Rotary heat exchanger

A rotary heat exchanger is a central component in modern ventilation systems, and at Bardram, we specialize in delivering tailored solutions for industrial and commercial ventilation systems that include this innovative device.

What is a rotary heat exchanger?

A ventilation system with a rotary heat exchanger is used to enhance heat and energy recovery. The system consists of rotating heat exchangers that allow the transfer of thermal energy between the fresh supply air and the used exhaust air. This enables the system to reuse the heat energy from the waste air and maintain a more comfortable indoor temperature.

Rotary heat exchangers use a rotating disc or drum to absorb heat from the exhaust air, which is transferred to the intake air as it rotates.

Advantages of a rotary heat exchanger

There are several advantages associated with rotary heat exchanger ventilation.

Energy savings

The rotary heat exchanger reduces the need for external heating or cooling by utilizing heat or cooling energy from the exhaust air, resulting in significant energy savings.

Environmentally friendly

By minimizing energy consumption, the rotary heat exchanger contributes to reducing CO2 emissions, making the ventilation system more environmentally friendly.

Increased comfort

By maintaining a stable indoor temperature, the rotary heat exchanger creates a more comfortable working environment, leading to increased productivity and well-being.

Continuous operation

Rotary heat exchangers allow continuous heat recovery, which is advantageous in situations with varying airflow and temperatures.

High thermal efficiency

The rotating mechanism enables high thermal efficiency, as heat recovery can be adapted as needed.

Disadvantages of a rotary heat exchanger

Our goal is always to deliver ventilation systems that perform optimally in all operational scenarios. You should not have to worry about it. Our professional experience in calculating industrial ventilation enables us to design systems that operate according to very specific requirements.

This means:

  • Reduced staff turnover and training costs.

  • Minimized production losses due to delays.

  • Lower administrative costs.

  • Reduced costs for audits and maintenance.

  • Improved working relationship with veterinary authorities.

  • Efficient troubleshooting and process optimization.

  • Extended lifespan of electrical and automated components due to reduced moisture and heat.


Like any other technological component, the rotary heat exchanger requires regular maintenance to ensure optimal performance. This may include cleaning and replacing filters and inspecting rotating parts.

Rotary heat exchangers may be more sensitive to wear due to the complexity of the rotating parts.

Acquisition costs

Although rotary heat exchangers can result in significant long-term savings, the initial costs of installing a ventilation system with this technology may be higher compared to traditional systems. This is similar to cross flow heat exchangers and counterflow heat exchangers.

Additional information

Here you will find more information about rotary heat exchanger ventilation.

Design and functionality

Rotary heat exchangers use rotating heat exchangers or wheels containing a material with high thermal capacity. This wheel rotates between exhaust and supply air, allowing the transfer of heat and humidity between the two airflows.

Heat exchange mechanism

Rotary heat exchangers use rotating wheels that absorb and release heat directly between the two airflows.

Efficiency and application

Rotary heat exchangers are well-suited for applications where high thermal efficiency and the ability to handle both heat and humidity are important, such as in production environments.

Simple solution

A rotary heat exchanger may have simpler maintenance than other heat exchangers, as rotating wheels have a self-cleaning effect by switching between exhaust and intake phases.

We help you on your way

By choosing Bardram as your partner in custom ventilation solutions, you can be sure that we optimize the use of the rotary heat exchanger according to your specific needs and budget. Contact us today to learn more about how we can create an efficient and energy-efficient ventilation system for your industry or business.

Do you want to know more about our services?

Find everything you need to know in the sections below, and learn about ways we can help your company.


Ventilation is a key solution for companies that need to maintain production environments and keep turning profits. Knowledge and insight about your company are important to us when we design solutions.


Process extraction

In rooms with high temperatures, steam, or contamination, process extraction is the way to go. Dust, heat, or contamination can be extracted from the source and create a better environment for your employees.


In all production rooms, machines and other processes will release heat. To maintain a good working environment, it is necessary to cool these rooms down — our products will help with this.


A dry production environment is key to safety. Steam and condensation on your work site can cause big challenges and loss of production time. Our solutions are designed to keep work areas dry so your team can get back to work sooner. 


Public guidelines determine how much noise is allowed in your work area, and some production units are too loud. Whether excess sound comes from processes in your production or ventilation units on the roof, we can reduce noise and make both employees and neighbors happy.


The smell of food can be wonderful, but if you are surrounded by it every day it might become too much. With different techniques, we can help you limit the odors created during production inside and outside of the working area.


Save unnecessary expenses by getting your current ventilation system checked. Usually, we can find ways for you to save electricity and money, by reusing the power already generated during production.


We have created our own products, that enables dehumidifying and cooling which will lead to a better working enviroment and increased production time.

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Bardram Luft-Teknik A/S

Sønderskovvej 13
DK - 8362 Hørning
Tlf.: +45 71 99 30 60
CVR: 77982213


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Bardram delivers complete solutions for ventilation and cooling while reducing noise and odor.

Our services are used in industrial rooms where heat, condensation, or pollution create a challenging indoor climate.