Air-to-air heat pump price in Belgium in 2026
The air-to-air heat pump (reversible air conditioning) is the most affordable entry point: heating in winter, cooling in summer, fast installation. This guide presents the ranges by configuration — mono-split, bi-split, multi-split — and everything that moves the bill before you even request a quote.
Indicative ranges, grants not deducted.
Air-to-air heat pump price by configuration
Ranges for an air-to-air heat pump supplied and installed, electrical connection and refrigerant lines included. Excludes masonry or false-ceiling work.
| Configuration | 1 indoor unit Mono-split · 1 room | 2 indoor units Bi-split · 2 rooms | 3 to 5 indoor units Multi-split · 3–5 rooms |
|---|---|---|---|
| Mono-split (1 room)Outdoor unit + 1 cassette/wall unit | 1 500 – 3 000 € | — | — |
| Bi-split (2 rooms)Outdoor unit + 2 indoor units | — | 3 000 – 5 000 € | — |
| Multi-split (3–5 rooms)Outdoor unit + 3 to 5 indoor units | — | — | 5 000 – 8 000 € |
Indicative prices incl. VAT, supply and installation included, grants not deducted. The number of indoor units and the power are determined during the free quote. Learn more about the air-to-air heat pump and the all-technologies comparison.
What makes the price of your air-to-air heat pump vary
For the same number of units, two quotes can differ by several hundred euros. Here are the line items that really count.
- Number of indoor units
Each additional indoor unit adds 600 to 1 200 € to the budget (equipment + installation). The choice between mono, bi and multi-split is the first price lever.
- Power (kW)
A 5 kW outdoor unit costs significantly less than a 10 kW one. The power is sized on the area to be treated and the insulation of the home.
- Brand (Daikin, Mitsubishi…)
Premium brands (Daikin, Mitsubishi Electric, Panasonic) command prices 15 to 30 % higher than budget ranges, but offer a higher COP and a 5- to 7-year warranty.
See heat pump brands → - Length of refrigerant lines
Every metre of refrigerant line (copper + insulation) between the outdoor and indoor units adds 30 to 60 €. An installation that is far apart or across several floors increases the cost.
- Location of the outdoor unit
Accessible façade, roof terrace, plant room: accessibility and the fixing (wall bracket, ground support, anti-vibration mount) influence the labour.
- Finish and discretion
Concealed service ducts, casings, recessed indoor units (ceiling cassettes) or high-end design: an aesthetic choice that can add 300 to 800 €.
The grants available for an air-to-air heat pump in Belgium
Grants for the air-to-air heat pump are more limited than for air-to-water, because it does not produce domestic hot water and does not replace central heating. On the other hand, the reduced 6 % VAT remains available in renovation.
Renolution grants — conditional
The Renolution grant can cover the installation of an air-to-air heat pump provided it is installed by a certified installer and meets the efficiency criteria (EER ≥ 3.5). Amount to be confirmed based on your income.
- Certified heat pump installer (recognised Renolution certification)
- EER ≥ 3.5 and SCOP ≥ 3.8 (required for the application)
- Home over 10 years old
- Itemised invoice provided
6 % VAT in renovation
When renovating a home over 10 years old, the supply and installation of an air-to-air heat pump benefit from the reduced 6 % VAT. That is a saving of 150 to 1 200 € depending on the configuration.
- Home for private use over 10 years old
- Invoice issued in the name of the owner-occupier
- Sworn declaration certificate (provided by wendows)
- Applies to supply AND labour
Get your net price in 48 h
We check your eligibility for grants and apply the 6 % VAT straight away: you have nothing to advance.
- We check your entitlements
Region, type of home, age of the building: we identify the applicable VAT and any grants you can claim.
- We size and we cost it
Area, orientation, insulation: we choose the optimal configuration (mono/bi/multi-split) and draw up a detailed quote.
- We install and we certify
Our certified technicians carry out the installation, the refrigerant connection and commissioning. A handover report is given to you.
- We build the grant file
If a grant is available, we prepare the complete file: forms, technical certificates, supporting documents.
Regional grants for the air-to-air heat pump change over time: contact us to find out the exact amount applicable to your address in 2026. For maximum support, the air-to-water heat pump or the geothermal heat pump qualify for larger grants.
A range in 10 seconds
Choose your configuration for a ballpark figure. The free quote remains the only accurate estimate tailored to your home.
Indicative estimate incl. VAT, excluding concealed ducts or masonry work.
What a real quote looks like
A concrete case to make the ranges meaningful — your project will be costed based on your needs and your home.
Indicative example dated 2026, excluding concealed ducts and casings. Request your quote for pricing tailored to your apartment or house.
Dig deeper before deciding
- Air-to-air heat pump Complete guide
Technologies, COP, benefits and limits of reversible air conditioning, all on the pillar page.
See the complete guide → - All heat pump prices Comparison
Comparison of air-to-air, air-to-water and geothermal ranges to choose the technology that fits your budget.
Compare the technologies → - Heat pump consumption Bill
How much an air-to-air heat pump consumes day to day and how to optimise the electricity bill.
Calculate the consumption →
Your questions about the price of an air-to-air heat pump
How much does an air-to-air heat pump cost in 2026 in Belgium?
A mono-split system (1 room) supplied and installed costs between 1 500 and 3 000 €. A bi-split (2 rooms) sits between 3 000 and 5 000 €, and a multi-split (3 to 5 rooms) between 5 000 and 8 000 €, electrical connections and refrigerant lines included.
Does the price include both cooling and heating?
Yes. A reversible air-to-air heat pump heats in winter and cools in summer with the same system. The installed price covers both functions: there is no extra cost to switch from one mode to the other.
Are there grants for an air-to-air heat pump in Belgium?
Grants are more limited than for an air-to-water heat pump. In Belgium, the 6 % VAT applies in renovation (home > 10 years). In Brussels, the Renolution grant may be available under conditions (certified installer, EER/SCOP criteria). We check your situation during the quote.
What is the price difference between mono-split and multi-split?
Each additional indoor unit adds on average 600 to 1 500 € depending on the brand and the power. A bi-split (2 heads) typically costs 1 500 to 2 000 € more than a mono-split of comparable power, because the outdoor unit is more powerful and the refrigerant lines are doubled.
Does the air-to-air heat pump replace central heating?
Not entirely. The air-to-air heat pump heats the indoor air directly, without producing domestic hot water or feeding radiators or underfloor heating. It is ideal as a complement to existing heating or as the main heating in regions with mild winters. For a complete boiler replacement, the <a href="/pompe-a-chaleur-air-eau/" class="font-semibold">air-to-water heat pump</a> is more suitable.
How long does it take to install an air-to-air heat pump?
The installation of a mono-split or bi-split is generally done in a single day. A multi-split (3 to 5 heads) may require 1 to 2 days depending on the complexity of routing the refrigerant lines and the accessibility of the rooms.
Your exact price, costed and net of 6 % VAT
The ranges give the ballpark — the quote gives the figure. Optimal configuration, suitable brand and reduced VAT calculated: a single point of contact, in under a minute.
- Free and no obligation
- 6 % VAT verified and applied
- Costed quote within 48 working hours