Top 8 Aquarium Water Chillers

All the living organisms living in water require a particular level of temperature to sustain. Whether it is a fish or microscopic microbial invertebrates which are cold-blooded, their body temperature is controlled by the environment.

So when you get an aquarium, you are bestowed with the responsibility of providing the similar sea life to your pets as well. Aquarium chillers fulfill that purpose for you by lowering the water’s temperature to the optimal level.

The priority of stable water temperature

Why do aquariums overheat?

How does an aquarium chiller work?

Thermoelectric coolers

How to select and aquarium chiller?

Water flow is important!

Chiller placement

Aquarium Chillers Review List

Here are some best chillers available in the market on the basis of price and features:

IceProbe Thermoelectric Aquarium Chiller

IceProbe Thermoelectric Aquarium Chiller - 4 in. x 4 3/4 in. x 7 1/2 in.
  • Unit is 4" x 4 3/4" x 7 1/2" includes probe. Cord: 5' 9", probe cord: 6'.
  • Warranty: Unit has a one year warrenty agains defects in materials and workmanship.

Last update on 2021-04-25 / Affiliate links / Images from Amazon Product Advertising API


  • Best suited for nano aquariums
  • Works without noise
  • Reliable
  • No water pump required
  • Inexpensive


  • Not suited for large fish tanks
  • Don’t give a nice look when placed on top of the tank.

It is one of the best known probe chillers available measuring about 4*4 ¾*7 ½ including the probe. They are popular because most of them are kept in small aquariums that are under 10 gallons. Two IceProbe chillers can be used on a 20 gallon aquarium but it can’t function properly in big ones. These chillers are made of high quality with a fan on top of the heat sink which is relatively quiet. In case you want to drill a hole through the tank, a 1.5” hole is needed.

The chiller comes with a sturdy threaded nut and a gasket which keeps it in place and prevents leakage. It requires 3-⅛ inches of clearance inside the tank. The chiller comes with a 1 year warranty.

Active Aqua Chiller 1/10 HP

Hydrofarm Active Aqua Chiller, 1/10 HP
  • Microcomputer control system and LCD display, very user-friendly
  • Large refrigeration capacity (recommended 13-105 gal, 50-400 L). Rated BTU per hour 960
  • Environmentally friendly (uses R134a) and surge protected, will automatically turn off in the event of a power surge
  • Tubing size: 1/2" (HGTB50), 3/4" (HGTB75) (comes with two sets of fittings)
  • Capable of chilling approximately 40 gal by 15 F, and 13 gal by 30 F (in 20 hrs)

Last update on 2021-04-25 / Affiliate links / Images from Amazon Product Advertising API


  • Reliable
  • Simple design


  • Marketed by hydroponics
  • Customer support is not available
  • Does Not come with manual book

It is a freon-free system that uses environmentally friendly R134a refrigerant. Though they are used primarily for hydroponics, the basic design is exactly like an aquarium chiller. It comes with a touch pad with LCD which makes it easy to set the temperature. It has a corrosion resistant titanium heat exchanger which is safe for salt as well as fresh water. It comes with two fittings - ½ and ¾ tubing.

This chiller is capable of chilling 40 gallon aquarium by 15F and 13 gallon tank by 30F. The flow range of the pump varies between 70-320 GPH. Dimensions are 16.5*9.6*14.4.

Hamilton Technology Aqua Euro Max

Hamilton Technology Aqua Euro Max Aquarium Chiller, 1/10HP
  • Maintain optimum water temperature by lowering the water temperature of your tank
  • Digital led temperature display control accurately maintains desired temperature
  • Anti-Freezing system will not allow the heat exchanger to freeze

Last update on 2021-04-23 / Affiliate links / Images from Amazon Product Advertising API


  • Powerful and compact design
  • Corrosion resistant
  • Anti-freezing system
  • Easy setup
  • Front condenser can be easily removed for cleaning.
  • Reliable compressor that uses DuPont ozone friendly refrigerant
  • Heavy duty condenser
  • Automatic power surge shut-off control with last set temperature recall system which works during a power outage.
  • Digital LED temperature control display for user-friendly programming.


  • The chiller works quietly but the operation is audible.

This is a powerful cooling system for both fresh and saltwater fish tanks. This brand is efficient, compact and quiet. Its chilling capacity is 50 gallons at 10F below room temperature and 30 gallons at 20F. It measures 13*8.5*16. The 1/13 model is for tanks up to 50 gallons with ½” fittings. For this, the recommended water pump is rated 160-295 gallons per hour.

JBJ Aquarium Arctica Titanium

JBJ Aquarium Arctica Titanium Chiller, 1/10 HP
  • The most quietest chiller on the market
  • Highly efficient condenser; use less energy
  • Corrosion resistant; contains safe ozone friendly refrigerant R-134A

Last update on 2021-04-25 / Affiliate links / Images from Amazon Product Advertising API


  • Works quietly
  • Reliable
  • Plug and play simplicity
  • 2 year warranty
  • Easy to read LCD controller


  • Slow customer service

It is one of the most advanced chillers out there. Its design provides maximum contact to increase chilling. The condenser is located at the front which draws cool air and releases the warm air out at the back.

It has a built-in thermostat and controller which maintains the optimal temperature within +/-1 degree F. Hoses connect to the chiller by ½”-¾ barbed fittings. Its dimensions are 16.5*9.8*18.5 with a 1 year warranty. It is fit for 130 gallons tank and the water pump should be rated at 160-295 gallons per hour.

