Original DIFF® parts
  • An original part can be produced by different manufacturers, according to technical specifications and production standards provided by the boiler manufacturer.
  • The notion of original part is linked to parts manufacturers and not to manufacturers brands or boiler models.
  • The differences between the DIFF® hvac parts and parts distributed by the boiler manufacturers are: the DIFF® packaging and the product label.
Warranted parts
  • The original packaged DIFF® parts are guaranteed by their respective manufacturers . The generic parts are warranted by Isotherm® for a period of 12 months (15 months for the pumps)
  • The use of DIFF® parts cannot legally lead to a disclaimer of guarantee from boiler manufacturers.
Generic parts

  • Isotherm® parts are designed, manufactured and tested by Isotherm. They  have a technic and quality level at least equivalent to the constructor parts they may replace. The improvement of quality and ease of use is constant.
  • These parts are generally different by their shape and/or color, and are stamped with the Isotherm® logo, to avoid confusion between Isotherm® parts and manufacturer parts.
Many advantages for the customers.

Our excellent knowledge of the manufacturer’s offer, of heating spare parts market and our significant purchasing capacity make us strong concurrents in the market : 

  • Our DIFF® parts are certified reliable. 

  • Our customers get significant savings.


We use cookies to provide a better experience. Carry on browsing if you're happy with this, or click here to manage cookies.