The easiest solution to install for heating in winter and cooling in summer. The air-to-air heat pump captures heat from the outside air and delivers it through wall-mounted splits — perfect as a supplement, in light renovations or for a living space, with no major works and no water circuit.
The figures that matter for a quality air-to-air heat pump, installed by our teams. Concrete benchmarks, not marketing.
The seasonal coefficient of performance shows the energy delivered per kWh consumed. A quality air-to-air heat pump returns 3.5 to 4.5 kWh of heat for 1 kWh of electricity — far more than an electric convector.
In summer, the unit reverses and cools. Cooling efficiency (SEER) reaches 6 to 8 on the better models — summer comfort without installing a separate air conditioner.
Recent wall-mounted splits are very quiet indoors (from 19 dB(A)). The outdoor unit is positioned to limit any nuisance to neighbours, in line with the regulations.
Modern inverter models keep heating in cold weather, down to about −15 °C. During prolonged severe cold, a supplementary heat source remains useful in poorly insulated homes.
A mono-split for one room, a multi-split (up to 5 units on a single outdoor unit) for several rooms. We size the system to the areas and orientation.
No radiators or pipework to redo: just a refrigerant line between the units. Installation is fast and minimally invasive, ideal for renovations.
* Indicative values for standard-range models. Real-world performance depends on the model, the sizing and the insulation of the home — confirmed during the technical survey.
No heat pump is perfect for every project. Here, honestly, is where air-to-air excels and where another solution is a better fit.
It shines where you want heat and cold quickly, without heavy works. A few cases where it stands out:
Efficiently heat and cool a living room, lounge or open space, where a single well-placed unit is enough to cover the volume.
Glazed rooms overheat in summer and struggle to heat in winter. The air-to-air heat pump solves both at once, without touching the central heating.
When redoing a water circuit is too much, a multi-split heats several rooms from a single outdoor unit — ideal in shared buildings.
For complete central heating with domestic hot water, take a look at the air-to-water heat pump. And if your land allows it, geothermal offers the best long-term efficiency.
An apartment heated with direct electric convectors, with steep winter bills and no solution for heatwaves. We installed a 3-unit multi-split in a single day: efficient heating in winter, cooling in summer, all controlled from a smartphone.
5.0/5 · 3verified reviews
« Châssis, panneaux et pompe à chaleur en une seule fois : on a eu un seul devis, un seul planning et zéro paperasse pour les primes. Le résultat est impeccable et notre facture d'énergie a chuté. On ne pensait pas que ce serait aussi simple. »
« Passage du mazout à une pompe à chaleur air-eau. Chantier propre, anciens radiateurs conservés. La maison est mieux chauffée pour bien moins cher. »
« PAC air-air réversible installée avant l'été. Confort été comme hiver, et le SAV répond vite. Très satisfait du suivi. »
The air-to-air heat pump excels at simplicity and cooling. Depending on whether you want hot water, central heating or the best efficiency, another type may suit you better.
| Critère | Air-to-air heat pumpVous êtes ici | Air-to-water heat pumpVoir la gamme → | GeothermalVoir la gamme → |
|---|---|---|---|
| Investment | The most affordable | €€€ — mid-range | €€€€ — the highest |
| Central heating (water) | No, forced air | Yes, radiators/underfloor | Yes, radiators/underfloor |
| Domestic hot water | No | Yes, optional | Yes, optional |
| Cooling in summer | Yes, built in | Depends on model | Passive cooling |
| Efficiency (SCOP) | 3.5–4.5 | 3.5–4.8 | 4.5–5.5 |
| Works involved | Light, ~1 day | Moderate | Heavy (drilling/loop) |
| Best for | Supplement, living space, renovation | House, complete heating | New build/heavy renovation, long term |
Complete central heating: radiators or underfloor heating, plus domestic hot water. The go-to choice for the whole house.
Compare with air-to-water →The best efficiency, stable all year round thanks to the heat of the ground. A heavier investment, profitable over the long term.
Discover geothermal →A heat pump paired with your existing boiler: the heat pump handles everyday needs, the boiler takes over in severe cold.
See hybrid →Wallonia or Brussels grant, reduced VAT: what you are entitled to depending on your region and income.
Calculate my grants →Installed price ranges and payback times by heat pump type and your current consumption.
See the prices →An overview of our heat pump solutions in Belgium: types, sizing, grants and installation gathered on one page.
Back to the heat pump guide →The price depends on the number of indoor units, the output and whether it is a mono or multi-split setup. Here are some benchmarks for installed equipment.
See heat pump prices & grants in detail →* Indicative ranges for installed equipment, excluding specific configurations. A costed estimate is provided with your free quote.
Yes. Recent inverter models heat down to about −15 °C outside. In Belgium, they cover most of the season; in a poorly insulated home or during prolonged severe cold, a small supplementary source can remain useful.
Technically, a reversible air-to-air heat pump is an air conditioner capable of heating efficiently. The difference lies in heating-oriented sizing and control: we prioritise heating efficiency (SCOP) as much as summer comfort.
No. The air-to-air heat pump only heats the air. For hot water, you need an air-to-water heat pump, a thermodynamic water heater or a dedicated tank. We guide you according to your needs.
A single well-placed unit is often enough for an open-plan living area. To heat several closed rooms, we install a multi-split (up to 5 units on a single outdoor unit). The number is decided during the survey, based on the areas and layout.
The indoor units are very quiet (from 19 dB(A)). The outdoor unit is more audible: we position and orient it to comply with noise regulations and limit any nuisance to neighbours.
Grants for air-to-air are generally more limited than for air-to-water, but the 6% VAT applies in renovation (homes over ten years old) and some regional grants exist depending on your income. We check your eligibility before the quote.
Free technical survey, precise sizing, grants calculated. Describe your project in under a minute.