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Dutch insulation company adjusts its website following an ACM request

Dutch insulation company Isoprofs has adjusted the information on its website about energy saving. Isoprofs claimed that cavity-wall insulation saves consumers 30 to 50 percent on their energy bills. The adjustment was made after the Netherlands Authority for Consumers and Markets (ACM) had informed Isoprofs that this claim was insufficiently substantiated. Isoprofs appeared more than willing to adjust the information.

ACM had received indications about Isoprofs suggesting that the promised savings of 30 to 50 percent were not always realized in practice. Furthermore, similar firms usually advertise savings of up to 30 percent, which is in line with estimates of Milieu Centraal, an independent organization offering the Dutch public practical information about environmental issues.

Protecting people against misleading practices

ACM calls on people and businesses to report similar situations by going to  As consumer authority, ACM protects people against misleading practices, including those found in markets related to the energy transition. People and businesses must be able to rely on information about, for example, energy savings to be true. ACM takes action by reminding businesses of the rules, and, in case of a violation, by imposing fines or orders subject to periodic penalty payments.


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