Are you searching for the best propylene glycol antifreezes?
Users enjoy the non-toxic, food-grade protection that keeps pipes and systems safe from freezing in RVs, boats, and food applications.
Are you looking for the best protection against freezing? Do you need a reliable heat transfer fluid?
Propylene glycol antifreeze is a safe and effective solution. It’s perfect for many uses.
Read on to learn more! Let’s find the perfect product for your needs. We’ll guide you through the best options.
Many users praise propylene glycol antifreezes for their non-toxic nature and ability to protect pipes and systems from freezing. People appreciate it for RVs, boats, and more! Others have found peace of mind using them in food-related applications due to their food-grade certification.
List of Top 10 Propylene Glycol Antifreezes
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Propylene Glycol – 1 Gallon – USP Certified Food Grade – Highest Purity, Humectant, Fog Machine, Humidor & Antifreeze Solution, Contains Zero Alcohol |
This propylene glycol is perfect for homebrewers, cosmetic makers, and industrial users who need a reliable humectant to keep things moist and stable. It works great for fog machines, humidors, and antifreeze solutions in safe, food-grade applications. |
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Century Heat Transfer Fluid – Non-Corrosive, Non-Toxic Propylene Glycol RV Antifreeze for Heating Systems | Concentrated (Requires Dilution) | Recommended by Aqua-Hot, Oasis & Timberline – Yellow 32oz |
This product is perfect for RV owners, campers, and boaters who want to protect their heating systems from freezing during cold trips. It suits anyone using solar, hydronic, or HVAC units in vans and boats for a smooth, reliable winter experience. |
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ComStar ProFrost 40, Propylene Glycol Heat Transfer Fluid Anti-Freeze, Does Not Contain Any Color Or Inhibitor, Prediluted to 40%, Ready to Use, 40% Propylene Glycol, Made in USA, 5 Gal (35-842) |
This propylene glycol anti-freeze is perfect for engineers and teams running chillers, industrial systems, and refrigeration setups in factories or buildings. |
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ComStar ProFrost I-100, Propylene Glycol Anti-Freeze with Inhibitor, 100% Pure Propylene Glycol, Made in USA, 5 Gallon (35-720) |
This product is perfect for anyone needing a reliable and eco-friendly antifreeze. It’s great for chillers, industrial systems, and more. |
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Century Heat Transfer Fluid, Non-Corrosive, Non-Toxic Propylene Glycol RV Antifreeze for Heating Systems | Ready to Use | Recomended by Aqua-Hot, Oasis & Timberline. – Red 1 Gallon |
Perfect for RV owners who want a simple, safe way to stay warm. It’s non-toxic, non-corrosive, and ready-to-use in a 1-gallon bottle for easy winterizing and steady heat. |
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STAR BRITE Premium -100° Boiler System Antifreeze – Propylene Glycol Heating & Cooling Fluid – Made in USA – 1 Gallon (032700) |
Want to keep your heating and cooling systems safe during the cold? This antifreeze is perfect for you! It’s great for boilers and solar systems, and it’s made in the USA! |
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ComStar Freeze Free -100 Degree Propylene Glycol Anti-Freeze Formula, with Corrosion Inhibitor to Protect Pipes in Boilers, Boats, Cottages and More 5 gal (35-755) |
This anti-freeze is perfect for boat owners, cottage dwellers, and anyone with boilers or pipes needing freeze protection. It keeps systems safe and running in cold weather. |
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Century Heat Transfer Fluid, Non-Corrosive, Non-Toxic Propylene Glycol Antifreeze , Marine and RV Winterizer Fluid Freezing Point -50 Fahrenheit. Recomended by Aqua-Hot, Oasis & Timberline – 32oz |
This antifreeze is perfect for RV owners who want to keep their campers warm during cold trips. It’s also ideal for boat owners looking to winterize marine heating systems. |
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ComStar ProFrost CI-30, Propylene Glycol Heat Transfer Fluid Anti-Freeze With Neon Green Color & Inhibitor, Prediluted To 30%, Ready To Use, 30% Propylene Glycol, Made In USA, 5 Gal(35-770) |
This product is perfect for facility managers and HVAC pros who run chillers, cooling loops, and boilers. It is ready-to-use at 30% propylene glycol with a neon green color and a corrosion inhibitor. |
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ComStar Freeze Safe, Propylene Glycol Anti-Freeze with Blue Color & Inhibitor, Prediluted to 80%, Ready to Use Formula, Made in USA, 1 Gallon (35-760) |
ComStar Freeze Safe is perfect for people who work on refrigeration systems and other mechanical setups that need protection from freezing. It suits technicians, plumbers, and facility managers using safe, food-quality fluids in industrial or commercial settings. |
Detailed Reviews
Discover the top 10 Propylene Glycol Antifreezes picked by experts and real users to give you the best info on features, performance, and value. We created this perfect guide so you can easily pick the right one whether you want comfort or affordability. Keep reading to find out which products stand out and why they work so well.
