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This project is a typical R290 heating heat pump residential application in France. The house is located in France and has a heating area of around 230㎡. Before renovation, the property used a gas boiler as the main heating system, with radiators as the indoor heating terminals.
As the boiler aged, the homeowner started to reconsider the long-term heating solution. The decision was not only about replacing an old unit. It was also about reducing dependence on gas, improving heating stability, and choosing a system that could better match future residential heating trends in France.
After comparing different options, the project selected an 18kW R290 Monobloc heating heat pump to replace the existing gas boiler. The heat pump now serves as the house's main heating source, while the original radiator system remains in use.
*Heating heat pump residential application in France
The main challenge of this project was the existing heating system.
The house was not a new-build property with underfloor heating. It already had a gas boiler and radiators. This matters because radiators usually require a higher water temperature than underfloor heating systems. If a low-temperature heat pump is used without checking the radiator capacity, the result may be slow room heating or poor comfort during colder weather.
For the homeowner, changing all indoor terminals was not the preferred option. It would mean more construction work, higher renovation costs, and a longer installation period. So the real question was clear: could a heat pump replace the gas boiler while keeping the radiator system?
The project had three practical requirements.
First, the heat pump needed enough capacity for a 230㎡ house. A smaller unit could struggle during winter and rely too much on auxiliary heating.
Second, the system needed a high leaving water temperature to work better with radiators.
Third, the installation had to stay simple. This was a renovation project, not a full heating system rebuild.
The 18kW R290 Monobloc heating heat pump was selected because it matched the real conditions of this renovation project. The house already had radiators, so the replacement system needed more than standard low-temperature heating performance.
Higher water temperature for radiators
The original heating terminals were radiators, not underfloor heating. Radiators usually need a higher water temperature to deliver enough heat, especially in older houses. The R290 heating heat pump can provide a leaving water temperature of up to 75℃, making it more suitable for replacing a gas boiler while keeping the existing radiator system.
Better compatibility with boiler replacement projects
In many renovation projects, homeowners do not want to replace all indoor heating terminals. Keeping the radiators can reduce construction work, shorten the renovation period, and control extra costs. The high-temperature capability of the R290 heat pump gives the system more flexibility when working with the original heating layout.
18kW heating heat pump for a house in France
The house has a heating area of around 230㎡, so the heat pump needed enough capacity to support whole-house heating demand. A smaller unit could struggle in colder weather or rely too much on auxiliary heating. The 18kW model provides a more suitable capacity range for this residential heating renovation.
Monobloc structure for easier installation
The project used a Monobloc heat pump. The main refrigerant circuit is integrated inside the outdoor unit, so the installer mainly works with the water-side connection on site. This makes the installation process clearer and more practical for renovation projects.
*Heating heat pump residential application in France
For this case, the main value of the R290 heating heat pump was not only the refrigerant itself. It was the combination of high water temperature, suitable capacity, radiator compatibility, and simpler installation.
Subsidy policy also influenced the homeowner’s decision. In France, many residential heating renovation projects are supported by local incentive schemes, which can make heat pump replacement more attractive than simply installing a new gas boiler.
In this project, the subsidy was not the only reason for choosing an R290 heating heat pump. But it helped the homeowner look beyond the upfront cost and compare long-term heating value, gas price uncertainty, and system upgrade potential.
This makes the project a practical heating renovation heat pump subsidy case in France. It shows how subsidy support, radiator compatibility, and lower dependence on gas can work together in a residential boiler replacement project.
After the renovation, the 18kW R290 heating heat pump replaced the old gas boiler and became the main heating source for the house.
The original radiators were kept. This reduced indoor construction work and avoided a full terminal replacement. For the homeowner, this made the renovation more acceptable. The heating system was upgraded, but the house did not need to be opened up room by room.
In daily use, the system provides more stable heating across the main living areas. The radiators can still work as the heat distribution terminals, while the R290 heat pump supplies the hot water needed for space heating.
The most important improvement is system compatibility. Many homeowners hesitate before replacing a boiler with a heat pump because they worry that the existing radiators may not be enough. In this case, the 75℃ leaving water temperature capability helped reduce that concern. It gave the system more confidence in a radiator-based heating renovation.
The homeowner also reduced dependence on gas heating. This does not mean the exact energy bill reduction should be presented as a fixed percentage. Actual savings depend on insulation, electricity price, former gas cost, room temperature settings, and local weather. A more accurate way to describe the result is this: the project completed a gas boiler replacement with an R290 high-temperature heat pump while keeping the radiator system, creating a cleaner and more stable residential heating solution.
*Heating heat pump residential application in France
The customer feedback focused on two areas.
The first was installation clarity. Since the project used a Monobloc heat pump, the on-site installation was easier to understand than a more complex system redesign. For a renovation project, this helped reduce communication between the homeowner, installer, and product supplier.
The second was confidence in heating performance. Before the replacement, the homeowner was concerned about whether a heat pump could work properly with the original radiators. After the operation, the high leaving water temperature capability became the key reason for confidence. The system did not require a full indoor terminal replacement, yet it could still support radiator heating demand.
This is exactly why R290 high-temperature heat pumps are suitable for many European boiler replacement projects.
This case shows a clear market signal: French residential heating renovation is not just about selling a heat pump. It is about solving a real replacement problem.
Many houses in France and other European markets still use gas boilers and radiators. When these homeowners consider a heating upgrade, they often want three things: lower long-term heating uncertainty, limited indoor renovation work, and a heating system that can still match their existing radiators.
For OEM and private label brands, this means the product line must be practical. A standard low-temperature heat pump may not be enough for every renovation project. An 18kW R290 Monobloc heating heat pump with up to 75℃ leaving water temperature is more relevant for larger houses and radiator-based boiler replacement.
If your brand is developing the French residential heating renovation market, this type of product can help you build a stronger local offer. It gives your sales team a clearer story to tell: not just “R290 refrigerant”, but “R290 high-temperature heating for radiator-based boiler replacement”.
SolarEast supports overseas brands with R290 heating heat pump OEM and ODM solutions for residential heating renovation markets.
For France and other European markets, we can support product selection, private label cooperation, appearance customization, technical documentation, and project-based model recommendations. If your customers are asking for boiler replacement solutions, radiator-compatible heat pumps, or high-temperature R290 Monobloc units, this product direction is worth serious attention.
Send us your target market, heating area, radiator type, required water temperature, certification needs, and preferred product capacity. Our team can help you review the project conditions and recommend a suitable R290 heating heat pump solution before you place an order.
Contact SolarEast to discuss your next R290 boiler replacement product line for the French residential heating market.
