Commercial air handling units

Commercial Air Handling Units product range - commercial climate control solutions by Dantherm Group
Weger WD General – commercial air handling unit

Commercial air handling

A UK specific product, the WD General range of air handling units are designed for non-pool applications such as general commercial development.

Weger WD Healthcare – air handling unit

Commercial air handling

A UK specific product for specialist air handling in healthcare premises.

Weger WD Packaged Heat Recovery – commercial air handling unit

Commercial air handling

A UK specific product, this is a range of compact heat recovery air handling units.

Why choose commercial air handling units?

Whether it's a busy leisure centre, a commercial swimming pool or a prestigious art gallery, different spaces have different demands. A leisure centre may want to keep temperatures cool for those working out, whereas a gallery needs to control humidity to preserve priceless artwork.

While it is possible to regulate conditions throughout a large facility using a single system per room, this can be costly to set up and run, especially in hotels where a single building can house hundreds of individual rooms.

Air handling units (AHUs) are large systems capable of delivering highly efficient whole-building climate control on a per-room basis throughout commercial facilities.

By handling air quality in large spaces, alongside temperature and humidity, AHUs work to minimise energy consumption and operating costs, all while creating a comfortable, healthy and productive climate for occupants.

Although this technology can be built to custom specifications, the core principle remains the same. Air handlers draw in outdoor air and clean, heat or cool it, depending on the needs of a space. Conditioned air is supplied to where it is needed, and stale air is extracted while heat is recovered.

Treated fresh air units (TFAs) serve a similar purpose to AHUs, however, there are key differences in this technology.

A TFA uses 100% fresh air, never recirculating existing inside air to regulate conditions. While air quality is maximised, this process requires more energy to operate. An AHU, on the other hand, harnesses heat recovery ventilation to maximise efficiency and economy.

Although commercial air handlers represent one of the most energy efficient methods of whole-building climate control, it is important to select the right type and size of AHU for the best energy savings.

With decades of experience delivering efficient and effective climate control, and a wide range of solutions that prioritise sustainability, durability and usability, Dantherm Group is the manufacturer of choice for dependable commercial air handling solutions for any sector.

For more information about our range of air handling technology, or to discuss the precise needs of your commercial building, get in touch with our expert team today.


Commercial air handling units: Frequently Asked Questions

What is a commercial air handling unit?

A commercial air handling unit, sometimes referred to as a commercial AHU, is a large, comprehensive system designed to meet the climatic needs of an entire building.

Specified for individual environments, these systems provide heating, cooling, drying and ventilation as needed to maintain the optimal temperature, humidity and air quality inside with maximum efficiency.

How does a commercial air handling unit work?

Prestigious art galleries. Large office buildings. Busy cinemas. Different spaces have their own unique climate demands, which commercial air handlers meet through bespoke design and delivery.

Although commercial AHUs can vary in their construction and capabilities, they operate on the same principle. Outside air is first drawn into the machine, where it is conditioned to meet the needs of the facility, before being distributed inside.

With air flowing into the device, the in-built cooling and heating coils are tapped to provide fresh air at the right temperature. At the same time, EC fans move the conditioned air throughout the building, while dehumidification technology keeps humidity at comfortable levels.

What are the benefits of using a commercial air handling unit?

Instead of using multiple separate devices to control the climate in large spaces, a commercial air handling unit can handle this task using a single system. This has several benefits for facilities:

  • Precise climate needs are met year-round

  • Energy efficiency is maximised

  • Operating costs are kept to a minimum

  • Climate control setups are easier to manage and control

How often does a commercial air handling unit need maintaining?

Commercial air handlers have to be regularly maintained, as these solutions handle large amounts of outside air and often operate continuously. However, due to the bespoke nature of these systems, the cadence of maintenance required may vary.


For detailed information on when and how you should maintain your AHU, reach out to our team of experts. We can advise on best practices, and pair you with one of our trusted servicing partners across Europe.

Can a commercial air handling unit also improve the quality of the air?

Yes. Either by delivering fresh outside air into a space, or using a series of filters to cleanse areas of harmful particles, commercial air handlers can significantly improve the air quality of practically any facility.

Where would you use a commercial air handling unit?

Whether a leisure centre needs to keep temperatures at a healthy level, or a prestigious gallery has to control humidity and protect priceless artwork, commercial air handlers can be used across a wide range of large environments to create and maintain ideal conditions, such as:

  • Cinemas

  • Office buildings

  • Hotels

  • Hospitals

  • Sports centres

  • Museums

How does a commercial air handling unit improve energy efficiency?

Air handling units act as a single, all-encompassing solution to control the climate in commercial spaces. Using fewer units reduces both initial purchase prices and long-term electricity consumption, leading to substantial cost savings.

Additionally, as AHUs are designed with a specific setting in mind, they maximise energy efficiency by delivering the precise amount of conditioned air required.

How do I choose the right model or size of commercial air handling unit?

Choosing the right commercial air handling unit for your specific needs requires specialist knowledge and a wealth of experience. Our team of experts have both, and have been responsible for countless successful installations since 1958.

We consult with you on your ideal solution and match you with your nearest local supplier, allowing you to achieve optimal performance, maintain a comfortable and healthy environment, and make the greatest energy savings.

Can I buy your commercial air handling units online?

For all of our commercial air handlers, VAT-registered companies can get a quote very quickly by pressing 'I want to buy' and inserting their enquiry and contact details.

However, you cannot carry out the entire purchasing process on our website. We consult with you to specify and deliver a bespoke solution that meets your precise requirements, facilitating this when you use the 'I want to buy' button for the solution of your choice.

Can I bulk buy commercial air handling units for a large project?

Yes, we can fulfil bulk orders across our range of air handlers for large, bespoke projects. Get in contact with our experts or go direct to your local Dantherm Group representative to discuss the exact needs of your project and how we can meet your requirements.

Can I speak to someone for technical advice to buy the right commercial air handling unit?

At Dantherm Group, we pride ourselves on ensuring all solutions we supply are tailored to your precise needs. Our decades of experience and total control over the design and manufacture of our range of commercial AHUs means we can provide you with bespoke, technical advice to ensure you receive the most efficient, effective and sustainable solution.

Reach out to our experts for a free, specialist consultation about your specifications so we can advise you on the most suitable solution.


What is your delivery time for commercial air handling units?

This depends. For some standard commercial AHUs, as well as their accessories and consumables, we offer day-to-day delivery. Larger or more complex orders will likely have a longer lead time.

For detailed information on when you can expect to receive the solutions you are interested in, please reach out to your local Dantherm Group representative.

Do you sell commercial air handling units to private individuals?

No. Dantherm Group air handling units included on this website are sold only to industry professionals.

Do you provide support, servicing and parts for these commercial air handling units?

Yes. We have dedicated offices, suppliers and servicing partners based across Europe to provide timely, ongoing support across our entire range of commercial air handling units. You can get in touch through our contact form and we will make sure your enquiry is handled by the office or service partner best suited to your needs.

We also have an extensive network of spare parts dealers throughout Europe, who are geared to provide you with a complete stock of spare parts for your AHUs. We are committed to catering to your needs and getting you the required parts as quickly and easily as possible.

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