Air-to-water heat pump WHL
Air-to-water heat pump WHL
An air-to-water heat pump designed to balance ease of installation and thermal performance
The WHL is a reversible air-to-water heat pump designed to provide heating, cooling, and domestic hot water production within a single system.
Compatible with a wide range of homes equipped with an existing hydronic system, it combines thermal performance, simplified integration, and reliable operation.
Thanks to its monobloc design and Full Inverter technology, it ensures easier installation, particularly in residential heating renovation projects.
A solution designed to enhance home comfort
Simplified installation designed for existing systems
The WHL’s monobloc design simplifies integration into homes equipped with a hydronic heating system.
By integrating multiple components directly into the unit, it helps simplify technical connections and reduce installation work on site.
This approach also helps reduce installation time, especially in boiler replacement projects.
It offers several key benefits:
- reduce the overall footprint of the system
- facilitate integration into existing systems
- simplify boiler replacement
- improve system installation and setup
Stable and quiet operation all year round
Thanks to its Full Inverter control, the WHL gradually adjusts its output, ensuring smooth operation without sudden fluctuations.
This allows to:
- maintain consistent indoor comfort
- reduce start-up cycles and avoid frequent on/off operation
- improve acoustic comfort
- ensure more consistent performance
This ensures efficient heating performance in winter, while providing pleasant cooling in summer.
Compatible with a wide range of systems
The WHL is compatible with most existing hydronic heating systems:
- water radiators
- underfloor heating
- central heating system
It is well suited for:
- gas boiler replacement
- oil boiler replacement
- energy renovation projects
- the modernization of an existing system
WHL or WAO: what’s the difference?
The WHL prioritises ease of installation and versatility, effectively meeting the needs of most homes.
The WAO, using the natural refrigerant R290, stands out with its higher level of performance and its ability to reach higher temperatures, particularly in renovation projects.
Full Inverter
2D" Full DC Twin-Rotary Inverter compressor and variable speed fan
Soft start
No current peaks on the electrical network on start-up
25 - 100%
Speed variation
Smart Defrost
The machine adapts its defrosting according to its last cycle
More silence
Thanks to its Inverter compressor and variable-speed fan motor
-25°C
Minimum operating temperature
2 regulation modes available
- Constant temperature
- Water law according to outdoor temperature
RLB 100
LCD screen
Managing different operating modes
Setting the water temperature
Selecting the heating curve
Weekly programming
Made in France 
6 functions
- Heating
- Cooling
- Domestic hot water (DHW)
- Heating + DHW
- Cooling + DHW
-
Heating +
Cooling + DHW
- Anti-legionella mode (DHW)
- Daily, weekly and holiday programming
6 functions
- Wilo or Grundos circulation pump
- Plate heat exchanger
- Vortex flowmeter/"Calorimeter"
- Electric booster heater and safety
Optional
- Second zone management
- Boiler backup management
- Remote DHW management from 150 to 500 litres
- Additional backup heater
- OperTherm* radio thermostat
Planning a residential heat pump project?
FAQ: WHL residential heat pump
Yes, the WHL can be installed in a wide range of renovation projects, particularly in homes already equipped with a hydronic heating system.
It enables heating system upgrades without requiring a complete overhaul of the existing installation.
The WHL is compatible with several types of hydronic heat emitters:
- water radiators
- underfloor heating
- central heating systems
This compatibility makes integration into existing installations easier.
Yes, the WHL provides domestic hot water (DHW) in addition to heating and cooling.
This allows the system to cover all of the home's thermal needs with a single unit.
The WHL remains efficient even when outdoor temperatures drop.
Thanks to its Full Inverter technology, it continuously adjusts its output to ensure stable operation and consistent thermal comfort, even in winter conditions.
Having your heat pump serviced by a professional is of vital importance, and has even become a legal requirement under the decree of 24 July 2020 and the decree of 29 July 2020. These regulations make biennial servicing compulsory for thermodynamic systems with a rated output of between 4 kW and 70 kW. Maintenance ensures optimal operation and extends the appliance's lifespan.
Most houses can accommodate an air-to-water heat pump, but the efficiency of the system depends on the quality of the house's insulation, the existing heating system and the surface area to be heated. For optimum installation, we recommend good access to outside air, adequate space for installation of the outdoor unit, a suitable heat distribution system (such as radiators or underfloor heating), and effective insulation of the house to maximise the efficiency of the heat pump system.
The installation of an air-to-water heat pump by a professional is eligible for state aid designed to encourage households to replace their old heating systems that rely on fossil fuels with systems that use renewable resources. These include MaPrimeRenov', the CEE scheme, the zero-rate eco-loan, etc.
