HVAC 4.0

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  • HVAC 4.0
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Engineering HVAC 4.0 for smart buildings ​ 

Digitalization changes the way we live, work, and interact. As result it also changes the way HVAC systems are controlled. The trend to develop smart buildings changes the requirements to a buildings heating and/or cooling system as well. Danfoss is part of this HVAC transition and we call this HVAC 4.0. It is all about making buildings more intelligent to become more energy efficient, comfortable and convenient for people who spend around 90% of their time indoors. We do that by developing smart solutions that provide or use HVAC data for Active Energy Management (AEM). Via Building Management Systems (BMS) or Cloud-based solutions. Ultimately the data allows remote commissioning, predictive maintenance and optimized heating, ventilation and cooling systems.


This is where HVAC 4.0 starts

The transition to HVAC 4.0 requires a close cooperation between many stakeholders. And in the end all of them benefit.
- End users experience personalized comfort and improved productivity
- Building owners experience operational excellence with lower costs, higher energy efficiency and increased ROI
- Specifiers and builders provide innovative solutions and reduce liabilities
- Service and maintenance turns into a fact-based, easier manageable process

New: AB-QM 4.0

Get the basics for HVAC 4.0 right with the best-in-class PICV  

HVAC 4.0

Danfoss AB-QM 4.0 PICV with NovoCon digital actuator

Danfoss is engineering HVAC 4.0 for smart buildings. The combination of AB-QM 4.0 and NovoCon® S actuators is a good example of the increasing digitalization in HVAC. The combination does not only establish high precision, dynamic, hydronic balancing and control. The digital actuators provide BMS with real-time HVAC data to enable Active Energy Management (AEM). Digital valve control via fieldbus also offers advantages in remote commissioning, flow setting and flushing. Continuous logging of all system data enables predictive maintenance and energy allocation. And automatically generated alarm messages support fast and accurate troubleshooting. By using smart and connected products and services, such as AB-QM 4.0 and NovoCon actuators, the energy efficiency and comfort of buildings is being optimized.


Terminal units such as fan coil units, chilled beams or radiant panels, provide heating and/or cooling in each room of a building. They require hundreds up to thousands control valves and actuators for the temperature control. Using smart, digital actuators and Pressure Independent balancing and Control Valves (PICVs) provides the buildings’ BMS with real-time HVAC data while the dynamic hydronic balancing ensures optimal energy-efficiency.

  • Danfoss AB-QM 4.0 pressure-independent control valve (PICV) for hydronic balancing
    AB-QM 4.0 Pressure Independent Control Valves (PICV)

    AB-QM 4.0 Pressure Independent Control Valves (PICVs) are the successor of Danfoss AB-QM. They offer best-in-class specifications and easy installation. The scaling- and clogging resistant design secures and outstanding reliability and long lifetime. They fit to the NovoCon S digital actuators. This enables HVAC data collection for e.g. remote commissioning and predictive maintenance, resulting in a lower Total Cost of Ownership.

  • NovoCon® S and M Digital Actuators - Danfoss
    NovoCon® Digital actuators

    With NovoCon® Danfoss revolutionizes the way hydronic balancing and HVAC control work together. The first of its kind digital HVAC actuators are directly connected with a Building Management System (BMS). This enables System Integrators to design state-of-art, Internet of Things (IoT) solutions.

Air Handling Units provide the buildings with fresh air. The heating or cooling coils distribute a large amount of water. Optimizing the flows with large dimension PICVs equipped with smart digital control of supply and/or return temperatures, combined with AC-drives makes the units perform much more efficient.

  • Pressure-Independent balancing Control Valves (PICV)- Danfoss
    Pressure Independent balancing Control Valves (PICV)

    Pressure Independent balancing and Control Valves (PICVs) provide both a control functionality and dynamic balancing solution for HVAC applications. The valves eliminate flow variations occurring in variable flow systems due to pressure fluctuations at partial load conditions.

  • NovoCon® S and M Digital Actuators - Danfoss
    NovoCon® Digital actuators

    With NovoCon® Danfoss revolutionizes the way hydronic balancing and HVAC control work together. The first of its kind digital HVAC actuators are directly connected with a Building Management System (BMS). This enables System Integrators to design state-of-art, Internet of Things (IoT) solutions.

  • Enhanced VLT® HVAC Drive FC 102
    VLT® HVAC Drive FC 102

    This tough and savvy FC102 drive enhances pump and fan applications in building management systems, and runs outdoors in most climates.

