  DuPont cooling agent
  3. Memory chip

The gadget is fantastic; it works perfectly and has brought my water temperature up to where it needs to be so that my fish do not overheat in this hot weather. I chose to buy this 1/4 HP unit for my reef tank after researching multiple sellers and was shocked at the prices.

I was afraid of incidents involving a chiller, hoses, and water, but my fears were unjustified. The installation process was quick and straightforward. Because the chiller is a little too large for my tank, it operates for about 10-12 minutes every hour to keep my tank at the set temperature.

The controls are intuitive and straightforward to use. The chiller has been running for almost two months and has performed wonderfully, maintaining the temperature consistently 24 hours a day, seven days a week. Its performance is quite impressive and is highly recommended.

What we like:

  1. Power saving technology
  2. Easy installation

What we dislike:

  1. The inbuilt thermostat is not accurate

Active Aqua Water Chiller

Active Aqua Water Chiller

Product details:

  1. 50‒150 L
  2. Freon-free
  3. High rate of flow

Hydroponics producers typically utilize active Aqua chillers, but they can also be used as aquarium chillers. The control screen and efficiency are all appropriate for aquarium use. The product is also environmentally friendly, so you won’t have to worry about your fish’s health.

You may easily set the temperature thanks to the touchpad with an LCD. Temperature settings are saved in the memory of the unit. This means that the chiller will resume and maintain the correct temperature setting after being unplugged or experiencing a power outage.

The default temperature setting is two degrees Fahrenheit higher than the temperature setting. This prevents the chiller from short-cycling or going on and off repeatedly. This function will significantly increase the unit’s longevity.

To circulate the water through the chiller in your aquarium, a small water pump is necessary. Nutrients should not create any problems as long as the chiller is flushed periodically to eliminate calcium and other deposits that may accumulate from the nutrients over time.

What we like:

  1. Simple and easy to use
  2. Long-lasting

What we dislike:

  1. No separate instructions for aquariums

Teco Tank Aquarium Chiller

Teco Tank Aquarium Chiller

Product details:

  1. 130 Gallons
  2. Built-in Heater
  3. 450 Watts

Teco TANK, made in Italy, is a comprehensive temperature control system for aquariums. It is more sophisticated than the other chillers we’ve looked at. This device includes a built-in heater and cooling system.

The build quality is of the utmost excellence. The fit and quality are superb. This means no sharp edges or irritating rattles and vibrations. The device can easily keep the temperature of a medium-sized fish tank consistent.

Its distinguishing feature is a movable top exhaust conveyor, which allows the user to control airflow and heat exchange away from the chiller unit, resulting in improved performance in its operating environment.

The design improves heat transfer from the water, which makes this chiller extremely efficient. A vast, high-quality fan pushes a lot of air without making as much noise as small rotors.

What we like:

  1. Excellent performance
  2. High-quality build

What we dislike:

  1. A bit on the expensive side

Coralife Energy Savers Chiller

Coralife Energy Savers Chiller

Product details:

  1. Reusable air filter
  2. 64 degrees Fahrenheit
  3. 100 gallon

A fantastic product to have if you want to save your fish from the summer heat. The entirely automated mechanism will keep the temperature set at +/- 2 degrees Fahrenheit. The digital LED display makes it simple to set up in a single step.

The titanium heat exchanger is corrosion-resistant and conveniently distributes heat from the tank to the room. Reusable air filters are easily accessible and may be cleaned. Within 30 minutes, it had cooled the tank to the desired temperature. It was simple to set up.

The best feature includes an integrated power outlet for the heater, allowing the chiller to regulate the temperature by turning on the heater if the water becomes too cold. Otherwise, a chiller and a heater with separate power settings will be continually at odds.

I have the tank sitting next to my desk at home, and it is so quiet that I face no problem while working.

What we like:

  1. One-step installation
  2. Reusable filters

What we dislike:

  1. Low durability

EcoPlus Chiller

EcoPlus Chiller

Product details:

  1. 120 volt at 4.4 Amps
  2. 132 gallons
  3. LCD display

This is an excellent aquarium chiller which you will not regret buying. The device consistently keeps the water in my system less than a half-degree below the temperature I selected. I’ve been using it for a few months and haven’t had any issues.

A solid product that does exactly what it says in the ad. Keeping the water temp in my barrel has made it much easier to control the ph at acceptable levels with minimal effort or chemicals. It also has a strong effect on the ability of the plants to absorb nutrients for better growth.

