An experienced R290 heat pump supplier for installers should provide more than equipment and a technical datasheet. Installers also need accurate selection data, clear hydraulic and electrical information, commissioning guidance, technical training and dependable spare-parts support.

EXINDA supplies R290 monoblock air-to-water heat pumps for European residential, retrofit, multi-family and selected light-commercial applications.

We work with distributors, regional partners, heating contractors and qualified installers to support projects from initial selection through installation, commissioning and after-sales service.

What Should Installers Expect From a Heat Pump Supplier?

The real value of a heat pump supplier becomes clear when the project is not completely standard.

Before selecting a product, installers may need answers to questions such as:

• Which model can meet the building load at the local design temperature?
• How much capacity remains at low outdoor temperatures?
• Can the heat pump operate with existing radiators?
• What leaving-water temperature is required?
• Is the electrical supply suitable?
• Is a buffer tank needed?
• How should domestic hot water be integrated?
• What controls and external connections are available?
• Which technical documents are available?
• How are commissioning and fault diagnosis supported?
• Which spare parts should be stocked locally?

EXINDA reviews these requirements against the applicable product data rather than recommending a heat pump based only on nominal capacity or property area.

Where Can Installers Use EXINDA R290 Heat Pumps?

EXINDA R290 monoblock heat pumps are designed for hydronic heating, cooling and domestic hot-water systems.

Typical European applications include:

• New detached homes
• Existing-home renovations
• Gas- or oil-boiler replacement
• Radiator heating systems
• Underfloor heating
• Fan-coil heating and cooling
• Domestic hot-water production
• Villas and larger homes
• Multi-family residential projects
• Selected light-commercial buildings

The correct model and system configuration depend on the building load, outdoor design temperature, heating emitters, required water temperature, domestic hot-water demand and electrical supply.

What Information Is Required for Heat Pump Selection?

Installers should provide project-specific information before requesting a final model recommendation.

Preliminary selection may be discussed without complete data, but final selection should be based on a reliable building heat-loss calculation.

Why Nominal Capacity Is Not Enough

A heat pump advertised as 9 kW or 15 kW does not necessarily provide that capacity under every operating condition.

Installers should evaluate:

• Heating capacity at the required outdoor temperature
• Capacity at the required leaving-water temperature
• COP at the stated test condition
• Seasonal efficiency
• Minimum and maximum output
• Water-flow requirements
• Electrical input
• Defrost behaviour
• Backup-heater requirements
• Sound performance
• Available controller functions

Performance at A7/W35 should not be used to predict performance automatically at colder outdoor temperatures or higher water temperatures.

For cold-climate and radiator-retrofit projects, model selection should be based on the relevant low-ambient and high-water-temperature data.

Can an R290 Heat Pump Work With Existing Radiators?

Yes, an R290 air-to-water heat pump can operate with existing radiators when the system is assessed correctly.

The installer should check:

1. Building heat loss at the local design temperature
2. Radiator output at the proposed flow and return temperatures
3. Required leaving-water temperature
4. Heat pump capacity at that operating condition
5. Available water flow
6. Hydraulic balancing
7. Zone-control strategy
8. Supplementary-heating requirements

A boiler system may have been designed around higher water temperatures than a heat pump system. If radiator output becomes insufficient at the new operating temperature, selected radiators may need to be enlarged.

Reducing building heat loss or increasing radiator surface area can also help the heat pump operate at a lower water temperature and potentially improve efficiency.

What Heating Systems Can Be Supported?

Depending on the project and selected model, EXINDA R290 heat pumps can be considered for integration with:

• Existing radiators
• Low-temperature radiators
• Underfloor heating
• Fan-coil units
• Domestic hot-water cylinders
• Buffer tanks
• Hydraulic separators
• Circulation pumps
• Mixing valves
• Multiple heating zones
• Supplementary electric heaters
• Selected hybrid systems
• Cascade systems using applicable models

The qualified installer or project designer remains responsible for the overall system design. EXINDA provides product-side data and application support based on the project information supplied.

When Should an Installer Consider a Buffer Tank?

A buffer tank may be useful when the system has:

• Low total water volume
• Several small heating zones
• Frequent zone-valve operation
• Rapid changes in demand
• A risk of insufficient minimum flow
• Short compressor operating cycles
• A need for hydraulic separation
• Limited available energy during defrost

However, a buffer tank should not be added automatically to every installation.