1. Propylene Glycol – 1 Gallon – USP Certified Food Grade – Highest Purity, Humectant, Fog Machine, Humidor & Antifreeze Solution, Contains Zero Alcohol
Propylene Glycol is a clear, thick liquid with no smell. It helps keep things moist and stable in many products. This food grade version meets top safety standards.
You can use it to make fog in machines or in humidors. It acts as an antifreeze to stop freezing in cold spots. Its high purity means it works well in foods and drinks.
USP Certified ensures it is safe and pure. Get a copy of the certificate if needed.
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Perfect For:
This propylene glycol is perfect for homebrewers, cosmetic makers, and industrial users who need a reliable humectant to keep things moist and stable. It works great for fog machines, humidors, and antifreeze solutions in safe, food-grade applications.
Ready to Purchase?
2. Century Heat Transfer Fluid – Non-Corrosive, Non-Toxic Propylene Glycol RV Antifreeze for Heating Systems | Concentrated (Requires Dilution) | Recommended by Aqua-Hot, Oasis & Timberline – Yellow 32oz
Century Heat Transfer Fluid keeps your RV warm in cold weather. This propylene glycol antifreeze protects heating systems from freezing. It works well for solar, hydronic, and HVAC units.
This fluid is non-toxic and non-corrosive. It uses safe ingredients that are gentle on the earth. It winterizes camper vans and boats without harm.
Century Heat has a high boiling point for steady heat transfer. Pick the 32oz yellow bottle that needs dilution. It is recommended by top brands like Aqua-Hot, Oasis, and Timberline.
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Perfect For:
This product is perfect for RV owners, campers, and boaters who want to protect their heating systems from freezing during cold trips. It suits anyone using solar, hydronic, or HVAC units in vans and boats for a smooth, reliable winter experience.
Ready to Purchase?
3. ComStar ProFrost 40, Propylene Glycol Heat Transfer Fluid Anti-Freeze, Does Not Contain Any Color Or Inhibitor, Prediluted to 40%, Ready to Use, 40% Propylene Glycol, Made in USA, 5 Gal (35-842)
Get ready to meet ComStar ProFrost 40. It’s a top-notch anti-freeze coolant. This product is ready to use.
This coolant is made with propylene glycol. It’s designed for many industrial systems.
You can get it in a 5-gallon container. It’s also made in the USA.
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Perfect For:
This propylene glycol anti-freeze is perfect for engineers and teams running chillers, industrial systems, and refrigeration setups in factories or buildings.
It suits maintenance experts keeping cooling loops, solar systems, and heating units running smooth without any hassle.
Ready to Purchase?
4. ComStar ProFrost I-100, Propylene Glycol Anti-Freeze with Inhibitor, 100% Pure Propylene Glycol, Made in USA, 5 Gallon (35-720)
ComStar ProFrost I-100 is a top-quality coolant made from 100% pure propylene glycol with an inhibitor. It works well in many systems like heating, cooling, and solar setups without needing dilution. You can mix it with water in different ratios for various jobs, all while being eco-friendly.
It protects pipes from rust and buildup with its non-toxic formula. Made in the USA, it is safe and comes in sturdy 5-gallon containers.
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Perfect For:
This product is perfect for anyone needing a reliable and eco-friendly antifreeze. It’s great for chillers, industrial systems, and more.
Ready to Purchase?
5. Century Heat Transfer Fluid, Non-Corrosive, Non-Toxic Propylene Glycol RV Antifreeze for Heating Systems | Ready to Use | Recomended by Aqua-Hot, Oasis & Timberline. – Red 1 Gallon
Keep your RV warm with Century Heat Transfer Fluid. It is non-toxic and non-corrosive.
It’s safe for campers and boats. It’s easy to store. It comes in a 1 gallon bottle.
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Perfect For:
Perfect for RV owners who want a simple, safe way to stay warm. It’s non-toxic, non-corrosive, and ready-to-use in a 1-gallon bottle for easy winterizing and steady heat.
Ready to Purchase?
6. STAR BRITE Premium -100° Boiler System Antifreeze – Propylene Glycol Heating & Cooling Fluid – Made in USA – 1 Gallon (032700)
Keep your heating and cooling systems running smoothly with STAR BRITE Premium Antifreeze. This high-quality fluid is designed to protect your systems in even the coldest conditions. It’s the perfect choice for keeping your equipment in top shape.
This antifreeze offers superior heat transfer. It has burst protection down to -100ºF. Plus, it contains corrosion inhibitors.
STAR BRITE is also an environmentally friendly option. It’s made in the USA, ensuring quality. Get yours today!
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Perfect For:
Want to keep your heating and cooling systems safe during the cold? This antifreeze is perfect for you! It’s great for boilers and solar systems, and it’s made in the USA!
Ready to Purchase?
7. ComStar Freeze Free -100 Degree Propylene Glycol Anti-Freeze Formula, with Corrosion Inhibitor to Protect Pipes in Boilers, Boats, Cottages and More 5 gal (35-755)
ComStar Freeze Free is an anti-freeze for pipes. It protects to -100°F and comes in a 5 gal container for boilers, boats, and cottages.
