Hybrid or All-Electric Heat Pump After a Full Home Renovation
After a full renovation, the choice between a hybrid and an all-electric heat pump is a project decision, not a catalogue choice. The answer depends on the dwelling’s heat loss, low-temperature heat emission, domestic-hot-water demand, electrical capacity, available space and the acoustic situation of the outdoor unit. Have these points checked before selecting equipment.
Start with the renovated home
Arrange a room-by-room heat-loss calculation. Check how the renovated envelope, glazing, airtightness and ventilation affect demand, and verify whether the existing emitters can provide sufficient heat at the intended low temperature. Floor heating, low-temperature radiators or other emitters may be suitable, but suitability must be calculated for the actual rooms and finishes.
Assess domestic hot water separately. An all-electric system commonly needs space for a storage tank, while a hybrid system may use the boiler for hot water. The plumbing layout, household routines and available technical space should be part of the design. Also check electrical capacity and the location, access and sound of the outdoor unit.
What hybrid and all-electric mean
A hybrid heat pump combines an electric heat pump with a gas boiler. An all-electric system supplies space heating and domestic hot water without a gas boiler. Neither label guarantees a particular efficiency, cost or level of gas reduction. Project calculations decide the appropriate capacity, controls, operating temperatures and expected use.
A three-phase connection is not a universal legal requirement for every all-electric heat pump. The installer must calculate the actual electrical load and coordinate with the grid operator where necessary. Do not select a system from a generic kilowatt, COP, SCOP, radiator-output or payback figure.
Noise, rules and ISDE
For an outdoor heat pump or air-conditioner at adjoining homes, the Bbl sets a maximum of 40 dB in the applicable assessment situation. This is not a generic 40-to-45 dB boundary range. Assess the proposed position, structure, distance, operating modes and neighbouring rooms using the applicable rules.
The proposed national rule that would have made a more efficient heating system, such as a hybrid heat pump, standard when replacing a boiler from 2026 was cancelled. Do not describe a 2026 replacement obligation.
For 2026 ISDE, a building-installation company installs the unit first and the homeowner applies within 24 months. The qualifying dwelling was built before 1 January 2019, or its permit application was made before 1 July 2018. The current heat-pump subsidy is at least €500, but the amount is model-specific and must be checked in the current RVO meldcodelijst. Certain small split air-to-water systems with refrigerant charge below 3 kg and GWP above 750 no longer qualify from 2026.
A decision sequence
- Calculate room-by-room heat loss and check low-temperature heat emission.
- Assess domestic hot water, technical space, electrical load and outdoor-unit acoustics.
- Compare hybrid and all-electric controls and operating conditions for the actual home.
- Check Bbl noise requirements and any local or building-specific constraints.
- Verify the current RVO model code, eligibility and application deadline before ordering.
Choose the system that fits the measured building and its occupants. A hybrid option can preserve a gas route where the heat-emission or hot-water design is not ready for all-electric operation. An all-electric option can be appropriate when the calculations, emitters, space, electrical supply and noise assessment support it. Treat the heat pump as the integrating layer of the renovation and document the assumptions behind the choice.
Official sources and next checks
Rules and product information can change. Before ordering or applying, check the sources that apply to the address and proposed work.
