Heat pump prices in Belgium in 2026
Clear price ranges by technology (air-to-water, air-to-air, geothermal), what drives the bill up or down, and the grants that cover a sizeable share of it. Everything you need to size up your project before even requesting a quote.
Indicative ranges, grants not deducted.
Heat pump prices by technology and output
Ranges for a heat pump supplied and installed, including hydraulic and electrical connection. Excluding adaptation works on the existing heating network.
| Technology | Low output 4–6 kW · flat / compact house | Medium output 8–12 kW · semi-detached house | High output 14–18 kW · detached house |
|---|---|---|---|
| Air-to-air (split)Reversible air conditioning | 4 500 – 6 000 € | 6 000 – 8 000 € | — |
| Air-to-waterThe most installed | 8 000 – 10 500 € | 10 500 – 13 500 € | 13 500 – 15 000 € |
| GeothermalHigh performance | 15 000 – 18 000 € | 18 000 – 22 000 € | 22 000 – 25 000 € |
Indicative prices incl. VAT, supply and installation included, grants not deducted. Exact sizing is determined during the free quote. Technology details: air-to-air, air-to-water, geothermal.
What makes the price of your heat pump vary
At equal output, two quotes can differ by several thousand euros. Here are the items that really weigh in.
- Technology & output
Air-to-air, air-to-water or geothermal, then the output (kW) sized to your heat losses: that is the first price lever.
- Hot water tank
Built into the monobloc unit or separate (200 to 300 litres), the DHW tank adds €1,000 to €2,500 to the budget depending on capacity and brand.
- Heating network
Low-temperature radiators, underfloor heating or fan coil units: adapting the existing network can add €2,000 to €5,000 to the bill.
Heat pump & underfloor heating → - Drilling or collectors
In geothermal, vertical drilling (80 to 150 m) or horizontal collectors account for 30 to 40% of the total budget.
- Electrical connection
Meter rating, dedicated sub-panel, residual-current protection: an item that is sometimes underestimated.
- Soundproofing & location
Anti-vibration mount, acoustic enclosure, distance from neighbours: constraints that can generate extra costs.
Heat pump noise →
The grants that lighten your heat pump
Installing a heat pump to replace a fossil-fuel heating system opens the door to substantial regional grants and reduced VAT. Here are the 2026 benchmarks — we calculate the amount and file the paperwork for you.
Prime Habitation
Grant for replacing an oil or gas heating system with a heat pump, scaled to your income.
- Replacement of a fossil-fuel generator (oil, gas, coal)
- Heat pump with a COP ≥ 3.5 (A++ label or higher)
- Prior home audit required for the highest amounts
Renolution grants
Support for installing a high-performance heat pump, with three income brackets.
- Heat pump for heating or DHW
- Home over 10 years old
- Certified installer and itemised invoice
Get your net-of-grants price, within 48h
We check your eligibility, quote net of grant and handle the paperwork: you pay nothing upfront.
- We check your eligibility
Region, income, current heating type: we identify the grants you can claim.
- We size and cost it
Simplified heat assessment, choice of the right heat pump, quote net of grant.
- We file the paperwork
Forms, technical annexes, decommissioning certificate for the fossil-fuel system.
- We deduct where possible
The grant is taken off your bill, with no cash advance.
In Flanders? The Mijn VerbouwPremie also covers installing a heat pump — ask us for the details for your municipality.
A range in 10 seconds
Pick a technology for a ballpark figure. The free quote remains the only precise estimate.
Indicative estimate, excluding heating-network adaptation.
What a real quote looks like
A concrete case to bring the ranges to life — your project will be costed to your needs.
Indicative example dated 2026, excluding heating-network adaptation. Request your quote for a costing tailored to your home.
Dig deeper before deciding
- Heat pump guide The whole silo
Technologies, COP, sizing and maintenance all gathered on the pillar page.
See the full guide → - Consumption Bill
How much a heat pump uses day to day and how to optimise the bill.
Calculate consumption → - Heat pump grants By region
The grant details in Wallonia, Brussels and Flanders.
Explore the aid →
Your questions about heat pump prices
How much does an air-to-water heat pump cost in 2026?
For a medium-output air-to-water heat pump (8 to 12 kW) supplied and installed, expect between €10,500 and €13,500 in Belgium, hot water tank included. Grants can cover up to €4,000 in Wallonia and up to €4,500 in Brussels.
Is an air-to-air heat pump cheaper?
Yes. An air-to-air heat pump (reversible air conditioning) starts at around €4,500 installed for a single-split and rises to about €8,000 for a multi-split. However, it does not produce domestic hot water and does not fully replace central heating.
Does the price include installation and connection?
Yes. The ranges are for a heat pump supplied, installed and connected (hydraulic and electrical). The quote itemises each line so there are no surprises.
What grants for a heat pump in 2026?
In Wallonia, the Prime Habitation can reach €4,000 for an air-to-water heat pump and €6,000 for geothermal. In Brussels, the Renolution grant goes up to €4,500. In both cases, the amount depends on your income and the type of heating replaced.
Is VAT reduced for a heat pump?
Yes. For renovation of a home over 10 years old, VAT is 6% instead of 21%. That is a significant saving on a €10,000 to €15,000 item. We check your eligibility from the first contact.
How long to recoup a heat pump?
When replacing an oil boiler, the return on investment is generally between 5 and 8 years thanks to fuel savings and grants. With current energy prices, the payback has improved markedly.
Your exact price, costed and net of grants
Ranges give the ballpark — the quote gives the figure. Heat assessment, sizing and grants calculated, a single point of contact. In under a minute.
- Free and no obligation
- 6% VAT & grants calculated and deducted
- Costed quote within 48 working hours