A heat transfer fluid is a glycol-based liquid that carries heat or cold through a system while protecting it from freezing, corrosion and deposits. UAB Boker manufactures professional heat transfer fluid for heating, cooling and heat pump systems – with protection down to -20 °C, down to -40 °C, and a concentrated version that is diluted as required. We supply our products both under our own brand (Boker Thermo Fluid) and as private label orders, wholesale across Lithuania and the Baltic states.
What is a heat transfer fluid and why is it needed
A heat transfer fluid (also known as a heat carrier fluid or glycol fluid) circulates through a closed system and transfers thermal energy between the source and the points of use. The efficiency and longevity of the system depend on its quality: a good heat transfer fluid ensures efficient heat transfer, protects pipework and equipment from corrosion, prevents the system from freezing in winter and inhibits the formation of deposits. It is therefore essential wherever the system may drop below zero or where long-term equipment protection matters.
Where Boker heat transfer fluid is used
- Radiator heating systems – protection against freezing and corrosion.
- Underfloor heating – efficient and even heat transfer.
- Air-to-water heat pumps - Reliable protection against the cold.
- Cooling systems – stable operation and protection against deposits.
Boker Thermo Fluid options
We offer three options so you can choose according to your system's needs and climate conditions. All are supplied in 5 kg packaging.
Thermo Fluid -20 °C
Ready to use. Frost protection down to -20 °C. For standard heating and cooling systems in moderate climates.
Thermo Fluid -40 °C
Ready to use. Frost protection down to -40 °C. For systems that require stronger protection against the cold.
Thermo Fluid Concentrate
For dilution. The level of protection is set by the dilution ratio. For professional use.
| Option | Frost protection | Condition | Packaging |
|---|---|---|---|
| Thermo Fluid -20 °C | down to -20 °C | Ready to use | 5 kg |
| Thermo Fluid -40 °C | down to -40 °C | Ready to use | 5 kg |
| Thermo Fluid Concentrate | by dilution | For dilution | 5 kg |
All options are made from a monoethylene glycol solution, ensuring efficient heat transfer and long-term protection against corrosion and deposits. Suitable for radiator, underfloor heating, air-to-water heat pump and cooling systems.
Concentration dilution table
Dilute the concentrated heat transfer fluid only with demineralised or distilled water, according to the desired level of frost protection:
| Protection down to | Concentrate | Water |
|---|---|---|
| -10 °C | 25 % | 75 % |
| -20 °C | 35 % | 65 % |
| -30 °C | 45 % | 55 % |
| -40 °C | 55 % | 45 % |
| -50 °C | 60 % | 40 % |
Important: use only demineralised or distilled water for dilution – ordinary water may cause deposits and reduce protection.
Why choose Boker heat transfer fluid
- Manufactured in Lithuania – short lead times and direct cooperation with no intermediaries.
- Reliable protection – against freezing, corrosion and deposits, with efficient heat transfer.
- Long-lasting formula – stable properties throughout its service life.
- Different options – -20 °C, -40 °C, and concentrate to suit your needs.
- Wholesale and private label – supply for business clients and manufacturing under your own brand.
Looking for a reliable heat transfer fluid supplier? UAB Boker manufactures heat transfer fluid in Lithuania and supplies it wholesale to heating equipment installers, service centres, and retailers. Private label manufacturing is also available. Contact us for a wholesale offer..
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How does a heat transfer fluid differ from automotive antifreeze?
Although both are often glycol-based, a heat transfer fluid is designed for heating, cooling and heat pump systems, not for car engines. Its additive package is tailored for the long-term protection of stationary systems and for efficient heat transfer.
Which option should I choose – -20 °C or -40 °C?
The choice depends on the climate and the system. The -20 °C option is suitable for standard systems in moderate climates, while -40 °C is for cases requiring stronger protection against the cold. If you need flexibility, the concentrate can be diluted as required.
How do I dilute the concentrated heat transfer fluid?
Dilute the concentrate only with demineralised or distilled water, following the dilution table. For example, protection down to -20 °C requires 35% concentrate and 65% water. Ordinary water is not suitable, as it may cause deposits.
Do you supply heat transfer fluid wholesale?
Yes. We manufacture and supply heat transfer fluid wholesale across Lithuania – to installers, service centres and retailers. We also offer private label manufacturing under your own brand.
Where is Boker heat transfer fluid manufactured?
Heat transfer fluid is manufactured in Lithuania, so we ensure short lead times and direct cooperation with no intermediaries.
Contact us
UAB Boker manufactures a wide range of chemical products – from heat transfer fluid to automotive chemicals and household chemicals. For heat transfer fluid orders, wholesale pricing or private label solutions get in touch with our team..