ISDE: Ventilatie woningeigenaren Grant

About this grant

The ISDE ventilation subsidy for homeowners (Investeringssubsidie duurzame energie en energiebesparing) provides a fixed grant of EUR 400 for installing a new ventilation unit in a Dutch owner-occupied home, in combination with one or more insulation measures. The subsidy targets energy savings and improved indoor air quality in older homes. Eligible units fall into three types: a central CO2-controlled extract fan with at least two CO2 sensors and a capacity above 125 m3/h; a central balanced ventilation unit with heat recovery (WTW) with at least 85% efficiency and 125 m3/h capacity; and a decentralised balanced WTW unit with at least 80% efficiency and 80 m3/h capacity. Units must be new, not second-hand, and ideally listed on the official meldcode list. The measure must be installed by a (building) installation company on or after 1 January 2026, and the applicant must not perform the installation personally. The home must have been built before 1 January 2019, or the environmental permit must have been applied for before 1 July 2018. The subsidy application must be submitted within 24 months of installation, and it can be filed together with the insulation application. Homeowners in Groningen and certain North Drenthe municipalities (Aa en Hunze, Noordenveld, Tynaarlo) who own a home are excluded from ISDE insulation and ventilation subsidy and are directed to SNN Measure 29 instead. Applicants need DigiD (app or SMS verification) to apply. Required documents include the meldcode or technical documentation, an invoice and proof of payment, installation date, homeowner address, and installer details including KVK number.

Eligibility

Dutch homeowners (woningeigenaren) who install a new ventilation unit on or after 1 January 2026 through a (building) installation company, in a home built before 1 January 2019 or with an environmental permit applied for before 1 July 2018. The ventilation measure must be combined with one or more insulation measures. Second-hand or used products are not eligible. Owners of homes in Groningen and the North Drenthe municipalities of Aa en Hunze, Noordenveld and Tynaarlo are excluded from this ISDE scheme for owner-occupied properties. Applicants must hold DigiD. The applicant may not carry out the installation themselves.

How it's scored

Not applicable. ISDE is an entitlement-based subsidy: applications that meet the technical and procedural conditions receive the fixed amount, with no competitive scoring or panel review described on the page.

Key requirements

• ✓Applicant must be a homeowner in the Netherlands
• ✓Ventilation subsidy must be combined with one or more insulation measures
• ✓Applications accepted from 2026 up to and including 31 December 2030

Frequently asked questions

How much funding does Rijksdienst voor Ondernemend Nederland (RVO) offer?

ISDE: Ventilatie woningeigenaren offers $440.

Who can apply for ISDE: Ventilatie woningeigenaren?

Eligibility covers organisations in NL; individual. See the eligibility criteria above for the full conditions.

Relevant sectors

About this sector

Energy efficiency funding covers building retrofits, industrial process upgrades, heat recovery, efficient equipment and demand reduction. It arrives as grants for audits and capital works, as support schemes run by agencies and utilities or as public tenders for retrofit and energy services. Applicants usually need a baseline of current energy use and a measured saving.