Teco Tank TK-500 ⅙ HP

Teco Tank TK-500 1/6 HP Aquarium Chiller
  • For Typical Consumer Aquarium Sizes up to 130 Gallons
  • Built-in Heater, Rotatable Top Exhaust Conveyor and Magnetically-Affixed Filter Screen
  • Intuitive and Accurate Digital Thermostat Controller (ºF or ºC)
  • 1/6 Horsepower Motor and 450 Watts of Cooling Capacity
  • Made in Italy, 2-Year Limited Warranty

Last update on 2021-04-20 / Affiliate links / Images from Amazon Product Advertising API


  • Two year warranty
  • Outstanding built
  • Works quietly
  • Heating and cooling capabilities
  • Protection against corrosion
  • Red LED display
  • Thermostat probe fit on incoming water


  • Expensive

This chiller has a built-in heater and chilling capabilities. Its built is also very excellent which means no annoying rattles, sharp edges and vibrations. It is for tanks up to 130 gallons. The chiller has a rotatable top exhaust conveyor which allows heat exchange without hurdles. The high-quality fan moves a lot of air without making any noise. If your stand has a cabinet then you can extend the exhaust converter in 2-inch using modular conveyor extension pieces.

It has an inset and rotating water inlet and outlet valves which helps with placement in compact places. The filter screen is attached to the front, magnetically for effortless maintenance, removal and installation. It has a digital thermostat controller with accurate detection from 32-95 degree F. It measures 12.2*12.2*16.4 with water in and out connections fit ¾” diameter tubing.

Coralife 1/10 HP Aquarium Chiller

Coralife Energy Savers ACL36060 Chiller 1/10hp
  • Coralife is one of the markets leading manufacturers of premium aquarium products
  • Simple to install and maintain-includes reusable air filter
  • The air filter is easily accessible and can be removed for cleaning
  • Coralife is one of the markets leading manufacturers of premium aquarium products
  • Simple to install and maintain-includes reusable air filter

Last update on 2021-04-25 / Affiliate links / Images from Amazon Product Advertising API


  • One-step setup
  • Works quietly
  • Reusable air filter


  • One-year warranty

This chiller is the perfect fit for freshwater aquariums up to 55 gallons. It has an automatic temperature control system which sets the temperature at +/-2 degrees F. Programming it is easy through the digital LED display. The titanium heat exchanger is rust resistant and efficiently transfers heat from water to the room.

It comes with a reusable air filter which can even be removed for cleaning. The barbed ⅝”-¾” hose connections are adjustable. It measures 14.5*12.75*15.75 with recommended water pump up to 200-300 gallons per hour.

EcoPlus ½ HP Aquarium Chiller

EcoPlus Chiller, 1/2 HP
  • Max water volume of 132 gallons
  • Recommended pump size 317 to 793 GPH; Includes plumbing connections of 3/4 inch male NPT with hose fittings
  • 120 volt at 4.4 Amps
  • Country Of Origin: China

Last update on 2021-04-25 / Affiliate links / Images from Amazon Product Advertising API


  • Simple setup
  • Anti-corrosive titanium heat exchanger
  • Its Internal memory remembers the last setting and resets automatically during a power outage.
  • Digital LCD controller includes overload protection


  • Not reliable
  • Loud operation
  • High failure rate
  • Inaccurate thermostat

This ½ HP chiller is rated for up to 132 gallons. The recommended pump size is 317-793 gallons. It includes plumbing connection of ¾ inch male NPT with barbed hose fittings. It measures 21*15.5*22.

Kryos Advanced Aquatic Chiller

Deep Blue Professional ADB50060 Kryos Advanced Aquatic Chiller, 1/2 HP
  • Kryos advanced aquatic system 60 chiller put you in complete control of your aquatic environment
  • Changing the settings via the front panel controls, decide whether to go for maximum efficiency or extreme chilling power
  • The easy-to-read digital display keeps you informed of the precise temperature at which your system is operating
  • Top-quality compressor and titanium heat exchanger ensure the ultimate in trouble-free service
  • Features 1/2-horsepower for 200-310-gallon tanks, 750-1500 GPH flow rate, 39-90 degrees Fahrenheit range and 7.8-amperes

Last update on 2021-04-25 / Affiliate links / Images from Amazon Product Advertising API


  • Operates quietly
  • Easy to use front panel
  • Premium quality compressor
  • Bright digital display
  • Titanium heat exchanger ensures trouble-free service


  • Not suitable for beginners
  • Not reliable

These chillers give you full control of your aquatic environment. You can change the settings easily with front touch panel controls. You can go for maximum efficiency or extreme chilling power, it is up to you. Its dimensions are 13.25*15.75*17.75 with a recommended water flow rate of 750-1500 GPH. The ½ horsepower chiller is for 200-310 gallon fish tanks.


If you have a small aquarium I would suggest you to go for IceProbe Chiller because of its reliability, quiet operation and small size. The JBJ Aquarium Arctica is another perfect option due to its suitability for both fresh and marine water. It is reliable, works efficiently and is available at a reasonable rate. My third and last pick would be the Teco Tank Chillers because of their combination of chilling and heating capability. Its filter is easy to clean, the programmable audible temperature alarm provides another layer of protection and lastly, it isn’t that much expensive.


[Revised and Updated for July, 2019]
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Written by Debra Hutchinson, founder of FishXperts

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