Efficiency through integrated heat pump control
Residential heat pumps show how environmental goals become real through application-ready technology. Our control intelligence brings together controllers, user interfaces, variable-speed drives, electronic expansion valves and sensors to manage the entire unit as one coordinated system.
Heat pump performance depends on the way every component works together. CAREL solutions coordinate the compressor, refrigerant circuit, fans and electronic expansion valve, simplifying system design while improving overall unit performance across heating, cooling and domestic hot water production. This integrated approach helps reduce complexity inside the application. Programmable controllers, precise superheat control, fan and pump modulation, defrost optimisation and variable-speed compressor management work together to support stable operation in different load and climate conditions.
Ready for natural refrigerants
Natural refrigerants are changing the design of residential heat pumps. We support applications using low-GWP refrigerants such as R290 with controllers, sensors, electronic expansion valves and variable-speed drives designed for advanced heat pump architectures. Dedicated control functions and refrigerant leak detection help address the efficiency and safety requirements of R290 applications. This makes the transition to natural refrigerants more manageable, supporting sustainable home comfort without compromising control precision.
Faster development with STone
Development time matters when heat pump technologies need to evolve quickly. STone, CAREL’s development environment, supports software configuration, testing and customisation through dedicated applications and reusable function blocks.
The same ecosystem helps support the heat pump lifecycle from design and validation to commissioning, diagnostics and maintenance. By working across hardware and software, CAREL helps simplify development processes and reduce the time needed to bring new solutions to market.
STone Virtual Loop uses digital twin technology and mathematical models to reproduce the behaviour of a real thermodynamic unit in a virtual environment. This allows control software to be tested before working on the physical heat pump. Earlier validation helps identify issues sooner and reduce the time and resources required for laboratory testing. For development teams, digital twin technology creates a more flexible way to refine control strategies and improve software reliability before field deployment.
Simple commissioning and maintenance
Commissioning becomes easier when configuration and diagnostics are available directly in the field. Bluetooth® connectivity and the APPLICA app allow technicians to configure the heat pump from a smartphone, using guided procedures for unit setup and service activities.
Operating data, alarms and diagnostic information support faster maintenance and more effective troubleshooting. This gives installers and service teams quick access to the functions needed to manage the unit with confidence throughout its lifecycle.
Integrated partnerships for complete heat pump solutions
Cooperation with selected partners helps turn component compatibility into complete system value. CAREL and Grundfos offer an integrated, ready-to-use solution based on plug-and-play LIN communication between the CAREL controller and the Grundfos circulator.
Direct exchange of operating information simplifies pump integration and supports more coordinated management of the hydronic circuit. This partnership approach reflects the way CAREL brings control intelligence inside the application, connecting technologies that need to work together from the start.
