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Does ISDE fit your heat pump?

Outdoor unit of an air-to-water heat pump beside a Dutch terraced house

ISDE check

Does ISDE fit your heat pump?

A few light questions. We see whether the national fund fits your situation and look up a notification code if you have one. No euro calculator. RVO decides.

  • Done in 2 minutes
  • The result in plain language
  • Free and no obligation

This is a first indication, not an award. List of August 2026. You cannot derive rights from the Excel download. RVO decides.

When ISDE fits

The core in brief. No amounts; those change by year and live in the year guide.

Your own home

You own the home and you live in it. Renting has a different desk.

Air-to-water

Hybrid or all-electric. An air conditioner that blows warm air is out.

Install first

A building-installation firm fits it. Then you apply, within 24 months.

Code or papers

If the type is on the list, you enter the code. If not, send documents.

Who can apply is on ISDE for homeowners. How to fill it in is in our guide heat pump subsidy.

After the check: apply

The check is step zero. Then this order, from conditions to eLoket.

  1. 1

    Check the conditions

    You live in your own home, the unit is new and it is air-to-water. The home is from before 2019, or the permit from before 1 July 2018.

  2. 2

    Find the notification code

    In the check or on the list. Not on there? Keep the product documents.

  3. 3

    Buy and have it fitted

    Ask for the code on the quote and invoice. Keep proof of payment.

  4. 4

    Apply in eLoket

    DigiD app or SMS. In My RVO choose New application, within 24 months.

  5. 5

    Wait for the decision

    Usually within 8 weeks. Keep the reference number from the confirmation email.

You apply after installation, within 24 months (Dutch). A decision follows within 8 weeks (Dutch).

What SolarFast does for you

We do not file ISDE for you. In the quote we line up brand, capacity and notification code. You file with DigiD. How that works is in heat pump subsidy.

Questions about the check

No. Amounts change by year and by type. Those live in the year guide and in the quote, not as an amount in this check.

No. If it is not on the list you may still apply with product documents. The desk then checks whether the unit meets the rules.

No. You fill in eLoket with DigiD. We supply the papers: brand, type, capacity, invoice.

No. Air-to-air falls outside ISDE. For an air-to-water heat pump, hybrid or all-electric, it can apply.

Then you quickly learn the homeowner desk is not for you. The landlord may have another route.

We use this month's list. The month sits on the search step. You cannot derive rights from that download.

Ready for the next step?

Request a no-obligation quote, book your advice call, or first read how to fill in the application.

To the guide on applying for ISDE

Independently certified

Enphase certification
InstallQ certification
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