Indoor Gardening 101: Finding The Best Water Chiller For Hydroponics

Hydroponic gardeners are always faced with many challenges when growing and caring for their plants. One of the problems we face is finding the right tools and equipment to use for the system. The water chiller is an essential part of a hydroponic system.

As someone who has a good amount of experience with regard to indoor gardening, I’m going to share with you my list of the best water chiller for hydroponics that can be obtained easily in the market. Also, I’ll share with you some considerations to make prior to buying the ideal water chiller that suits your specific requirements.

Editor’s Picks: 3 Best Water Chiller

Importance Of A Water Chiller For Your Hydroponics

If it’s your first time setting up a hydroponic system, you would wonder why there is a need for a water chiller. Water chillers are essential in balancing the temperature inside the hydroponic system. It provides the right temperature which plants require to grow strongly and flourish.

While there are many other means of lowering the temperature in a hydroponic system, only water chillers can provide adequate cooling to all parts of the plant, including its roots.

Although this product can be a bit pricier than other cooling tools used for hydroponic systems, it definitely is the most efficient and long lasting.

What You Need To Consider When Buying Water Chiller For Hydroponics

Providing the most effective temperature for your plants in your hydroponic system requires the best water chiller.

While finding one is a great idea, you should be careful about choosing the wrong water chiller for the reason that it might not be compatible with your hydroponic system and it may not deliver your expected results.

Here are the things to consider when buying a water chiller to make sure that you are buying the right one that suits your needs.

Type Of Water Chiller

Among the primary types of water chillers, today include the drop-in chiller, the thermoelectric chiller, and the in-line chiller. The most common among all the types is the drop-in water chiller which is dropped directly into water filters. They are equipped with a probe that both improves and filters the air.

The Thermoelectric chiller on the other hand, is a common choice for small-sized hydroponic systems and aquariums. Among the three types, this is the most economical.

Lastly, there is the in-line chiller which is best used for large hydroponic systems or water systems. It designed to carry large volumes of water and is designed with a plumbing system for more efficient flow of water for cooling.


You should also obtain a water chiller that matches the size of your reservoir for optimum efficiency. In line with considering the size of your water chiller, you should also know just how much water your hydroponic system can contain.

As soon as you’ve determined the total volume that your hydroponic system can accumulate, you can be able to come up with an accurate size for your water chiller. An essential component of the water chiller that contributes to its size is the tank. The more volume you need, the bigger tank it will have.

Cooling Capacity

Of course since this equipment provides cooling to your hydroponic system, it is also important to consider its cooling capacity. When considering the cooling capacity out of your water chiller, you can also bear in mind a few factors such as flow rate, ambient temperature, lighting system, heat sources that surround the system, and many others.

By knowing other factors that can affect the temperature of your hydroponic system, you’ll know if a high or low cooling capacity would be best suited for your needs.

There are also those minor considerations that usually don’t affect the performance or effectiveness of the water chiller. Some of them are noise levels, vibrations, material, and accessories. Also, you may want to consider an option that is rust and corrosion resistant for longer lasting performance.


lastly, the price is also an important consideration when buying these hydroponic components. While investing in the more expensive water chiller can definitely require you to shell out more cash, it can provide you with many benefits that the cheaper selections can’t.

An expensive water chiller has the advantage of being more durable and made from high quality materials. You are guaranteed for a long lasting water chiller that is more resistant to wear and tear with these features.

Top 5 Hydroponic Water Chillers

Water chillers are indeed a helpful component of a hydroponic system because it provides a stable temperature that is comfortable for the plants for optimal growth.

Among those reliable and efficient water chillers choices, today include the following.

1. IceProbe Thermoelectric Water Chiller

IceProbe Thermoelectric Aquarium Chiller - 4 in. x 4 3/4 in. x 7 1/2 in.

Investing in a IceProbe Thermoelectric Water Chiller could also be a good idea if you are looking for a smaller sized water chiller for your hydroponic system or for your aquarium.

This is a recommended choice for small sized systems because it has a smaller size that is designed to contain 55 gals or less. This product is a thermoelectric type of water chiller that efficiently maintains cool water temperature which is suitable for plant growth.

It is designed with a set of pre-filters along with siphons that makes cleaning and maintenance easy and hassle-free. In addition, this electric-powered equipment is features a temperature controller which automatically, activates and deactivates the equipment under specified temperature.

Despite being powered by electricity, this product is guaranteed to provide zero noise in operation and that it is energy efficient which saves you money from excess electricity. It is compatible with other components and parts of a hydroponic system such as the pre-filters, sumps, siphon overflows and others.

If you’re looking for a water chiller that doesn’t require manual intervention or control then this product could be a great option.


  • Provides lower temperature than others
  • CompactIdeal for small aquariums and hydroponic systems
  • Durable
  • With 1 year warranty


  • Fluctuating temperatures
  • Fragile controllers

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2. Hamilton Technology Water Chiller

Hamilton Technology Aqua Euro Max Aquarium Chiller, 1/4HP

The Hamilton Technology Water Chiller could also be an excellent choice if you want a water chiller that is flexible which can be used for aquariums as well as for hydroponic systems.

