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Under-Sink Water Chiller

H ydration is important, especially on hot days when we need to drink more water. But during the summer, the water supplied to the tap is warm and most of us prefer it cold. According to the specialists, drinking cold water during the summer can help us prevent heat strokes. It can also boost our metabolism and lose weight much easier. At the same time, cold water is excellent after exercising as it helps lower the body temperature.

The most convenient solution to enjoy cold water at home or at the office is to install a water chiller. We selected for you the best under sink models. They are easy to use and highly efficient, featuring at the same time a long lifespan. And the best thing is that most of them work with a water filter system. We gathered all the necessary information to compare them and then we reviewed each model. Both advantages and disadvantages will be presented, so choosing one for your home will be very easy.

If you want to combine the system with a filtering unit, we recommend that you check out here the best whole house water filter systems for well as these products clear the impurities in the water coming out of all the taps in your home.

Best 7 Under-Sink Water Chillers Compared

Flow Rate
Tank Capacity
Cold Water Outlet Temperature
Adjustable Water Thermostat
Possibility to Connect to Other Drinking Water Systems

Best Overall
1.75 GPH
1.2 Gal.

Our Choice
1.32 GPH
0.6 Gal.
0.52 Gal.
2.37 GPH
0.31 Gal.
3 Gal.
1.3 GPH
0.7 Gal.

1. EverCold WIC400S

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  • Power Consumption: 103W
  • Compressor Type: Hermetic
  • Flow Rate: 1.75 GPH
  • Tank Capacity: 1.2 Gal.
  • Cold Water Outlet Temperature: 50ºF
  • Adjustable Water Thermostat:
  • Fittings: 1/4” Quick Connect

This system will deliver you on-demand cold water at home or at the office. Its compact design makes it the perfect solution for most under sinks, being easy to install due to the quick connect fittings.

With a power consumption of 103W and a cooling capacity of 130W, this water chiller won’t increase your electricity bills. It features a 1.2-gallon water tank and can deliver up to 1.75-gallon of cold water per hour. The water temperature from the outlet will be approximately 50 degrees Fahrenheit.

For long-lasting performance, the cabinet is made of powder coated galvanized steel and all the waterways are made of stainless steel. The R134a refrigerant is ozone friendly, being a better option for the environment.

It comes with a hermetic compressor and an air cooled condenser. For added convenience, you can control the water temperature with the help of the adjustable thermostat. The chiller is warranted for a period of 1 year against defects in materials and workmanship.


  • Comes with a 2-foot long insulation
  • External tube evaporator
  • External dial for water temperature control
  • Easy to access drain plug
  • Hermetically sealed refrigeration system


  • There are customers who complain about the longevity of the system


Overall, this system is well-made and comes with many built-in features. You will need a single lever accessory faucet when you install it which is not included. For buying this chiller you have to be willing to pay more many. It is the most expensive model selected by us. Also, according to some customers, its durability is questionable.

2. Chiller Daddy CHL-501

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  • Power Consumption: 140W
  • Flow Rate: 1.32 GPH
  • Tank Capacity: 0.6 Gal.
  • Minimum Water Pressure: 15 PSI
  • Maximum Water Pressure: 100 PSI
  • Cold Water Outlet Temperature: 42ºF-54ºF
  • Adjustable Water Thermostat:
  • Fittings: 1/4″ O.D. Stainless Steel Tubes In & Out

Here is another water chiller that was specially designed to fit under the sink. It doesn’t occupy too much space, so you can install it even if you have a drinking water system installed under the sink. It is the lightest system in our list, weighing only 23.75 pounds.

The 140W motor is powerful enough to deliver water instantly. The water reservoir has a capacity of 0.6 gallons and the flow rate is 1.32 GPH.

With the built-in thermostat you can adjust the cold water temperature according to your preferences. The temperature range is between 42 and 54 º F. Both the inside and the outside of the unit is made of stainless steel.

Furthermore, it comes with an eco-friendly R134a refrigerant. The chiller is easy to install and is ideal for both home or office. For more convenience, it comes with a 3-prong 72-inch grounded cord.

As about the warranty, this model is covered by a 1-year warranty.


  • Features a drain cap
  • Easy to install due to the quick connections tubes and unions
  • Lightweight design
  • UL and CSA certified
  • There’s also available an optional pressure limiter


  • When chilling the water it becomes a little bit noisier


Great value for the money. The system works very well and pretty fast. Installing it is easy and it features a compact and lightweight design. The system is UL and CSA certified. If you want, you can buy a pressure limiter for extra money. The only disadvantage is that is a little bit noisy but luckily the cabinet door will cut the noise.