It uses a Safe Propylene Glycol Formula. It is Environmentally Safe. It is Biodegradable.
It includes a Corrosion Inhibitor to guard metal pipes. It is Non-Toxic and Non-Irritating.
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Perfect For:
This anti-freeze is perfect for boat owners, cottage dwellers, and anyone with boilers or pipes needing freeze protection. It keeps systems safe and running in cold weather.
Ready to Purchase?
8. Century Heat Transfer Fluid, Non-Corrosive, Non-Toxic Propylene Glycol Antifreeze , Marine and RV Winterizer Fluid Freezing Point -50 Fahrenheit. Recomended by Aqua-Hot, Oasis & Timberline – 32oz
Century Heat Transfer Fluid provides freeze protection for RVs, campers, and boats. Recommended by Aqua-Hot, Oasis, and Timberline, its freezing point is -50 Fahrenheit.
It is non-toxic and non-corrosive, made with GRAS ingredients. It has a high boiling point and helps heat systems transfer heat well in solar, hydronic, and HVAC units.
We offer a 32oz quart concentrate that needs dilution. There is a 1-gallon ready-to-use option that does not need dilution. Choose the one that fits.
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Perfect For:
This antifreeze is perfect for RV owners who want to keep their campers warm during cold trips. It’s also ideal for boat owners looking to winterize marine heating systems.
Ready to Purchase?
9. ComStar ProFrost CI-30, Propylene Glycol Heat Transfer Fluid Anti-Freeze With Neon Green Color & Inhibitor, Prediluted To 30%, Ready To Use, 30% Propylene Glycol, Made In USA, 5 Gal(35-770)
Introducing ComStar ProFrost CI-30, a premium propylene glycol coolant. It’s prediluted to 30% and ready to use right away.
This fluid fights freeze damage in harsh conditions. It has neon green color for clear leaks. It includes a corrosion inhibitor for safe pipes.
Use it in chillers, refrigeration systems, and solar setups. It stays non-toxic and eco-friendly. Pick it for reliable heat transfer every time.
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Perfect For:
This product is perfect for facility managers and HVAC pros who run chillers, cooling loops, and boilers. It is ready-to-use at 30% propylene glycol with a neon green color and a corrosion inhibitor.
Ready to Purchase?
10. ComStar Freeze Safe, Propylene Glycol Anti-Freeze with Blue Color & Inhibitor, Prediluted to 80%, Ready to Use Formula, Made in USA, 1 Gallon (35-760)
ComStar Freeze Safe is a propylene glycol anti-freeze that keeps your systems running smoothly in cold weather. It comes prediluted to 80% and ready to use right out of the 1-gallon jug, made in the USA for top quality.
This heat transfer fluid is food quality and safe for refrigeration systems. It has a blue color for easy spotting and metal corrosion inhibitors to protect your equipment. ComStar makes over 300 specialty products, leading the way in safe, strong chemicals.
Choose ComStar Freeze Safe for reliable protection against freezing. Pick it up today and keep your gear safe all year round.
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Perfect For:
ComStar Freeze Safe is perfect for people who work on refrigeration systems and other mechanical setups that need protection from freezing. It suits technicians, plumbers, and facility managers using safe, food-quality fluids in industrial or commercial settings.
Ready to Purchase?
Buying Guide
Propylene glycol antifreezes offer great protection against freezing. They work well in many systems like RVs and boats. People choose them for their safe and reliable qualities.
A camper owner shared how Century Heat Transfer Fluid kept his RV pipes safe in freezing weather. He praised its easy dilution and non-toxic formula. Another boat lover used ComStar Freeze Free to winterize his vessel. He enjoyed the corrosion protection and low cost.
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Purity Level: Look for USP certified or food-grade options. These ensure high purity for safe use in foods or systems. Pure versions mix well with water.
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Concentration: Decide between concentrated antifreezes that need dilution. Or pick prediluted ones ready to use. This fits different jobs easily.
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Freeze Protection: Check the lowest temperature the antifreeze protects down to. For example, some go to -100°F. Choose based on your cold weather needs.
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Additives: Some include corrosion inhibitors to protect pipes. Colors like neon green or blue help spot leaks. Avoid options with alcohol for certain uses.
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Toxicity and Safety: Select non-toxic and non-corrosive formulas. They are safer for people and the earth. This matters for food or family settings.
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Uses: Match the antifreeze to your needs like RVs, boats, or HVAC Systems. Some work in food machines or humidors. Pick one for your main use.
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Boiling Point and Heat Transfer: Opt for fluids with a high boiling point. They provide steady heat in systems. This keeps things warm without issues.
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Manufacture: Choose products made in the USA. They often follow strong quality rules. This means reliable performance.
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Volume and Size: Think about bottle sizes like gallons or quarts. Larger ones cost less per unit. Select based on how much you need.
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Recommendations: See if top brands like Aqua-Hot recommend it. These fit well with known systems. User reviews show real-world success.
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Eco-Friendliness: Go for biodegradable and eco-friendly versions. They use green ingredients. This helps protect the planet.