Hoval antifreeze 'PowerCool DC 924-PXL Konz' withdrawn in Serbia; users told to stop using it

Serbian authorities have ordered an immediate market withdrawal of the antifreeze and heat-transfer fluid "PowerCool DC 924-PXL Konz" produced under the Hoval brand after regulators found it poses a fire hazard when used in certain solar installations.

Officials say the product is sold as a 10-kilogram concentrate intended for use as a solar heat-transfer medium and as an anti-freeze liquid. Tests showed the fluid’s auto‑ignition temperature inside a solar collector is lower than safe limits, meaning that under high ambient temperatures a significant leak or spill could ignite and cause a fire.

What the authorities ordered

The measures introduced in Serbia include a strict ban on making the product available on the market, an order to recall it from end users, and a public safety warning. Consumers who have this specific concentrate were urged to stop using it immediately and to follow official instructions for return or safe disposal.

The regulators emphasised that the fluid can be fitted into solar collectors that use wooden frames for roof installation, which increases the risk if a fire starts. Owners of installations in which this product may have been used are advised to check their systems without delay.

If you suspect you have the product, look for the exact name "PowerCool DC 924-PXL Konz", Hoval branding and 10 kg canisters marked as a concentrate for solar systems and antifreeze use. Contact your supplier, installer or the manufacturer for instructions and do not attempt to dispose of large quantities by yourself without guidance from competent authorities.

Until more information is published by national authorities, users in neighboring countries who source parts or fluids across the border should treat similar products with caution and follow safety notices issued by regulators.

Photo: press material from the event