Heat Interface Unit HIU Baypayo

Heat Interface Unit (HIU) Heating-Cooling Solutions

Heat Interface Unit: Advanced Apartment Heating Technology

Heat Interface Unit (HIU) is a next-generation apartment heating and domestic hot water solution designed for central heating, district heating and communal energy systems.

A Heat Interface Unit connects an individual apartment to a central energy system and provides controlled delivery of heating and domestic hot water to the end user.

Baypayo develops and manufactures Heat Interface Units, Heat Substations and apartment heating solutions for different residential applications, including:

• Underfloor heating systems
• Radiator heating systems
• Indirect heating systems
• Domestic hot water systems
• Heating and cooling applications
• 8-pipe HIU systems
• 9-pipe HIU systems
• Heat metering
• Smart temperature control
• Online prepaid energy systems
• Building automation
• Remote meter reading and software integration

Baypayo's approach goes beyond manufacturing a conventional heating substation. The company combines mechanical engineering, heat metering, electronic control, software, smart energy management and after-sales service in one integrated technology platform.

This makes Baypayo Heat Interface Unit technology suitable for modern residential buildings, apartment complexes, high-rise developments, district heating projects and international housing projects.

Heat Interface Unit?

A Heat Interface Unit (HIU) is a compact heating interface installed in an individual apartment or dwelling and connected to a central heating or district heating network.

Instead of installing an individual boiler in every apartment, the central energy source supplies thermal energy through a primary heating network.

The HIU receives this energy and controls its distribution according to the apartment's heating and domestic hot water requirements.

Depending on the system design, an HIU can provide:

• Apartment space heating
• Domestic hot water
• Individual temperature control
• Heat metering
• Hot water metering
• Flow control
• Temperature control
• Smart room thermostat integration
• Building automation
• Remote monitoring
• Energy management

In international markets, the same type of product may also be called a:

Heat Interface Unit, HIU, Apartment HIU, Flat Station, Heat Substation, District Heating Substation or Apartment Heat Station.

Baypayo develops these technologies for residential central heating applications.

Heat Interface Unit Product Range

Baypayo manufactures and develops different Heat Interface Unit configurations according to the requirements of the building and heating system.

The main Baypayo HIU solutions include:

Underfloor Heating HIU

Designed for low-temperature underfloor heating systems.

Radiator Heat Interface Unit

Designed for apartment heating systems using radiators.

Indirect Heat Interface Unit

Designed with heat exchanger separation between primary and secondary circuits.

8-Pipe Heating and Cooling HIU

Designed for projects requiring both heating and cooling functions.

9-Pipe Heating and Cooling HIU

Designed for more comprehensive heating, cooling and domestic hot water applications.

The correct configuration, capacity and number of connections should always be selected according to the project's hydraulic and thermal design.

Underfloor Heating Heat Interface Unit

The Baypayo Underfloor Heating Heat Interface Unit is designed for residential projects where underfloor heating is used as the primary indoor heating system.

Underfloor heating operates differently from conventional radiator systems.

It generally requires controlled water temperature, suitable flow rates and accurate room temperature management.

The Baypayo underfloor heating HIU can be configured to support:

• Underfloor heating circuits
• Temperature control
• Room thermostats
• Actuators
• Motorised valves
• Heat meters
• Domestic hot water
• Smart control systems
• Energy monitoring

This makes the system particularly suitable for modern apartments, residential complexes and new-build housing projects.

With the correct hydraulic design, the HIU can provide the interface between the central heating network and the apartment's low-temperature heating system.

Radiator Heat Interface Unit

The Baypayo Radiator Heat Interface Unit is designed for apartments using radiator-based central heating.

Radiator heating systems require appropriate flow temperature, differential pressure, hydraulic balancing and heat transfer capacity.

Baypayo develops radiator HIU solutions according to the technical requirements of the project.

The system can incorporate:

• Radiator heating
• Domestic hot water
• Heat metering
• Hot water metering
• Room thermostat
• Motorised valves
• Temperature sensors
• Automatic control
• Smart energy management

Baypayo's product range includes radiator-based 6-pipe Heat Interface Unit / Substation configurations with 35 kW, 50 kW and 65 kW capacity options.

Capacity selection should be based on calculated heating and domestic hot water demand rather than apartment floor area alone.

Indirect Heat Interface Unit

The Baypayo Indirect Heat Interface Unit is designed for systems where the primary heating circuit and the apartment heating circuit need to be hydraulically separated.

