About this site and disclosure

ISDE Checker is an independent help site. We are not affiliated with RVO, the Dutch government or any manufacturer.

Data

All product data comes from RVO's public ISDE Meldcodelijst Warmtepompen (the ISDE notification code list for heat pumps), which RVO publishes as open government information (reuse permitted, see RVO open data). The list is fetched again automatically every week. Current version: October 2026 (RVO list updated 5 October 2026, fetched 17 October 2026). No rights can be derived from this site.

How we earn money: bol.com affiliate links

ISDE Checker is a bol.com partner. Every model page (under Models) and every guide has a box called ‘Useful with your heat pump’. It contains search links to bol.com, a Dutch web shop: smart thermostat, P1 meter, radiator fan and draught strips.

These are affiliate links. If you buy something through such a link, we get a small commission from bol.com. You pay nothing extra. The links go to search results on bol.com; we have not tested the products and do not recommend any particular product.

The commission has no influence on the ISDE information. The meldcodes, the amounts and the order of the models come from RVO's list. Apart from this, the site contains no advertising and no other affiliate links. If that changes, it will be stated on this page.

Privacy

We count visits with GoatCounter. GoatCounter works without cookies and does not store personal data: we only see totals, such as the number of visits per page. This site does not set cookies.

If you click a bol.com link, you go to bol.com via partner.bol.com. bol.com may then set cookies to assign the commission. bol.com's privacy policy applies to this.

The site is hosted on GitHub Pages. GitHub records technical data, such as IP addresses, to keep the service secure.