The decision should consider minimum water volume, minimum flow, zone controls, heat-pump modulation and the overall hydraulic design.

R290 Installation Considerations

R290 is propane and is classified as a flammable refrigerant. Although a monoblock heat pump contains its refrigerant circuit within the outdoor unit, installation must still follow the current product manual and applicable local requirements.

Installers should consider:

• Required installation clearances
• Outdoor-unit position
• Air intake and discharge space
• Service access
• Defrost-water drainage
• Protection from snow, ice and flooding
• Avoidance of unsuitable enclosed locations
• Safe routing of water and electrical connections
• Location of doors, windows, drains and ignition sources where applicable
• Transportation and handling requirements
• Local requirements for equipment containing R290

Installation requirements vary by model, country and site. The applicable EXINDA manual and local regulations should be checked before installation begins.

Technical Documents for Installers

A professional R290 heat pump supplier for installers should provide technical information before equipment reaches the project site.

Depending on the selected EXINDA model, available information may include:

• Technical datasheets
• Model-specific performance tables
• Heating and cooling capacity data
• COP and seasonal-performance information
• Operating-envelope information
• Sound data
• Product dimensions
• Water-flow requirements
• Hydraulic connection information
• Electrical wiring diagrams
• Controller instructions
• Installation, operation and maintenance manuals
• Fault-code lists
• Recommended accessory information
• Technical submittals
• ErP documentation where applicable
• CE conformity documentation
• Heat Pump KEYMARK information for applicable models
• Spare-parts information

Certification and performance documents must be checked against the exact model. Certification applying to one model or capacity should not be presented as covering the entire product range.

Installers can review the available range on the EXINDA R290 heat pump manufacturer and supplier page.

Commissioning Support for Installers

Correct commissioning helps confirm that product selection, hydraulic design, electrical installation and controller settings work together.

Before Startup

The installer should:

• Confirm the exact installed model
• Check the electrical supply
• Inspect the hydraulic circuit
• Confirm adequate water flow
• Clean the system and strainers
• Vent air from the water circuit
• Check system pressure
• Confirm freeze protection
• Inspect electrical terminals
• Check sensor locations
• Verify outdoor-unit clearances
• Check condensate and defrost drainage

During Startup

The installer should:

• Select the correct operating mode
• Check inlet and outlet water temperatures
• Confirm circulation-pump operation
• Review controller parameters
• Set the appropriate heating curve
• Test domestic hot-water priority
• Check supplementary-heater settings
• Record operating data
• Check for active fault codes

After Startup

The installer should:

• Record the final parameter settings
• Explain controller operation to the customer
• Confirm maintenance requirements
• Provide the user manual
• Document the commissioning result
• Establish the local service contact
• Explain the warranty-reporting procedure

Installers should contact the technical support team before changing advanced parameters or replacing major components.

Installer Training

Training allows contractors to understand the product before completing their first customer installation.

Depending on the cooperation arrangement, training can cover:

• EXINDA R290 product range
• Model-selection principles
• Hydraulic-system requirements
• Electrical connections
• Controller operation
• Heating-curve adjustment
• Domestic hot-water settings
• Cascade control for applicable models
• Commissioning procedures
• Fault-code interpretation
• Routine maintenance
• Spare-parts identification
• Warranty-case documentation

For regional distributors and agents, EXINDA can also support the development of local installer knowledge through product documents and technical training.

Troubleshooting and Technical Support

Effective troubleshooting begins with complete project information.

When reporting a problem, installers should provide:

• Product model
• Serial number
• Project location
• Installation date
• Fault code
• Photos or videos
• Hydraulic schematic
• Outdoor temperature
• Inlet and outlet water temperatures
• System pressure
• Available water-flow information
• Controller settings
• Relevant electrical measurements
• Actions already taken

This helps distinguish between a product fault, system-flow problem, installation issue, sensor fault, controller setting or hydraulic-design problem.

Replacing components before completing basic diagnosis can increase downtime and hide the original cause.

Spare-Parts Support

Installers and distributors should establish a spare-parts strategy before developing a large local installed base.