The separation is achieved through a heat exchanger.

This configuration can be particularly useful where the primary and secondary systems operate under different hydraulic or operating conditions.

An indirect HIU can include:

• Plate heat exchanger
• Control valves
• Temperature sensors
• Flow control
• Pressure control
• Heat meter
• Room thermostat
• Actuators
• Domestic hot water control

The exact configuration is determined according to the project's hydraulic design and technical specifications.

As a manufacturer, Baypayo can develop and configure indirect Heat Interface Unit solutions according to project requirements.

8-Pipe Heat Interface Unit

Modern residential developments increasingly require both heating and cooling.

For these projects, Baypayo develops 8-Pipe Heat Interface Unit solutions designed to manage more complex heating and cooling requirements.

An 8-pipe configuration can be designed according to the project's requirements for:

• Heating
• Cooling
• Domestic hot water
• Primary flow and return
• Secondary circuits
• Control
• Energy measurement

The exact connection arrangement depends on the hydraulic design of the building.

An 8-pipe HIU can therefore be considered for residential developments where heating and cooling are required through a central energy system.

9-Pipe Heat Interface Unit

The Baypayo 9-Pipe Heat Interface Unit is designed for projects requiring a more comprehensive heating, cooling and domestic hot water interface.

A 9-pipe configuration can accommodate additional hydraulic connections required by complex central energy systems.

Typical applications may include:

• Residential towers
• Luxury apartments
• Large housing complexes
• Mixed-use developments
• Central heating and cooling systems
• District energy projects

The number of pipes is not by itself an indicator of product quality.

The correct configuration must be determined according to the project's heating, cooling, domestic hot water and hydraulic requirements.

Baypayo's advantage is the ability to develop different configurations as a manufacturer and technology developer.

High-Quality Heat Interface Unit Technology

An HIU is not a short-term building component.

Once installed, it is expected to operate reliably for many years.

For this reason, the quality of the components and the overall engineering design are extremely important.

Baypayo Heat Interface Units are developed with attention to:

• Component quality
• Heat exchanger performance
• Valve reliability
• Sensor accuracy
• Sealing performance
• Thermal insulation
• Mechanical connections
• Electronic control
• Service accessibility
• Long-term spare part availability

Baypayo's manufacturing and engineering capabilities allow the company to continuously improve its products according to project requirements and technological developments.

Baypayo 5-Year Warranty

Baypayo provides a 5-year warranty for its Heat Interface Unit solutions.

A warranty is an important factor when selecting an HIU manufacturer, but long-term technical support is equally important.

An apartment heating system may remain in operation for many years after the original installation.

Therefore, customers should consider not only:

“How long is the warranty?”

but also:

“Can I obtain technical service and spare parts after the warranty period?”

Baypayo's service and spare parts infrastructure is designed to support the long-term operation of its products.

This approach makes the Baypayo HIU a long-term heating solution rather than simply a product supplied at the construction stage.

Baypayo Service Network

The service network behind an HIU is one of the most important considerations for residential projects.

A large apartment building may contain dozens or hundreds of individual HIUs.

If a technical problem occurs, fast diagnosis and service are essential to protect occupant comfort.

Baypayo provides technical support for its heating, metering and energy management products through its service infrastructure.

The Baypayo service approach covers the complete product lifecycle:

Manufacturing → Installation → Commissioning → Maintenance → Repair → Spare Parts → Technical Support

This integrated structure is particularly valuable for large residential projects.

Heat Interface Unit Installation and Commissioning

Correct installation and commissioning are essential for reliable HIU operation.

Before installation, the project should confirm:

• Required heating capacity
• Primary flow temperature
• Primary return temperature
• Differential pressure
• Heating flow rate
• Domestic hot water demand
• Hydraulic connections
• Heat meter configuration
• Control system
• Room thermostat requirements

After installation, the system should be checked and commissioned.

Typical commissioning procedures include:

1. Checking all hydraulic connections.
2. Checking valves and filters.
3. Performing leakage and pressure tests.
4. Checking electrical connections.
5. Checking sensors.
6. Checking temperature readings.
7. Checking flow rates.
8. Testing heating operation.
9. Testing domestic hot water.
10. Testing room temperature control.
11. Checking heat meter operation.
12. Confirming system performance.

Correct commissioning is essential because even a high-quality HIU can perform poorly if the primary network is incorrectly balanced or the system is not commissioned correctly.

Heat Interface Unit Maintenance

Regular maintenance helps protect the long-term performance of an HIU.