3. Iceberg CMI 01

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  • Power Consumption: 75W
  • Flow Rate: 3 GPH
  • Tank Capacity: 0.52 Gal.
  • Minimum Water Pressure: 20 PSI
  • Maximum Water Pressure: 80 PSI
  • Cold Water Outlet Temperature: 39.2ºF-50ºF
  • Adjustable Water Thermostat:

For enjoying cold water on demand, this chiller needs to be connected to a countertop faucet. It is compact and lightweight. With a power consumption of 75 W, this system won’t raise your electricity bill.

It can deliver up to 3 gallons per hours which is quite impressive. The tank has a capacity of 0.52 gallons. You can select the desired water temperature with the help of the adjustable thermostat. The minimum temperature is 39.2 º F while the maximum is 50 º F.

The environmentally-friendly refrigerator is a nice plus as well as the included quick-release 3M filter. The water tank is made of stainless steel and the evaporator is made of copper.

For superior efficiency, the system was tested in extreme temperatures, delivering the same performance in all climates. Il also includes a pressure reducing valvevand a shock arrestor which protect the system from pressure surges and water mains. This product is covered by a 2-year warranty.


  • Comes with multiple certifications: CB, C-UL-US, WRAS
  • Long, 2-year warranty
  • Great output capacity: 3 gal. per day
  • Stainless steel water tank
  • Excellent performance in all climates


  • It can’t support much volume


Ideal if you live in a cold or hot climate. It features an impressive flow rate and is made of highly-durable materials. Unlike the other systems selected by us, this one comes with a 2-year warranty. Among the things we don’t like are the fact that it doesn’t support much volume.

4. Express Water PC2000

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  • Power Consumption: 160W
  • Flow Rate: 2.37 GPH
  • Tank Capacity: 0.31 Gal.
  • Minimum Water Pressure: 40 PSI
  • Maximum Water Pressure: 80 PSI
  • Cold Water Outlet Temperature: 36 ºF -38ºF
  • Adjustable Water Thermostat:

This water chiller comes with a nice design and some great features. It looks like a black box with silver front side and it fits under most sinks. It weighs 30.9 pounds. It can be used with other drinking water systems, thus allowing you to drink cold filtered water every time you want.

The water delivered by the chiller is around 36-38 degrees Fahrenheit, so is quite cold. According to the manufacturer’s specifications, it has a flow rate of approximately 2.30 gallons of water per hour.

The system may require some work to install it as the provided instructions are rather poor. Fortunately, once installed, it doesn’t require any maintenance.

To make things easier for you, this model features operating LED lights which are conveniently placed on top of the unit. Last but not least, the system was rigorously tested in terms of performance and quality.


  • Features a cooling fan on the right side of the unit
  • Water inlet and outlet are conveniently positioned on the top
  • Budget-friendly
  • Features power and operating LED light
  • Attractive design


  • Poor instructions
  • Louder operation when it chills the water
  • No outside knob for adjusting the water temperature


Nice option if you want a long-lasting chiller. It is available at an affordable price and it works pretty well. In comparison to the other models that have a poor design, this one comes in a nice black box that features operating lights. The fan works only when the system cools the water and it does a great job. Nevertheless, the instructions are rather poor and some customers complained about the fact that is rather noisy when it cools the water.

5. Kitchen Choice KC870

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  • Water Reservoir Material: Stainless Steel
  • Evaporator Material: Copper
  • Casing Material: Steel
  • Dimensions: 16” x 11.5” x 10”
  • Weight: 29 lbs.
  • Adjustable Water Thermostat:

Made by Kitchen Choice, the KC870 is another great chiller that can be installed under the counter. It measures 12 x 16.50 x 12 inches, so it is not the most compact option to go with. Therefore, you need more free space under the sink in order to install it.

The chiller is made of durable and quality materials just to make sure it provides the same performance for many years. The housing is made of powder cold rolled steel, the water reservoir is made of 304 stainless steel and the evaporator is made of copper.

The unit doesn’t come with a separate faucet, so you need to consider buying one separately. It comes in a nice light pale green color and it can be used with a water filtration system to drink safe cold water on demand.

Once installed, the chiller provides a quiet operation, so you will barely hear it while working. The manufacturer also added some nice features like a pressure reducing valve and a shock arrestor. It also includes a 1-year warranty.


  • Built-in adjustable thermostat
  • The reservoir is made of stainless steel
  • Enduring housing
  • Equipped with a cooper evaporator
  • Features a pressure reducing valve


  • Few specifications offered by the manufacturer


Nice features and affordable price. Delivers cold water without hassle and it is very durable. The installation is pretty simple and it comes with all the necessary instructions.

6. Franke CT-200

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  • Wattage: 780W
  • Flow Rate: 1 GPH
  • Tank Capacity: 3 Gal.
  • Minimum Water Pressure: 30 PSI
  • Maximum Water Pressure: 100 PSI
  • Adjustable Water Thermostat:

This water chiller is made by Franke, a brand that designs and manufactures a wide variety of products for your home and not only. From kitchen and foodservice systems to water and coffee systems, this brand offers advanced solutions for your needs. With more than 100 years of experience, Franke is now present all around the world.