A local service package may include selected:

• Temperature sensors
• Flow-related components
• Controllers and displays
• Communication cables
• Contactors and relays
• Pumps or pump components
• Fan motors
• Electrical protection components
• Valves
• Seals
• Installation accessories

The recommended spare-parts package should be based on the selected models, installed quantity and local service responsibilities.

Work involving the refrigeration circuit must be carried out by appropriately qualified personnel and in accordance with requirements applicable to R290 equipment.

How EXINDA Supports Installer Projects

The objective is to identify unsuitable applications before delivery and give the installer the information needed to prepare the system correctly.

Opportunities for Distributors and Regional Agents

EXINDA is developing its European R290 heat pump market through distributors, regional agents and qualified HVAC partners.

An installation company may be suitable for distribution cooperation when it has:

• Established local heating-market experience
• A qualified installation team
• Local technical-support capability
• Spare-parts and after-sales capacity
• Existing contractor or dealer relationships
• A clear target territory
• Realistic annual sales planning
• Capacity to promote and support the EXINDA brand

Territory, product range, sales targets, technical responsibilities and after-sales arrangements are evaluated before establishing regional cooperation.

This model helps ensure that local installers and end users receive accessible product, installation and service support.

European R290 Heat Pump Project References

Multi-Family Residential Project in Italy

EXINDA R290 heat pumps were used for heating, cooling and domestic hot-water production in a multi-family residential project.

View the EXINDA R290 project in Italy

Radiator Heating Project in Germany

This project demonstrates how an R290 air-to-water heat pump can be applied in a residential building with a radiator-based hydronic system.

View the luxury villa heat pump project in Germany

Boiler Replacement Project in the United Kingdom

This residential retrofit integrated an EXINDA R290 heat pump with radiators, domestic hot water and the existing building system.

View the boiler-to-R290 heat pump retrofit project

UK Retrofit and MCS Guidance

UK contractors can review the relationship between product selection, retrofit requirements, technical support and model-specific MCS status.

Read the MCS-certified R290 heat pump guide

Additional installation, project and HVAC articles are available in the EXINDA HVAC Blog.

Frequently Asked Questions

Is EXINDA an R290 heat pump supplier for installers?

Yes. EXINDA supplies R290 monoblock air-to-water heat pumps through distributors and regional partners while supporting installers with product selection, documentation, commissioning guidance, training and spare parts.

Can installers purchase EXINDA heat pumps directly?

Supply arrangements depend on the country, project quantity and existing regional distribution structure. EXINDA may introduce the installer to an authorized local partner where applicable.

What information is required for heat pump selection?

Installers should provide the project location, building heat loss, outdoor design temperature, heating emitters, required water temperature, domestic hot-water demand and available electrical supply.

Can an EXINDA R290 heat pump replace a gas boiler?

It may be suitable for boiler replacement, subject to building heat loss, radiator output, required water temperature, electrical capacity and supplementary-heating requirements.

Can EXINDA R290 heat pumps work with existing radiators?

Yes, provided the radiators can deliver the required room heating at the proposed flow and return temperatures.

Does EXINDA provide installation documents?

Technical datasheets, manuals, wiring information, controller instructions and other model-specific documents are available for applicable products.

Are all EXINDA R290 heat pumps KEYMARK certified?

Certification status must be confirmed for the exact model. A certificate applying to selected models should not be interpreted as covering every capacity or configuration.

Does EXINDA provide commissioning support?

EXINDA can provide product-side controller and commissioning guidance. Overall system design and local compliance remain the responsibility of the qualified project team.

Are spare parts available?

Spare-parts packages and replacement components can be planned according to the selected models, installed quantity and local after-sales structure.

Can an installation company become an EXINDA distributor?

Yes. Installation companies with local sales, technical service and market-development capability may apply for regional distribution or agency cooperation.

Work With EXINDA

If you are an installer or heating contractor evaluating an R290 heat pump project, please provide:

• Company name and country
• Project location
• Building type
• Calculated heating load
• Outdoor design temperature
• Required water temperature
• Heating-emitter type
• Domestic hot-water requirement
• Electrical supply
• Required quantity
• Project schedule

If you are interested in becoming an EXINDA distributor or regional agent, also include:

• Target territory
• Current sales channels
• Installer network
• Technical-service capability
• Estimated annual volume
• Local market-development plan

Email:
info@exindagroup.com