Depending on the system and operating conditions, maintenance may include inspection of:

• Heat exchangers
• Control valves
• Sensors
• Actuators
• Filters
• Heat meters
• Hot water meters
• Electrical components
• Thermostats
• Seals
• Hydraulic connections

Water quality, operating temperature, pressure and system design can influence maintenance requirements.

Baypayo's service approach is designed to support customers throughout the operating life of the product.

Heat Interface Unit Spare Parts

Long-term spare part availability is an important advantage when selecting a Heat Interface Unit manufacturer.

Typical HIU spare parts may include:

• Control valves
• Actuators
• Sensors
• Filters
• Heat meters
• Flow meters
• Thermostats
• Seals
• Pumps
• Control components
• Heat exchanger components
• Connection components

A service-friendly design allows individual components to be inspected and replaced when necessary.

This can reduce maintenance time and extend the useful service life of the complete heating system.

Baypayo supports its products with technical service and spare part solutions designed for long-term operation.

Smart Heat Interface Unit with User Temperature Control

Today's residential users expect greater control over their heating systems.

A modern HIU should not simply deliver heat.

It should allow the user to interact with the heating system.

Baypayo Heat Interface Unit technology can be integrated with:

• Room thermostats
• User interfaces
• Temperature sensors
• Actuators
• Motorised valves
• Heat meters
• Smart control systems

The user can therefore have greater control over the desired room temperature and heating demand.

This creates a transition from conventional heating to user-controlled smart apartment heating.

The result is greater comfort, better control and improved visibility of energy consumption.

Baypayo Online Prepaid Heat Meter Integration

One of Baypayo's important technology advantages is the integration of online prepaid heat meter systems with heating and energy management solutions.

The combination of:

Heat Interface Unit + Heat Meter + Online Prepaid System + Software

creates a more comprehensive apartment-level energy management platform.

Depending on the project configuration, users can monitor their energy consumption and manage their account through digital systems.

Online payment and prepaid energy management can also be used in residential developments where building managers require greater control over energy consumption and account management.

This makes Baypayo's approach different from a conventional mechanical HIU manufacturer.

Baypayo Software Integration

Baypayo develops not only mechanical heating equipment but also technologies for heat metering, meter reading, energy management and software integration.

This allows the Heat Interface Unit to become part of a larger digital energy management ecosystem.

Depending on the project, the system can integrate:

• Heat meters
• Water meters
• Online prepaid meters
• Remote meter reading
• User accounts
• Consumption data
• Heat cost allocation
• Online payment
• Building management
• Energy monitoring

For large apartment complexes, this digital infrastructure can significantly simplify energy management.

Heat Interface Unit and Energy Management

An HIU combined with heat metering provides individual apartment energy visibility.

Instead of treating the entire building as one energy consumer, the system can measure energy at apartment level.

This allows:

• Individual consumption monitoring
• Energy analysis
• Heat cost allocation
• User account management
• Remote meter reading
• Digital reporting
• Energy management

Baypayo's combination of HIU + heat meter + software creates a complete solution for modern residential energy management.

Baypayo: Manufacturer and Technology Developer

One of Baypayo's strongest advantages is that it is a manufacturer and technology development company, rather than simply a trading company.

Baypayo's product ecosystem covers:

• Heat Interface Units
• Heat meters
• Water meters
• Meter reading systems
• Online prepaid systems
• Heating controls
• Valves
• Automation
• Energy management software

This allows different technologies to be designed to work together.

For project developers and mechanical contractors, working directly with a manufacturer can also provide advantages in:

• Technical support
• Product development
• Project configuration
• Spare parts
• Service
• Product customisation
• Software integration
• Long-term technical assistance

Baypayo Heat Interface Units for European Markets

Baypayo develops heating and energy management technologies for international markets.

European residential heating projects increasingly focus on:

• Energy efficiency
• Individual energy measurement
• Smart controls
• District heating
• Central heating
• Low-temperature heating
• Heat pumps
• Digital energy management
• User comfort

Heat Interface Unit technology fits naturally into these requirements.

Baypayo's product portfolio is therefore suitable for international residential projects where apartment-level heating control and energy measurement are required.

Baypayo HIU Solutions for Russia and Eurasian Markets

Central heating and district heating are important components of residential energy infrastructure in many Eurasian markets.

