What is Glycol? How is it used in a Chiller? | JC Younger

Most people know glycol as an ingredient in antifreeze. But what many don’t know is that glycol is also used as a refrigerant in beer chillers. In this post, we’ll take a look at what glycol is and how it’s used in a chiller. We’ll also discuss some of the benefits of using glycol for chilling your beer. So, if you’re curious about glycol and how it can help improve your brewing process, keep reading!

What is Glycol?

Glycol is a colorless, odorless, and sweet-tasting (but non-caloric) fluid. It’s most familiar to people as an ingredient in antifreeze for automotive engines and mechanical cooling systems. Glycol has the ability to absorb and release large amounts of heat without changing its temperature. This makes it ideal for use in refrigeration applications such as beverage chillers.

Glycol is an important heat transfer fluid in industrial chiller applications. In addition to offering excellent heat transfer parameters, ethylene glycol tends to discourage algae growth in heat transfer equipment. Many homebrewers utilize glycol chillers in their home breweries allowing them to successfully make top-quality ales and lagers year-round. But what exactly is a glycol chiller, how is it used it in the brewery industry and why would you want one? JCY looks into this and more in our latest blog post…

What Is a Glycol Beer Chiller?

A glycol beer chiller is a device that cools the hot wort (water extract from mashing barley malt) exiting the brew kettle, and then transfers it to fermenters for yeast propagation.

Brewery chillers are typically composed of two coils: copper tubing for transferring heat away from the boiled wort, and plastic tubing for carrying cooled liquid back to the chilled water source. Glycol fluid is pumped through both coils in order to exchange heat with its surroundings as it travels back and forth between the two coils.

If you’re looking for an excellent way to cool your homebrew, consider picking up one of these babies! Glycol chillers are invaluable tools in commercial breweries because they allow brewers to rapidly move lots of beer through their processing pipelines without worrying about even the smallest temperature increase.

But for homebrewers, glycol chillers are all about precise temperature control. Being able to adjust the temp of the wort (the term for unfermented beer) in steps that range in 5 degrees or less means you can control fermentation temps with much greater accuracy. This is very useful when making styles like lager which require precise, controlled temperatures throughout fermentation and lagering (cold storage).

How is Glycol Used in a Chiller?

Most people know glycol as an ingredient in antifreeze. But what many don’t know is that glycol (also known as ethylene glycol) is also used as a refrigerant in beer chillers.

Glycol chillers allow homebrewers to rapidly cool their worts below boiling temps to complete water condensation and convert starch into sugar; chilling also slows down yeast activity allowing time for accurate pitch rates and preventing possible off-flavors caused by over-pitching.

Additionally, glycol chillers let you take the heat out of your beer-in-progress rapidly enough to prevent potential wort caramelization (burning). This is especially important during runoff when hot wort first hits the counterflow chiller. It can also be helpful for bringing down wort temperatures at the end of a long brew day in order to pitch yeast without having to wait several hours – glycol chillers help brewers save time and water! Glycol chillers are also convenient because they allow you to cool your beer outdoors or indoors with no need for ice baths or messy “swamp coolers”.

Glycol Chiller for Your Brewery

We frequently update our inventory of glycol units, glycol beer line chillers, and all other JCY Industrial Chillers.

View & Purchase Chillers Here

JC Younger’s Approach to Glycol Chillers

We stand behind every chiller we sell. When you purchase a JCY propylene glycol beer chiller, we offer a warranty and provide excellent customer service to ensure you get the most out of your brewery glycol beer system. You are also provided the best price on liquid cooling glycol. We offer Dowfrost or DOW SR1 propylene glycol. We always recommended a 50 percent glycol to water mixture, for any outdoor chiller or if the glycol beer chiller temperature is lower than 50 degrees.

Our glycol chillers are capable of maintaining exact beer temperature year round, so if you’re looking for a great way to cool your beer without having to worry about it losing temp, then buying a commercial glycol chiller might be for you!

Important Points About Using Glycol

Getting the ratio of water to glycol right is crucial to maintaining your chiller at peak performance. Getting the glycol concentration ratio correct ensures that the freezing point is lowered enough and works smoothly in your system. That ratio will depend on several factors and should be hashed out with an expert on your machine. Once you have the ratio right, your machine will work smoothly for a long time.

It’s also important to use the right type of glycol for your chiller. Substituting automobile antifreeze or other random chemicals can clog the heat exchanger and interfere with the proper working of the chiller.

Should I keep extra Glycol On Hand?

Now that we know why you want glycol in your chiller, it’s time to ask how much you should have around. Since your chiller running low on glycol can cause problems with the machine, you will want to keep the right percentage of glycol/water in storage for your regularly scheduled chiller maintenance program. A few more gallons than what you use for maintenance can also be kept around for emergencies, such as leaks or the need to do a deep flush of the system. Having backup glycol on the premises means that the ratio and product in your chiller are always the right one for your machine, no matter the circumstances.

Purchase Glycol from JC Younger

JC Younger Industrial Chiller Specialists

The JCY Advantage

J.C. Younger is a family-owned business with over 60 years of customer service experience. We offer a variety of brewing accessories including stainless steel beer tanks, brite tanks, cooling towers, air-cooled chillers, glycol chiller installation, process chillers, water-cooled chillers, They rent chillers for a wide variety of commercial and industrial applications and they service what they sell.

JC Younger is proud to offer glycol chillers as a way to improve your business’s efficiency and bottom line. Our chillers are designed with your needs in mind, and our team of experts can help you select the perfect chiller for your unique application. Contact us today to purchase a glycol chiller from JC Younger, and start enjoying the benefits of this innovative technology!

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Master Refrigeration Licensed | In Memoriam in Heaven


General Manager

Sam graduated from Dunwoody College with a degree in HVAC Service, and started out working in the resident side of work. After many years in the residential side of work, Sam took a chance back in 2018 to work in the commercial side of hvac with Jc younger. Since started working with them, Sam has been streamlining Jc younger to make the service side quicker at getting customer back to cooling right away. He always puts the customer needs first, giving them great customer service, and getting them back cooling right away. When Sam is not at work he enjoys hitting up breweries around the area, going up to the cabin, and doing remodeling projects. He also enjoys going out to lake of the woods for some good walleye fishing.In his free time he enjoys taking his grandmother out for meals, fishing and spending time with girlfriend and dog Sara.



Sandy has been in the background of JCY since a baby, growing up playing on chiller systems in the large 12,000SQFT pole shed JCY stores units in. Sandy started working at a young age doing simple tasks like sweeping, painting, organizing Copper fittings and other small tasks. In 2005 Sandy started his 4 year degree at Dunwoody College and graduated in 2007.

During his schooling their he also started his apprenticeship under his fathers supervision. The training consisted of installs of glycol piping in the field, building first chiller and assisting with Chiller service repairs. In 2006 he started learning the in and outs of breweries, and has been JCY’s brewery specialist since then. A challenge he took on was glycol piping a 30 bbl brewery by him self and completed that task in less than 20 day with 16 hour shifts.
In his free time he enjoys taking his grandmother out for meals, fishing and spending time with girlfriend and dog Sara.