Retrofitting of existing systems

Save energy, improve processes, modernize sustainably

  • Up to 45% subsidized acquisition costs

  • Save up to 75% on energy costs

  • 100% planning reliability thanks to premium after-sales service

Modernization with heat pump and optimized air flow

HARTER retrofits existing drying systems with Airgenex® or Drymex® technology: heat pump-based condensation drying in a closed air circuit, precise air flow, and modern control technology. This allows you to increase quality and throughput, reduce energy and CO₂ costs, and remain independent of the indoor climate – with predictable downtime. This avoids the costs of a complete new purchase and significantly reduces conversion and downtime. A retrofit is particularly recommended for very large, mostly fully automated systems; for smaller applications, a complete new system from HARTER is often the more economical and process-reliable solution.

Do you have individual requirements that you would like us to test in advance?

From Idea to Custom Solution
Practical Tests in Our In-House Laboratory

For challenging applications, HARTER develops tailor-made custom solutions. In our technical center, we test your product under realistic conditions, define temperature and humidity windows, optimize cycle times, and document the results. Contact us – we will review your task without obligation and provide a clear recommendation for the next steps.

Contact our experts now +49 8383 9223‑210 or submit the contact form
2000

Drying systems

in over 20 countries stand for our quality

100

Employees

from all areas ensure a high level of vertical integration

+ 35

Years of experience

in the development of innovative drying systems

Your benefits

Retrofits can be implemented during planned downtimes. Mechanical interfaces and control systems are clarified in advance, and modules are pre-assembled. This minimizes downtime and makes your production fully available again quickly.

Retrofitting uses existing drying rooms and conveyor technology, significantly reduces CAPEX (investment costs), and is eligible for funding in many cases. The combination of low initial investment and subsidies noticeably shortens the amortization period – often much faster than with a new system.

Switching to a heat pump with heat recovery significantly reduces energy consumption and measurably lowers emissions. Practical reports show savings in six-figure amounts per year and several hundred tons of CO₂ – depending on the initial system and load profile.

The air-technically closed system operates without exhaust air and stabilizes temperature/humidity. The result: reproducible drying without seasonal fluctuations, less waste, and spot-free surfaces.

Airgenex®/Drymex® modules can be placed separately from the drying room. This facilitates retrofitting in confined layouts; conveyor technology, racks, or trolleys are retained, and adjustments are made in a targeted manner.

We adapt air volume, direction, and zones exactly to the product, bed depth, and geometry – so that the product dries faster where moisture actually escapes, and the process becomes more homogeneous.

Compressed air-free blow-off systems remove coarse water before drying; integrated cooling stages deliver packaging-ready parts – without additional footprint.

New sensors (e.g., humidity), recipe management, and data acquisition make the process transparent and auditable. Existing signal environments (0–10 V/FU) are integrated.
The Process

We dry with dry air and deliver it to the right places: A perfect interplay of air preparation and air guidance provides you with the best possible drying result.

Interface: Airgenex® Dehumidification Technology / Dryer – Moist air is extracted from the drying chamber and supplied to the dehumidification unit.

The pre-cooler pre-cools the air in a first stage. This significantly reduces the compressor’s energy consumption.

Moisture condenses on the fins of the air cooler and drains out of the drying system via the drip tray and condensate drain.

The cooled, dehumidified air is warmed up without additional energy by means of a pre-heater.
The air heater warms the air to the required process temperature.

The process air fan ensures the necessary air exchange between the Airgenex® dehumidification technology and the drying chamber.

Now, the dry, unsaturated air is guided into the drying chamber, where it absorbs the product’s moisture. Thus, the cycle is closed.

Efficiency that pays off.

Our HARTER drying systems save up to 75% CO₂ and are up to 45% governmentally funded.

Reliable – Competent – Long-term

Service that thinks ahead – for years to come

With the HARTER After-Sales Service, you secure a reliable and efficient drying solution for the long term. Whether it’s maintenance, spare parts supply, or technical adjustments – we support your system throughout its entire life cycle and ensure that it delivers optimal results at all times.

Performance Service

Optimal performance through our “all-round carefree package”

Custom Service

Flexible for changing requirements

Expert Service

Fast assistance in case of failure

Lifetime Service

So that the quality is always right

What Our Customers Say

Not convinced yet? Our customers are thrilled!

“Sometimes it’s better to say nothing and let your customers speak for themselves.”
– Regina Mader, Managing Director

“For several decades, we have been using a Harter sludge dryer in our contract electroplating facility and are very satisfied with it. The technology and service are reliable and have helped us save a significant amount of money on disposal.”

Daniel Hutter
Verzinkerei Kriessern AG

“BK Giulini GmbH has been successfully collaborating with Harter GmbH for approximately 20 years. We are very satisfied with both the dryer technology and the reliability of the entire system. Based on these positive experiences and the excellent service, we invested in another drying system of this type in 2023.”

Dimitri Baumbach
ICL Ladenburg / BK Giulini GmbH (ICL Group)

“In our waste incineration plant, we have saved a significant amount of money by drying our heavy metal-containing hydroxide sludge. The plant technology is sustainable and maintenance-friendly. In retrospect, the investment was a very good decision.”

Stefan Ringmann
KVA Linth
Submit your inquiry now

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