Depending on the project design, Baypayo Heat Interface Units can be considered for:

• Apartment complexes
• Residential developments
• Central heating projects
• District energy systems
• New housing developments
• Heating renovation projects

The final product configuration should always be selected according to local technical requirements, heating network conditions and project specifications.

Baypayo Export and International Market Experience

Baypayo's heating, metering and energy management technologies are developed with international markets in mind.

The company has an export infrastructure covering 26 countries, including European markets and Turkic states, supporting the international distribution of Baypayo technologies.

International customers can benefit from a manufacturer that combines:

Product development + manufacturing + technical support + spare parts + software + energy management

within one technology ecosystem.

This is particularly important for international residential projects where long-term technical support is a major purchasing consideration.

Why Choose Baypayo Heat Interface Unit?

When purchasing an HIU, the product specification is only one part of the decision.

The manufacturer behind the product is equally important.

Baypayo provides:

Manufacturer Support

Baypayo develops and manufactures its own heating and metering technologies.

High-Quality Products

The HIU product range is developed with attention to component quality, reliability and long-term serviceability.

5-Year Warranty

Baypayo provides a 5-year warranty for its HIU solutions.

Service Network

Technical service and after-sales support are important parts of the Baypayo product strategy.

Spare Parts

Long-term spare part support helps maintain the system throughout its operating life.

Smart Temperature Control

Room thermostats, sensors, actuators and user interfaces can provide apartment-level temperature control.

Heat Meter Integration

Heat metering can be integrated with the apartment heating system.

Online Prepaid Energy

Baypayo online prepaid technologies can connect energy consumption with digital account management.

Software Integration

Metering, energy management and software systems can work together as part of a complete digital platform.

International Experience

Baypayo has an export infrastructure covering 26 countries, including European and Turkic state markets.

Baypayo Heat Interface Unit Product Family

Baypayo HIU SolutionMain ApplicationUnderfloor Heating HIULow-temperature underfloor heatingRadiator HIUCentral radiator heatingIndirect HIUHeat exchanger separated systems8-Pipe HIUHeating and cooling systems9-Pipe HIUAdvanced heating, cooling and hot water systemsSmart HIUUser temperature and energy controlMetered HIUApartment-level heat measurementOnline Prepaid HIU SystemDigital energy and account management

The final capacity, connection arrangement and component selection should be determined according to the engineering design of each project.

Baypayo Heat Interface Unit for Residential Projects

Baypayo HIUs are suitable for a wide range of residential applications, including:

• Apartment buildings
• Residential complexes
• High-rise buildings
• Luxury residences
• New housing developments
• District heating projects
• Central heating systems
• Mixed-use developments
• Student accommodation
• Large-scale housing projects

For large developments, standardised apartment HIU technology can simplify installation, commissioning, maintenance and spare parts management.

Baypayo HIU: From Heating Equipment to Smart Energy Platform

The modern Heat Interface Unit is evolving.

It is no longer simply a mechanical connection between a central heating network and an apartment.

With the integration of:

HIU + Heat Meter + Smart Thermostat + Online Prepaid System + Software + Remote Meter Reading

the apartment heating system can become part of a complete digital energy management platform.

This is the technology direction developed by Baypayo.

The user receives greater control.

The building manager receives better energy data.

The service team receives better diagnostic information.

The developer receives a complete heating and energy management solution.

Baypayo Heat Interface Unit: Long-Term Heating Technology

A successful apartment heating system requires more than a high-quality product.

It requires:

Engineering

Manufacturing

Correct installation

Commissioning

Heat metering

Temperature control

Software

Maintenance

Service

Spare parts

Long-term technical support

Baypayo combines these elements within its Heat Interface Unit technology.

From underfloor heating and radiator systems to indirect HIUs, 8-pipe and 9-pipe heating and cooling solutions, Baypayo develops configurations according to the technical requirements of modern residential projects.

With 5-year warranty, long-term service support, spare parts availability, smart temperature control, heat meter integration, online prepaid energy technologies and software integration, Baypayo offers more than a conventional apartment heating substation.

It offers a complete technology ecosystem for modern residential energy management.

Baypayo – Heat Interface Unit Manufacturer

For developers, mechanical contractors, distributors and international project partners looking for an Apartment Heat Interface Unit, Heat Substation, Flat Station, Radiator HIU, Underfloor Heating HIU, 8-Pipe HIU or 9-Pipe HIU, Baypayo provides manufacturer-based heating technology backed by engineering, service and digital energy management solutions.

Baypayo Heat Interface Unit — Smart heating, individual control, advanced metering and long-term technical support.