3 June 2026 · 4 min read
The ISDE heat-pump subsidy in 2026: how it works
By Stefan Douw · Maker of Stekkerkompas
The ISDE (the Dutch sustainable-energy investment subsidy) gives homeowners a contribution toward, among other things, a heat pump. For a (hybrid) heat pump you always get at least 500 euro. The actual amount depends on the type and model: RVO calculates it per device from a fixed list.
The conditions
The heat pump is new, not second-hand. A professional installation company does the install, you may not do it yourself. The home was built before 1 January 2019 (or its building permit was applied for before 1 July 2018). You apply within 24 months of installation, using DigiD. In 2026 applications open on 5 January at 12:00.
What changed in 2026
Split air-to-water heat pumps with a refrigerant charge under 3 kg and a GWP above 750 no longer qualify. That nudges the market toward natural refrigerants such as R290.
What it means for your payback
The ISDE is a direct cut to your investment, so it shortens payback substantially. In the calculator we compute a heat pump's payback after the ISDE, per model. Always check the exact amount for your model at RVO, since the list and the amounts change.
ISDE subsidy by heat pump
€3,250
ISDE subsidy
€7,750
Net price
Per-model amounts from the RVO list. The shown price is before subsidy; always check the current amount at RVO.
Calculate for my situationRun the numbers for your home
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