Main Content
Dometic helps workshops to save costs and protect the environment with WAECO low emission technology

Dometic helps workshops to save costs and protect the environment with WAECO low emission technology

Dometic's WAECO Low Emission patented technology will bring significant cost and refrigerant savings for automotive workshop owners. The unique technology retains almost 100% of the refrigerant during A/C service and protects the environment. The solution is now also available for servicing buses and trains.

Refrigerant is a precious resource today due to European Union F-gas regulation. It is important that refrigerant not be released into the atmosphere because of its greenhouse effect.

During A/C services, refrigerant loss mainly occurs through the vacuum pump and when the refrigerant is forced out together with the compressor oil. WAECO ASC Low Emission service units collect the escaping refrigerant in a hermetic, pressure-tight oil container, so it can be returned to the refrigerant tank. The unique, patented technology results in a refrigerant loss rate of close to zero percent.

At Autopromotec 2019 in Bologna, Italy, Dometic announced some news about this award-winning technology.

ASC 3500G

WAECO ASC 3500G Low Emission service unit, with its integrated, powerful vacuum pump, qualifies for highly efficient A/C service on large vehicles, such as buses, trains and helicopters. This is where the WAECO Low Emission concept offers considerable savings, because the overall amount of refrigerant recovered per service run is much larger than with standard equipment.

Moisture-free feeding system

Our patented feeding system is now also available for the service units of other manufacturers thanks to new adapters and a new can size. Fresh oil and UV additive are stored in aluminium-laminated bags contained in protective metal cylinders. This keeps moisture out.

New heat belt for the refrigerant collector

One of the key issues facing bus and train workshops today is how to avoid the costly downtimes for their customers. The new heat belt from Dometic WAECO reduces the service time on bus and train air conditioners up to 80%.

Using conventional practices, servicing high-volume A/C systems takes several hours. Service technicians normally need to wait until the frozen collector is heated back to ambient temperature in order to extract all of the refrigerant from the system.

To prevent freezing of the refrigerant collector, a special heat belt has been fitted at the lowest point of the collector. The heat belt is activated at the same time as the compressor of the A/C service unit, so the heating process starts immediately at the beginning of the refrigerant recovery process, saving valuable time.

Note to Editors

Our Low Emission Concept explained
More about WAECO Aircon Service solutions
Photos can be accessed here.

Press Contact:


Dometic is a global market leader in the mobile living industry. Millions of people around the world use Dometic products in outdoor, residential, and professional applications. Our motivation is to create smart, sustainable, and reliable products with outstanding design for an outdoor and mobile lifestyle in the areas of Food & Beverage, Climate, Power & Control, and Other Applications. Dometic employs approximately 8,000 people worldwide, had net sales of SEK 27.8 billion (USD 2.6 billion) in 2023 and is headquartered in Stockholm, Sweden.