Heat Pump Antifreeze

From £99 - £112

Kensa’s ground heat pumps are designed to be used with a non-toxic antifreeze. Thermox DTX has been specially formulated for use in ground source heat pump systems, delivering a non-flammable and non-toxic solution which utilises the advantages ethylene glycol as opposed to propylene glycol.

Benefits of Thermox DTX heat pump antifreeze

  • Non-toxic. Thermox DTX has been tested and classified as non-toxic by an EPA (Environmental Protection Agency) certified laboratory. DeTox™ prevents Ethylene Glycol from being metabolised (during digestion) into toxic by-products. Tests carried out on Thermox DTX confirmed the toxicity was “so low that it was impossible to determine an LD50 value”.
  • Non-flammable. A safe and reliable alternative to both combustion fossil fuel systems and renewable technologies using flammable refrigerants.
  • Uncompromising heat transfer efficiencies and antifreeze performance. The DeTox™ additive has minimal effect on heat transfer or antifreeze performance. Similar volumes of Thermox DTX or Ethylene Glycol are required to achieve a specific freeze protection.
  • Protective. Thermox DTX is miscible with water in all proportions and can protect ground source heat pump systems down to -50°C depending on concentration.
  • Optimum flow. Thermox DTX has improved heat transfer characteristics, including lower dynamic viscosity and higher thermal conductivity.
  • Corrosion resistant. Thermox DTX contains synergistic corrosion inhibitors to protect metals commonly found in such systems. It has been independently tested and found to meet BS6580 and ASTM D1384 corrosion standards. It also contains scale and biological inhibitors to help prevent fouling, promoting long operational life and high thermal efficiency.
  • Biodegradable. Thermox DTX mixtures are readily biodegradable (90% over ten days) and will not remain in the environment or bio-accumulate.
  • Quality assured. Manufactured in accordance with certified ISO 9001-2008 procedures.

For Orders or Advice: 0345 222 4328


Benefits compared to propylene glycol

  • More efficient heat transfer compared to propylene glycol
  • Easier to pump than propylene glycol, especially at low temperatures
  • Less volume than propylene glycol for the same freeze protection

Antifreeze key information

  • Appearance: Thermox DTX is a green and slightly viscous liquid.
  • Measurements: Available in 25 litres.
  • Density: 1.04—1.15 g/cm3 pH: 7.5 –10.5 depending on inhibitors boiling point: > 100°C
  • Application: As per BSRIA guide BG 29/2012, all pipework systems should be clean and free from biological contamination and debris prior to commissioning. To minimise corrosion air ingress should also be minimized. A pressurised system is best. Determine the total system volume and add Thermox DTX to the system according to the minimum operating temperature required. The minimum dose of Thermox DTX should not be less than 22% of the system volume and the maximum does not normally exceed 60%. Avoid water containing high levels of calcium salts or Chlorides [Cl-].
  • Health & safety: Please refer to the associated Safety Data Sheet. This is available upon request.
  • Shelf life: > 3 years when stored in sealed containers out of direct sunlight.
  • Diluting concentrate: When measuring the percentage concentration of Thermox DTX in solution we recommend the use of a recently calibrated refractometer.
  • Frost Protection °C v/v of Thermox DTX Refractive Index -10 22% 1.356 -15 28% 1.362 -20 33% 1.367 -25 38% 1.372 -30 42% 1.376 -35 46% 1.380

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