GRETEL French manufacturer was founded in 1974 on a low-inertia central heating process patent thanks to the automatic electric boiler developed by René DUFRESNE.
For the past forty years we have been developing many heating solutions by designing high-performance and easy-to-use equipment that improves the daily comfort of central heating and precisely compensate for the heat loss from each unit.
Our proven quality systems ensure the sustainability and longevity of hot water central heating facilities.
The energy savings are part of our priorities, and we preserve them by focusing our efforts on insulation and offering constructive systems, which yield is close to 100%, associated with control systems and tailored to each of our devices.
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GRETEL is renowned for its expertise in the field of electric boiler, both for the diversity of its range and the quality of its products.
Our expertise extends to many fields of application, heating, hot water production and extra equipment. Our tailor-made solutions combine user-friendliness and reliability.
Our flexibility enables us to respond to any request in order to meet each specific requirement by providing custom-made manufacturing and quality service.

Our values

GRETEL is an independent family business where human values are always highlighted. As a solid business partner, we cooperate with our customers and suppliers in a spirit of confidence in the long term.
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