One thing that I personally like about this water chiller is that it is conveniently designed with an anti-freezing system which guarantees no freezing in the tank. This feature is very essential, especially when using the product on aquariums seeing that marine animals are sensitive to extreme cold despite being cold blooded.

In the event that you accidentally lower the temperature in your hydroponic system or aquarium, it doesn’t freeze and maintains a constant temperature due to the anti-freeze feature. This product is also designed with an LED display control which lets you adjust temperatures according to your preference.

It is also designed with a heat exchanger which delivers 25% BTU/watt which far exceeds other conventional is made from high quality and durable materials such as Titanium to ensure durability and longevity.

Lastly, the Hamilton Technology Water Chiller is also energy efficient which ensures excellent performance at a convenient price.


  • With anti-freeze feature
  • Durable construction
  • Easy to install
  • User friendly
  • No sound produced


  • No maintenance and cleaning instructions
  • May not be available locally

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3. JBJ Water Chiller

JBJ Aquarium Arctica Titanium Chiller, 1/10 HP

The JBJ Water Chiller is also a favorite choice of mine as well as other hydroponic system owners because it runs perfectly without making any noise.

Seeing that I have a substantially sized hydroponic system at home, having a water chiller that produces a loud noise is inevitable – however with this product, you’ll worry no more about noise and you can sleep better at night as it operates during sleeping hours.

In addition to its zero noise performance, it is also energy efficient because of its high quality condenser which tops its competitors. Durability is also guaranteed with the JBJ Water Chiller as it is manufactured with corrosion and rust proof materials.

This product is also fast-chilling and is designed with R-134A which is a refrigerant that is safe to the environment. It is also designed with an LED display for clear and convenient monitoring of the temperature as well as the desired settings and adjustments.

Another thing that I like about this product is that it is easy to install and use and it is recommended for beginners.


  • Fast cooling time
  • No fluctuations in temperature
  • Excellent customer service
  • Energy efficient
  • Durable construction
  • Long lasting


  • Creates minimal vibrations
  • May not be available locally

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4. EcoPlus 728707 Water Chiller

EcoPlus 728707 Commercial Grade Water Chiller 1/2 HP fertilizers, 0.5, natural

Lastly, you can also opt for the EcoPlus 728707 Water Chiller if you want a flexible as well as durable water chiller that can be used on hydroponic systems, aquariums as well as on reservoirs.

This product is a common choice for its durability as it comes with commercial-grade titanium heat exchanger which is especially designed to deliver high performance as well as corrosion and rust resistance.

It also has a durable housing made from high quality GI steel that is powder coated to provide toughness and at the same time resistance to corrosion or rusting. Just like the other options mentions in this list, this product also comes with LCD display to provide clear as well as easy operation and control.

One advantage of this product among others is that it comes with a temperature remote control which is usable at distances of 30 feet. This provides better manageability for the device when the hydroponic system or aquarium is set in a remote location.

It also comes with an auto-restart memory for automatic restarts in case of power outage.


  • Constant water temperature
  • Fast chilling time
  • Durable construction
  • Long lasting
  • Made from high quality materials


  • May not be available locally
  • Expensive

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5. Active Aqua Chiller

Active Aqua Chiller 1/10 HP

One popular hydroponic water chiller that is used by both the professional indoor gardener as well as the hydroponic system beginner is the Active Aqua Chiller.

One selling point of this product is that it provides an impressive refrigeration capacity. Compared to other conventional water chillers, this product provides more capacity which is 13-106 gal. With this much water circulating through the system, it can provide cooling for as long as 20 hours.

This product is also safe to the environment as well as safe to the plants and user since it is made from R134a substance which enables stable cooling for long hours. In addition, this product is also designed with microcomputer control component along with an LCD system for better manageability when adjusting the temperature of your indoor garden.

Also, this product is a common favorite because it is very easy to assemble and can be used right away within minutes after assembly. It doesn’t produce any noise as well as any vibration that can cause distraction during the night.


  • Durable material and construction
  • Fast cooling
  • Does not create any noise
  • Zero vibrations
  • Lasts for a long time
  • Impressive capacity


  • Fragile tubing
  • Sensor breaks easily upon constant use and contact
  • Requires water pump for aquarium set up

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Our Final Verdict

Despite the number of available products and tools that can be used to lower the temperature of a hydroponic system, not all are as efficient as well as manageable as the water chiller. One particular choice that we recommend from this list is the IceProbe Thermoelectric Water Chiller.

This is our top choice in this list for the reason that while it is more compact and much smaller-sized compared to other options; it does not fall behind in terms of energy efficiency, durability and performance. Despite being electric-powered, it doesn’t provide any noise during operation.

So what do you think of our list of top water chillers for hydroponics? If you have questions, comments, or suggestions, don’t hesitate to message us through our comment box below. We always love a share of thoughts.

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