Just like the other models, it requires under sink installation. But what differentiates it is that it doesn’t only provide cold water. This device will also filter the water before it runs from the tap into your glass. Therefore, you and your family will be able to drink fresh water without contaminants.

For installing it, you need to first check the available free space under the faucet. The chiller is bulky, so the width has to be of at least 10.5 inches and the height of at least 15 inches. The installation is pretty simple as it is a freestanding device. Also, it is custom fitted and it features color codes for the sink lines.

The construction is very durable as it is made of solid materials. Both the tank and the tubing are made of stainless steel. The power cord is 4-foot long, so you have to make sure it reaches the electric outlet.


  • Made of stainless steel to increase its durability
  • Delivers clean and cold water on demand – 40 degrees Fahrenheit
  • Easy to install due to the color codes
  • It is NSF listed


  • Not very compact
  • Low water flow-rate


This is the only water chiller in our list that can also filter the water. This is great for people who don’t have a water filtration system. It is easy to install and highly resistant to corrosion.

7. Everpure Polaria EV931830

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  • Power: 155W
  • Flow Rate: 1.3 GPH
  • Tank Capacity: 0.7 Gal.
  • Cold Water Outlet Temperature: 50-90ºF
  • Adjustable Water Thermostat:
  • Fittings: 1/4″ Outer Dimension Tubes

Specially designed to deliver chilled water, this unit is ideal for your home. It is 14 inches tall, 7 inches wide and 17 inches deep, therefore it will easily fit in most kitchen cabinets.

It features a lead-free construction and all the components are made of stainless steel. The built-in 1/8 HP motor compressor doesn’t require maintenance and it uses an HFC-134 refrigerant which is environmentally friendly. The unit is sealed tightly, so it runs quietly.

With a power of 155 watts and a tank of 0.7 gallons, the unit can deliver up to 1.3 gallons of water per hour. It can chill the water to a temperature of 50 degrees Fahrenheit.

The installation is pretty simple. Since it generates heat, when installed in a cabinet, is best to consider an external venting. The outer tubes measure ¼ inches and it requires a water pressure of 14.5 PSI. The unit is warranted for 1 year.


  • Once the water is fully chilled, the motor shuts off
  • Features a lead-free construction
  • Equipped with an Eco-friendly refrigerant
  • Quick and easy installation


  • You can’t adjust the water temperature
  • Can’t be used with a RO system


The unit features a compact design and it runs quietly. The installation is simple and the construction is durable.

Characteristics That Matter and Need to Be Considered

So, you’ve decided to buy a water chiller. Most people opt for these systems as they deliver cold, refreshing drinking water in a matter of seconds. Water chillers, just like the water filtration systems, have certain features and characteristics that you need to take into consideration before buying one. As you’ve seen in our comparison table, we paid attention to the design, performance, and features. In the following lines, we will detail some of the most important aspects that may help you in choosing your own water chiller.

  • Design – How much space do you have available?: the best way to figure out if the system you want to buy will fit under the sink is to simply measure the free space. Once you determine how much space you have available it’s time to look for the systems that match measurements. All the units selected by us were specially designed for installing them under the kitchen sink cabinet or other tight places. Therefore, they are compact and lightweight. Their height is pretty similar but there are some differences in terms of width and depth. For example, Iceberg CMI 01 features a width of 16.5 inches while Chiller Daddy CHL-501 is only 8 inches wide. However, the latter model has a depth of 16 inches while Express Water PC2000 is approximately 7 inches deep. Therefore, in the end, all of them occupy pretty much the same space. The most lightweight model is Chiller Daddy CHL-501 which weighs 23.75 pounds and the heaviest one is EverCold WIC400S. This one weighs 32 pounds.
  • Flow rate – How much water is supplied in an hour?: the flow rate is another important aspect you need to consider. The more water the unit supplies, the better. If you have a numerous family, then it’s best to look for a system with a high flow rate. From this point of view, the best option is Iceberg CMI 01. This chiller can supply approximately 3 gallons of cold water per hour. This means you can fill your glass with cold water in a matter of seconds. Express Water PC2000 is another great option from this point of view as it can supply around 2.3 gallons of water per hour. Chiller Daddy CHL-501 and EverCold WIC400S have a flow rate of 1.32, respectively, 1.75 gallons per hour. They are ideal for small houses.
  • Cold water outlet temperature – Adjustable or not?: some systems allow you to adjust the water temperature according to your preferences. This means you can drink the water as cold as you want it to be within a preset range. All our systems feature an adjustable water thermostat to control the water temperature but Express Water PC2000 is less user-friendly from this point of view. It has no knob outside, so you have to remove the front cover of the unit for adjusting the temperature.
  • Materials – What’s the best option?: usually, when it comes to water chillers, the best material is stainless steel. This helps extend the life of the system while protecting it from rust. EverCold WIC400S features a powder-coated galvanized steel cabinet and all the waterways are made of stainless steel. At the same time, Chiller Daddy CHL-501 comes with a stainless steel exterior and internal parts. Iceberg CMI 01 features a stainless steel water tank while the casing is made of powder coated cold rolled steel.
  • Features – An added convenience: each manufacturer includes a set of features that are meant to improve the functionality and ease of use of the product. Therefore, you should pay attention to the most important features and characteristics the chiller comes with. Among the most impressive ones are the automatic restart motor cut-off (EverCold WIC400S) and the pressure reducing valve and shock arrestor (Iceberg CMI 01). Additionally, Express Water PC2000 comes with nice operating lights and an attractive design.
  • Warranty – A commitment of the manufacturer: warranty plays an important role for a customer. In case the product you buy has manufacturing defects, the customer service will either repair or replace the chiller. Unfortunately, we couldn’t find any details on the warranty provided by Express Water for their chiller. EverCold WIC400S and Chiller Daddy CHL-501 are covered by a period of 1 year, while Iceberg CMI 01 comes with a longer warranty, namely 2 years.

