Full DC Inverter Control
Inverter control adjusts compressor output to changing residential heating and cooling demand, supporting steadier water temperature control during variable-load operation.
Variable-capacity operation
A full DC inverter split air-to-water heat pump series for residential heating, cooling and domestic hot water. Dedicated R290 and R32 versions help distributors, HVAC contractors and project buyers match different market and system requirements.
Specifications vary by model, operating conditions and target market.
Send your target market, building information and estimated quantity for preliminary model selection.
The series combines full DC inverter control, dedicated R290 and R32 configurations, and heating, cooling and domestic hot water functions for distributors, HVAC contractors and residential project buyers.
Inverter control adjusts compressor output to changing residential heating and cooling demand, supporting steadier water temperature control during variable-load operation.
Variable-capacity operation
One product series is available in dedicated R290 and R32 configurations, helping buyers match refrigerant preferences, market requirements and project specifications.
One series, two refrigerant options
The split air-to-water platform supports residential space heating, hydronic cooling and domestic hot water system design through one coordinated product series.
Three residential functions
The system can be configured with supported underfloor heating, radiators, fan coils and domestic hot water tanks for different residential HVAC layouts.
Multiple terminal-system options
Model selection inputs: target market, design ambient temperature, terminal type, required water temperature and building load.
View Technical SpecificationsThe residential air-to-water heat pump connects with an indoor hydronic unit and supported terminal equipment to provide space heating, cooling and domestic hot water through one coordinated system layout.
Configure the heat pump for underfloor heating and supported radiator systems according to design water temperature and building heating load.
Connect compatible fan coil units for residential cooling where the selected model and system design support cooling operation.
Integrate a compatible hot water storage tank to add domestic hot water production to the residential heat pump system.
For preliminary system selection: provide the building area or heating load, local design temperature, terminal type, required water temperature and domestic hot water demand.
Request a System RecommendationFinal system configuration depends on model selection, terminal type, local climate and project design conditions.
Select the residential heat pump according to building load, local climate, required water temperature and terminal system—not building type alone. The R290 and R32 versions support different residential HVAC project requirements within one product series.
Configure residential heating, cooling and domestic hot water for detached homes according to heat loss, occupancy and preferred terminal system.
Support defined residential zones or multi-unit projects where capacity, hydraulic layout, control strategy and hot water demand are evaluated during system design.
Match low-temperature new-build systems or suitable retrofit projects with the required outlet water temperature, design ambient condition and existing heat emitters.
Compare the reference configuration ranges for the dedicated R290 and R32 versions. Final rated capacity, COP, SCOP, noise and dimensions are confirmed according to the selected model and stated test conditions.
| Refrigerant | R290 |
|---|---|
| Heating capacity range | 5–16 kW |
| Heating outlet water | 20–75°C |
| Cooling outlet water | 5–20°C |
| Heating ambient range | −25°C to +35°C |
| Cooling ambient range | +10°C to +46°C |
| Energy efficiency class | Up to A+++ at 35°C |
| Power supply options | 220–240V 1Ph / 380–415V 3Ph |
| System functions | Heating / Cooling / DHW |
Technical answers for distributors, HVAC contractors and project buyers comparing the R290 and R32 residential air source heat pump series. Final selection should always be based on the target model, climate and hydraulic system.
Select by destination-market regulations, required outlet water temperature, system design and local installation capability. R290 supports water temperatures up to 75°C on applicable models, while the R32 range provides a dedicated configuration for projects specified around R32 refrigerant.
The R290 series can provide outlet water up to 75°C and the R32 series up to 65°C on applicable models and operating conditions. Use the model performance table to verify available capacity at the required ambient and water temperature.
Applicable R290 and R32 models support heating operation down to −25°C. Heating output and efficiency change with outdoor temperature and leaving-water temperature, so low-ambient model selection must use the project design condition rather than nominal capacity alone.
Yes. The series supports space heating, hydronic cooling and DHW operation when connected to the required hydraulic components and hot-water tank. Mode priority and component selection are defined in the system design; do not assume all loads operate simultaneously.
Typical applications include underfloor heating, fan coils, suitable radiators and a domestic hot-water tank. Confirm design flow rate, pressure loss, required water temperature and control logic for each terminal circuit before finalizing the system.
Select capacity from the calculated building heat load at the local design ambient temperature. Then verify output at the required leaving-water temperature, DHW demand, electrical supply and any backup-heater strategy. Building area alone is not sufficient for model selection.
Send the project location, design ambient temperature, calculated heating and cooling loads, terminal type, required water temperature, DHW demand, power supply, hydraulic concept and estimated quantity. This allows the supplier to check both the unit and system configuration.
No. R290 and R32 versions are dedicated product configurations with refrigerant-specific components, controls and safety requirements. Refrigerant must not be changed in the field. Order the version approved for the destination market and project specification.
The OEM scope can include logo and nameplate, exterior branding, controller configuration, packaging, manuals and market-specific documents. Availability depends on the selected model, order quantity, certification scope and destination market.
Provide the target market, required refrigerant, capacity range, power supply, certification requirements, annual or initial quantity estimate, branding files and documentation languages. The configuration, sample requirements, acceptance criteria and production plan can then be confirmed.
Cassky specializes in high-performance heat pump systems and solar energy solutions, providing reliable products and customized services for global distributors, engineering companies, contractors, and brand partners.
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