Efficient Infrared Technology

ESHC technology is what sets Welltherm’s infrared heater’s apart from the rest. 

The problem with the majority of infrared heaters is that they do not work as intended. This is especially true at the cheaper end of the market. Where the heating panels do not get hot enough to emit truly effective infrared waves.  This means they are essentially just a hot plate on the wall. Not providing the true infrared effect.

ESHC (Entire Surface Heat Conductor) is an innovative heating technology developed in Germany. Among the users are important biotech companies. 

The special aspect of ESCH heating technology (which is only used on Welltherm infrared heaters) is that more than 70 % of the heater’s heating surface is covered by heating conductors. This results in excellent heat distribution and efficiency. For most other infrared products this value is between 6 % and 23 %. 

More Heat Effective

Basically, the following applies: The larger the proportion of radiation of an infrared heating system, the more efficiently electrical energy (power) will be turned into thermal energy (heat).

Thanks to long-term research and development work, Welltherm have a profound knowledge of heating systems. Due to extensive tests and lab analysis by independent facilities, the radiation factor of infrared can be compared.  


Welltherm Infrared Heater
  • Proportion of heat Radiation: 85 %
  • Heat Transfer Coeffect: 0.6
  • Max Surface Temperature: 107 °C

Competitor 1

  • Proportion of heat Radiation: 74.3 %
  • Heat Transfer Coeffect: 0.51
  • Max Surface Temperature: 95 °C

Competitor 2

  • Proportion of heat Radiation: 62.9 %
  • Heat Transfer Coeffect: 0.44
  • Max Surface Temperature: 91 °C

The level of radiation is calculated from the ratio of the radiation factor in reference to a maximum radiation efficiency of 0.7. The radiation factor was measured by way of a measuring process based on DIN EN 416-2 and IEC 60675. This describes the ratio of radiated infrared power to the electrical power used and is expressed as a percentage value.

Conclusion: With ESHC technology we can save up to 30 % of heating costs compared to other technologies.


The design of the Welltherm ESHC infrared heaters in detail

Its what’s inside that matters. 

The drawing above shows the schematic construction of Welltherm infrared heating systems.

More Insulation Less heat Lost More Efficient  Less Waste

For maximum quality and efficiency, the ESHC heating conductor’s geometry is made from highest-quality stainless steel. While reverse heating circuits reduce unwanted magnetic fields to a minimum.

The heating elements front and back is surrounded by thermally resistant silicone insulation. The use of this leads to optimum heat transfer to the front of the infrared heater, with maximum safety.

With an infrared heater, its important the heat is transferred into the front panel. Heat to the rear of the heater is simply waste. In order to reduce the loss of heat a thermally insulating mat is used to the rear of the panel.

Based on our ESHC heating technology, ESHC+ further develops this technology. Specially developed for all Welltherm metal heaters, ESHC+ heating conductor is fully encased in substrate layers with optimal heat conductivity.

This maximises the heat given off into the room from the front of the heater. The increased insulation on the back of the heating conductor sustainably reduces heat lost from the back. Thanks to EHSC+ technology, all Welltherm metal heaters achieve excellent radiation efficiency values (0.7 – method of measurement based on DIN EN 416-2 and IEC 60675).

Overall: ESHC and ESHC+ heating conductor technologies make Welltherm one of the market leaders in the field of high-efficiency infrared heating for many years.