Frequently Asked Questions

Does the Chiller Need Ventilation?
Considering the fact that the chiller is installed under the sink or in a small cabinet, it requires ventilation. Therefore, the manufacturers recommned at least a fan for ventilating the hot air delivered by the chiller. Otherwise, the cooling capacity of the chiller will be affected.

How Exactly Does a Chiller Work?
You may think that a chiller creates cold but it doesn’t. Instead, it removes heat from the water and it transfers it to the air. This concept is known as the refrigeration process. In general, chillers have 2 sides: a process water side and a refrigerant side. The heat is picked up from the process and then it is transferred to refrigerant side. Furthermore, the refrigerant side removes the heat to air.

Can a Chiller Filter the Water?
In general, a water chiller can only chill the water. In this case, you will need a separate water filtration system to remove the impurities from the water. Most models can be used with other drinking water systems, so you can install them both. Nevertheless, there are some models that can also filter the water, so you won’t have to a buy a separate filter.

How Loud Is a Water Chiller?
Most chillers emit noise of around 55 decibels when the cabinet doors are open and around 35 dB when they are closed. The maximum sound level is achieved when the fan is on – that is when the unit cools the water or when it overheats.

How Much Does the Water Temperature Change After the Installation of a Chiller?
Normally, once you install a chiller, the water output will be around 40 degrees Fahrenheit. Of course, the temperature may vary from one unit to another unit.


Although there aren’t many water chillers available at this moment, the ones selected by us promise excellent performance. They are compact, easy to use, and are made of good quality materials. Moreover, if they don’t offer filtering options, they are compatible with water filtering systems so you will be able to get only safe tap water.

Best Overall Under Sink Water Chiller: EverCold WIC400S

This reliable system will deliver you up to 1.75 gallons of cold water per hour, therefore it is an excellent choice for large households or even offices. It is compact and easy to install, as it comes with quick-connect fittings. It uses R134a refrigerant, which is environmental-friendly and safe for your health. Moreover, the maximum power consumption is 103 watts, therefore it is energy-efficient. The cabinet is made of galvanized steel and is powder-coated for extra durability. Not to mention that the high-quality construction is covered by a 1-year warranty against eventual manufacturing flaws.

Editor’s Choice: Chiller Daddy CHL-501

It can deliver up to 1.32 gallons of water per hour with a temperature that can vary between 42 and 54 degrees Fahrenheit, according to your taste. The water reservoir has a capacity of 0.6 gallons, therefore it is more suitable for small to medium households or offices. The housing is made of stainless steel and can successfully resist rust and corrosion, so you can rest assured that your investment will last for a long time. Furthermore, it is compact enough to fit under a sink where a filtering system has been previously mounted.

Best Under Sink Water Chiller with Filter: Franke CT-200

Although considerably more expensive than most models in this top, this is a high-end chiller that offers not only exceptional chilling performance but a filtering system, designed to remove contaminants and improve the taste of water. The tank has a capacity of 3 gallons, which makes it suitable for large families. It is easy to install, as it comes with color codes for every sink line. Nevertheless, you should check if you have enough space for it under your sink, as it is pretty bulky.

Best Large-Capacity Under Sink Water Chiller: Iceberg CMI 01

It is the best choice for large households, as it features an impressive 3 gallons per hour flow rate and multiple temperature settings to meet everyone’s taste. The power consumption doesn’t go higher than 75 watts, so it won’t overcharge your electricity bill. Not to mention that it can be used in all areas, no matter how extreme the temperatures get, as it has been specially tested for this purpose and successfully passed all the tests.