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Hybrid or all-electric heat pump in a Dutch house

Updated 2026-09-15 · Netzy B.V., Eindhoven

A hybrid heat pump works alongside your gas boiler and is often the right step for an older Dutch house that is not yet fully insulated. All-electric is realistic once the shell is well insulated. Insulate first, then size the heat pump to the lower heat demand. An air conditioner or multi-split is not a heat pump for central heating.

Why we do not start with the heat pump

A heat pump sized for an uninsulated house is bigger, more expensive and runs less efficiently. After insulation the same house needs less capacity, so the investment shrinks.

How Netzy tells you in advance what is technically feasible

Before anyone visits, we measure the roof, facade and floor areas of your specific house from the national 3D building model and public registers (BAG, EP-Online). From those areas we calculate the heat demand and, per measure, what it does to the label.

Every assumption gets a certainty percentage and a source. If a key fact is missing (year of construction, floor area or house type), we give no advice rather than filling in an average.

The order is fixed: insulate the building shell first, then install. Ventilation is decided together with the insulation, because once ducts are closed off, heat recovery ventilation is usually no longer possible.

Frequently asked questions

Do I need new radiators for a hybrid heat pump?

Usually not. A hybrid system works with the existing radiators; the boiler takes over on the coldest days.

Is a heat pump always worth it?

No. With low gas use and a well-tuned boiler the case can be marginal. We calculate it per house and say so when it is not worth it.

Netzy calculates what is technically feasible and what it costs, and explains the schemes. We do not give mortgage advice and do not broker mortgages. What you personally can borrow, and at what rate, is assessed by a mortgage adviser or lender. Label outcomes are route indications, never a guarantee.
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Questions in English: contact@netzy.nl · +31 85 401 8481

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