I’ve got this one on my 90 gals, and it’s working fine. You become accustomed to the noise, which isn’t particularly loud but fades away after a time. My tank was at 82 degrees Fahrenheit, and I used to go through top off the water quickly, but after installing the unit, I would use a half to a gallon of top off water every 11 days.

What we like:

  1. Amazing performance
  2. Easy to setup

What we dislike:

  1. Loud operation

BAOSHISHAN Aquarium Chiller

BAOSHISHAN Aquarium Chiller

Product details:

  1. 75 gallons
  2. 20-26°C
  3. Built-in Fan

The Baoshishan Aquarium Chiller is a brand-new product on the market. It is designed to be a premium-quality chiller at affordable pricing. It is intended for use in aquariums and hydroponic systems.

It has some more advanced features, such as a digital temperature controller. The built-in controller prevents the machine from overheating the tank. The controller comes from the refrigeration sector and is one of the higher quality ones with a chiller. It is intended to be a silent and straightforward chiller.

The biggest issue with this unit is that it is new to the market, and a few users have reported that the item has tripped their breaker switches owing to the high energy requirements of these units. The pump that comes with it is not particularly powerful, and the manuals are pretty ineffective.

I’ve only had this for about a week, but it has done its job so far, and I will update after a few months of use. I can conveniently use this in my 70 gallons tank.

What we like:

  1. Affordable price
  2. Accurate temperature control

What we dislike:

  1. High power consumption

Poafamx Aquarium Chiller

Poafamx Aquarium Chiller

Product details:

  1. 16 gallons
  2. 22℃
  3. 200W

This is one of the best units that can efficiently lower your aquarium’s temperature and maintain an optimum temperature for your fish. It takes a little longer to cool down. But  It’s simple and safe enough to leave it running all the time.

This 16-gallon chiller is ideal for small domestic aquariums and ornamental fish tanks. This chiller’s quest for a better cooling effect and faster cooling speed necessitates the use of less water volume. In a 20 gallon tank, I have two axolotls and two newts.

I’m now using this tank chiller to keep my axolotls at a pleasant temperature of about 64 degrees Fahrenheit, which has never let me down. I recommend this cooler over tank fans because of its size, value, and efficacy.

It occasionally exceeds its cooling capacity, but only by a few degrees. The controls are a bit difficult, but you won’t face any problems once you figure it out.

What we like:

  1. Accurate temperature control
  2. Fast cooling

What we dislike:

  1. Controls are a bit difficult

Zoo Med Aquarium Cooling Fan

Zoo Med Aquarium Cooling Fan

Product details:

  1. Duckbill control vent
  2. For nano tanks
  3. Low profile unit suction cups

Zoo Med’s cooling fan was a wise choice. This is an excellent low-profile fan for my fish aquarium. My tanks are around 72 degrees without a heater. It’s far too hot for fish. But, with this cheap fan, I’ve been able to keep the water at a steady 64-65 degrees.

The fan output is modest and only fits through the top gap where the filter is located. It doesn’t produce a strong air current, but the result is adjustable, so you can have it softly blow across the top of the water, and 4-6 degrees in temperature reduction is excellent for the price.

Extremely useful for keeping a small aquarium cool. In the summer, it makes a significant impact. Depending on how warm you keep your house in the winter, you may have to turn it off.

It does make some noise. However, this could be due to an incorrect attachment. If it’s a little loose, it rattles and buzzes like crazy. If properly mounted, it has the volume of a standard floor fan.

What we dislike:

  1. Excellent service at a cheap price
  2. Adjustable fan

What we dislike:

  1. The suction cups are not strong

Types of Aquarium Chillers

Aquarium chillers are primarily of 3 types:

  1. Flow-through chiller
  2. Drop-in or immersion chiller
  3. Thermoelectric cooler
  • Flow-through chiller

The most prevalent form of aquarium chiller operates on the concept of refrigeration. The aquarium chiller’s aim is to reduce the temperature of the the water. It absorbs heat from the water and radiates it into the environment during the process.
A chiller is made up of four parts:

  1. Expansion valve
  2. Evaporator
  3. Condenser
  4. Compressor

An evaporator is a heat exchanger in which the coolant evaporates by absorbing heat from the water. The heat exchanger is made of titanium, which efficiently transfers thermal energy and prevents corrosion.

The vapor from the evaporator enters the compressor section, where its pressure rises and it flows into the condenser coil. The vapor coolant condenses inside the condenser coils. A fan blows cool air past hot condenser coils to dissipate heat.