Domestic Hot Water systems are a challenge to keep safe from legionella. Thermal balancing valves provide a safe and reliable solution. Equipped with electronic disinfection controls and connected to buildings’ BMS the data is easy to use for remote monitoring and preventive actions.

  • Danfoss Thermal balancing valve MTCV
    MTCV with CCR2+

    MTCV Thermal balancing valves provide a dynamic, temperature based, balancing solution for drinking water applications. Combined with the CCR2+ a smart and energy-efficient electronic control solution for monitoring and disinfecting DHW systems is established.

Energy meters and corresponding electronic monitoring solutions can provide accurate data about flows and energy consumption from various parts of a buildings’ HVAC system. Being able to fairly allocate energy costs over different users in a building becomes increasingly important, e.g. via European EED regulations.

  • Energy meters- Danfoss
    Energy meters

    Danfoss Sono® ultrasonic energy meters can be used to identify what amount of heating or cooling energy a house, apartment or building has consumed. These compact meters include an energy calculator to read out the consumption. Danfoss offers meters for heating and cooling applications, for primary and secondary side installation.

  • Automatic meter reading (AMR)- Danfoss
    Automatic meter reading (AMR)

    Danfoss Sono® is not only about ultrasonic energy meters. To read out the measured energy consumption there are different options. The Automatic Meter Reading solutions simplify things a lot and can even establish a cloud-based smart metering solution.

Case stories

  • Outstanding HVAC flexibility after high-end office building renovation

    Building: Office
    Application: Hydronic balancing and remote control of 4-pipe heating/cooling change-over system
    Challenge: Ensure a flexible to use HVAC system with DGNB sustainability certification
    Solution: Digital NovoCon actuator combined with AB-QM control valves and NovoCon CO6 combined with ChangeOver6 as a combination balance the system hydronically, allow remote access via a BMS and control the room temperatures during both heating and cooling operation.

  • Danfoss contributes to smart HVAC control solution for I-tower at WTC Amsterdam
    Smart HVAC control solution for the I-tower at WTC Amsterdam, the Netherlands

    Building: Office
    Application: Climate panels with a four-pipe change-over system for Heating and Cooling
    Challenge: Establish a modern, innovative HVAC control system optimized for flexibility in (changing) usage of office space
    Solution: Integration of Danfoss field devices with the Building Management System via BACnet bus-communication

  • Katowice business centre, Poland
    HVAC control at Katowice business centre, Poland

    Katowice Business Centre is a modern office building where Danfoss hydronic balancing solutions are used; AB-QM balancing and control valves in combination with revolutionary NovoCon® actuators.

  • Solar panels covering an area equal to 60 soccer fields
    Key role for Danfoss in world’s largest solar heating plant

    How does heat absorbed by thousands of solar heating panels in a rural field reach showers and radiators in private homes? Danfoss components play a key role making it happen in the town of Silkeborg, Denmark. Learn how.

  • VLT® drives run the world’s smartest district energy system

    Taarnby Municipality within Greater Copenhagen is the first to integrate the production of district cooling and district heating in combination with ground source cooling and chilled water storage in one facility that also exploits surplus heat from a nearby wastewater treatment plant. This symbiosis allows the utility company to provide building owners in the district with competitive and environmentally friendly cooling – while generating more cost-effective heating to the district heating network.

  • In Helsinki a total of 667 addresses in a mix of large and small buildings and apartments have had the Leanheat software installed.
    Leanheat makes buildings smart

    In Europe, 30 percent of all energy consumption goes to heat or cool buildings. Danfoss has the solution to lower energy usage and improve indoor climate by adding a digital element: Leanheat software.

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Learn more about our offering for Commercial buildings

  • hotel room

    The hotel industry is a highly competitive sector where margins are constantly under pressure. The service towards guests must remain on a high level to hold the hotels' reputation. Saving energy is a key-differentiator. Danfoss offers comfort increasing HVAC solutions which help reduce the energy consumption.

  • Office building

    The ways office buildings are used is changing fast. Trends such as smart offices, digitalization and flexible work stations require adaptations in the technical aspects as well. Optimal indoor comfort for workers is essential. Danfoss offers comfort-increasing and energy-saving HVAC solutions.

  • Stadiums

    For professional and international stadiums, it is required a very high standard of playing surface. Under these circumstances it is important to eliminate risks of poor playing conditions or matches’ cancellation, particularly associated with poor weather conditions, e.g. heavy rainfalls or ice and snow.