Air handling units

  • Overview
  • Related products

High-accuracy AHU performance

Establishing the most accurate air exhaust temperature from the Air Handling Unit requires the most accurate control of water flows into the heat exchangers for heating or cooling the entry air flow. In most cases a variable flow system is used for this. The best results, in both full- and partial load conditions, can be achieved by using Pressure Independent Balancing and Control Valves (PIBCV). They are simply set to the required flow under full load conditions and function as automatic flow limiter. In partial load conditions the actuator accurately reduces the flow according needs. No overflow situation will occur, increasing the energy efficiency of the heat or cooling source.

For an alternative solution with a constant flow system, regular Motorized Control Valves and Manual Balancing valves to determine the maximum flow can be used.

To be able to service the control valves it is recommended to install manual shut-off valves.

Danfoss also offers a range of electrical actuators for dampers. They control the amount of air entering the air handling unit by positioning the dampers in any position between 0-90 degrees angle. These can cover a damper surface of up to 8 m2.

To protect frost sensitive parts of an Air Handling Unit, it is possible to install self-limiting electric heating cables. These increase their heat the output as the environment temperature reduces.

Energy-lean AHU performance

Danfoss AC drives enable you to optimize energy efficiency, never compromising on the safety and comfort of the occupants of your building.  Danfoss solutions help you comply with increasingly stringent efficiency standards while ensuring perfect indoor air quality and safety, by minimizing the spread of airborne infections. Ensure thermal comfort for building guests, staff and residents while simultaneously addressing large energy bills.


Enjoy reliable, economical indoor climate control using AC drives. You get the the lowest Total Cost of Ownership (TCO) in the market: adapt capacity to actual demand, reduce operating costs, and reduce wear and tear on your installations.

How we can help you

Complaint free indoor comfort

Energy optimization

Cost savings

Accurate air temperature exhaust

Reliability

Ease of service, maintenance and repairs

AB-QM pressure independent balancing and control valves

Enjoy simple affordable comfort and control hydronic flow with Danfoss AB-QM™ pressure independent balancing and control valves.

Related products

  • if (isSmallPicture) { AB-QM™ Valves; } else if (isBigColumns) { AB-QM™ Valves } else { AB-QM™ Valves }
    AB-QM™ Pressure Independent Balancing Control Valves

    Simple Affordable Comfort - Pressure independent control excellence from the global market leader for over 30 years. Discover how Danfoss AB-QM™ Pressure independent balancing control valves (PIBCVs) can improve system efficiency by eliminating overflows and increasing ΔT.

    Danfoss offers a complete range of innovative solutions - ½" to 10", to meet your HVAC system's needs for optimal flow control.

  • if (isSmallPicture) {  AB-QM™ Actuators; } else if (isBigColumns) {  AB-QM™ Actuators } else {  AB-QM™ Actuators }
    AB-QM™ Actuators

    A variety of complimentary actuators are available that work synergistically with the AB-QM™ valve, maximizing the balancing & control features of the valve. Select your actuator based on your desired control input features for your application.

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    Manual balancing valves

    Manual balancing valves provide a static, basic balancing solution for many HVAC applications. The valves limit the flow through different parts in heating, cooling and domestic hot water systems. Since manual balancing valves can not react to changing conditions, the valves are recommended to be used in constant flow systems.

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    About DrivePro® Life Cycle Services

    Get the most out of your AC drives and VFD applications, assisted by DrivePro® services for Danfoss VLT® and VACON® drives. You get services that go beyond simple troubleshooting, maintenance, repairs and replacements. They also proactively improve productivity, performance and uptime. You get specialized training and access to expert knowledge, to benefit your business directly.

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    DrivePro® Site Assessment

    Optimize your maintenance strategy with a complete onsite survey and risk analysis of all your AC drives collected in one detailed report. Together with a Danfoss expert, you can build a tailored plan for future maintenance, retrofits, and upgrades based off your exact needs.