The high-pressure coolant fluid in the condenser unit is pumped through expansion valves, reducing its temperature as it enters the evaporator, and the cycle is repeated.

  • Drop-in or immersion chiller

A drop-in or immersion chiller functions similarly to a flow-through chiller. Drop-in chillers, despite the fact that they are placed within your filter unit, are not commonly employed at home due to their size and loudness.

Many individuals, however, utilize them on commercial tanks where space is not a concern.

  • Thermoelectric cooler

Another type of chiller is a thermoelectric cooler, which works well in smaller tanks of about 10 gallons.

A probe that lies in water absorbs temperature from the tank when used in an aquarium. That heat will then be transported to a heatsink, which will be placed above it and cooled by ventilation.

This type of aquarium chiller is popular because of its compact form. They’re also reasonably priced, depending on the manufacturer you choose. But what are the drawbacks? First, drill a hole or place a device on which you can connect one for use.

How to choose the Correct Aquarium Chiller?

While buying an aquarium chiller, you must keep some points in mind.

Aquarium size

When looking for aquarium chillers, you’ll undoubtedly find that they all have aquarium volumes measured in gallons. Make sure to buy a chiller that is appropriate for the size of your aquarium.
Models designed for small tanks will not function as well for large tanks. Because it is not intended for such a significant weight, this may reduce the product’s lifespan.

Large size

Chillers specially meant for large tanks can quickly lower the temperature of your tank water within a short period. Among these, JBJ Aquarium Arctica Titanium Chiller is the best product as you can use it for aquarium sizes ranging from medium to large.

Small size

Aquarium chillers designed for small tanks can’t be used in large tanks but can be effective if you have a 10-15 gallon tank. Poafamx Aquarium Chiller is best suited for small aquarium sizes.

Noise while operating

We all despise noisy machinery, especially when it is on practically constantly. When selecting a chiller, look for one that does not produce excessive noise. Most chillers make some noise while operating. Although it is inescapable, the critical question is: how loud is the noise?

Some have a mild buzzing sound, while others have a murmur. Make sure you pick a quiet chiller because you’ll be running it for the majority of the summer.

Active Aqua Water Chiller is quiet, and you won’t even feel its presence if you come in its vicinity.

Dual purpose

Some chillers, like air conditioners, have a heat exchange function that allows you to manage temperatures in both directions. This feature is not available on all chillers, but it is an excellent alternative because it allows heat to be exchanged faster than other chillers.

But in case you want a separate heater, you can check our article on the best aquarium heaters.

Coralife Energy Savers Chiller has an integrated heat exchange system. Still, it works separately from the chiller, so you don’t have to worry whether your aquarium will get heated instead of cooling.

Flow rate

One of the most critical aspects of any chiller is the flow rate. If the flow rate of the canister filter equals that of the chiller, you’re good to go. If not, you will need to purchase a separate pump. The flow rate should be enough to pump the desired amount of water through the chiller.

JBJ Aquarium Arctica Titanium Chiller has an adjustable digital controller that enables you to control the flow of the device conveniently.

Power Usage

Your goldfish rely on you to maintain a pleasant temperature in their water. Your aquarium chiller, which will be working 24 hours a day, will do the work of keeping the aquarium temperature appropriate for your fish.

When considering purchasing one, keep energy usage in mind. The more efficient the machine, the better, as this will help you save money.

Again, JBJ Aquarium Arctica Titanium Chiller is an absolute winner in this job role. Its efficient cooling factor utilizes less energy and reduces power consumption.


Does my aquarium need a chiller?

Most aquarium owners, particularly those who are just starting, do not require a chiller. Aquarium chillers are intended for use in more sophisticated aquarium setups.

How cold can aquarium chillers get?

An aquarium chiller is relatively quiet with a 50-dB sound level. The range for user-set temperature is 39°F to 90°F (3°C to 32°C).

Why Are Aquarium Chillers So Expensive

Chillers, it appears, are so expensive because they are specialised refrigerators. Furthermore, water has a considerably higher specific heat capacity than air, and many fish tanks are improperly insulated, so it will require a lot more energy to cool your aquarium.

How long do Aquarium chillers last?

On average, an aquarium chiller that can last up to 7-8 years is appropriately maintained.

Our Verdict

Aquarium chillers keep your fish tank at the proper temperature.

All of the items featured above are among the top aquarium chillers on the market today. It would be the JBJ Aquarium Arctica Titanium Chiller if we had to pick only one, owing to its efficient and robust operation.

It’s also silent and vibration-free, making it ideal for any space in your home!

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