Julian Klauza

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What to look out for when buying glycol-based antifreeze for heating, sanitary and cooling systems?

Glycol-based antifreeze is a key element in the effective operation of heating, sanitary and refrigeration systems, especially in conditions where there is a risk of freezing. However, in order to choose the most suitable product and ensure the safety and long-term efficiency of the system, several important factors need to be taken into account.

Chemical composition

First and foremost, it is important to choose a fluid that is suitable for the type of installation in question. It is very important to pay attention to whether the product used will be safe for the health and life of both humans, animals and the environment. Wherever there is a risk of contact between living organisms and glycol-based antifreeze in the event of an installation leak, we recommend the use of environmentally friendly fluids such as Factory EKO D. Propylene glycol-based fluids are safer than those based on ethylene glycol, which is toxic and can be a hazard in the event of a leak. Make sure the product has the appropriate PZH approval and certificates to confirm its safety and quality.

Concentration and form of the liquid

Antifreeze fluids are available in a variety of temperature variants. Procold antifreeze fluids are sold as ready-to-use or as concentrates that require dilution. It all depends on the customer’s choice. The choice of product form and temperature variant should depend on the specific requirements of the system and the temperatures at which it will operate. The manufacturer’s recommendations for dilution ratio should be strictly followed to ensure optimum protection against freezing, corrosion and other deposits.


Heating, sanitary and refrigeration systems are made up of various metals that are susceptible to corrosion. When choosing an antifreeze, pay attention to whether it contains the necessary additives (corrosion inhibitors) to help protect the metal components of the system. Fluids with anti-corrosion additives can significantly extend the life of the system. In addition to inhibitors, antifreeze should contain other types of additives that make the fluid fit for use in installations. If we flood the installations with pure raw glycol we will cause the destruction of the installation. We know from experience that such situations have already occurred if we supply a product of uncertain origin.

System compatibility

Not all antifreeze fluids are suitable for every type of installation. For example, some fluids may not be recommended for use in heat pump bottom source systems and others will not be suitable for use in a solar thermal collector system. Before purchasing, check that the fluid is also compatible with the materials of your system to avoid damage. We at Procold will always advise on the best antifreeze option for your system – procold.pl/en/kontakt-en

Certification and manufacturer recommendations

It is worth sourcing products that have the necessary documentation proving their composition and effectiveness. The length of the guarantee is also a good indicator. It is also good practice to verify the manufacturer’s reputation via a google search, for example.


When purchasing antifreeze for heating, sanitary and cooling systems, it is crucial to pay attention to composition, safety, technical specifications, corrosion protection, system compatibility, manufacturer reviews and certification. Such an informed choice will ensure not only the efficiency of the operation, but also the long-term protection of the system against the negative effects of low temperatures, corrosion and other deposits.

wróć 2024-05-09