Automotive workshops

Exhaust gas extraction

+ Customer-oriented solutions for many applications

+ Excellent service

+ Short delivery times

+ More than 50 years of success on the market

+ Reliable partner of the specialised trade

Exhaust gas

When the car repair shop repairs a car, the haulage contractor repairs a truck, or the building contractor a ditch digger, often Geovent products are in use. Our wide range of hose reels ensures that the user always has a hose at hand, when there is a need for efficient extraction of exhaust fumes. Our channel duct solutions are easy and flexible to equip, e.g., so that the exhaust fumes from trucks and other vehicles are easily extracted at the source. The result of a Geovent professional solutions is a workplace, which secures a better working environment for the mechanics, with clear air and no hoses laying around on the floor.

With a professional extraction solution customers get the impression of a professional and well-run repair shop.

Fire trucks and other emergency vehicles with diesel engines potentially have a high emission of pollutants inside the fire station. In case of emergency the respiratory rate of the fire men is increased as a result of stress and hurry, and in addition more pollutants are inhaled, which increases the risk of harm to the body.

Our systems for exhaust extraction from fire trucks and emergency vehicles are an efficient solution. Different systems are recommended depending on the characteristics and the size of the fire trucks, the fire station etc..

Diesel engine emissions must always be captured at the exhaust pipe outlet. Exhaust gas extraction must work with negative pressure and equipment must be designed to capture exhaust gases at the source to the highest possible extend and must be extracted out of the fire station.

To ease the use in case of an emergency the extraction must come from above and it must be as close as possible to the exhaust pipe of the vehicle.

An example of an efficient solution is an extraction system that automatically starts the fan when the alarm goes and disconnects when the vehicle leaves the fire station.

Extraction guide

This table suggests which amount of air you should use,
depending on the application.

Process Air flow per outlet
Hose dimension [mm] Air velocity in duct on unfiltered side [m/s]
Suitable Geovent products
Grinding dust 150 ø80 20 – 25 ASA arms, MEF and MHF fans, GFB2 filter, HVU units
Welding fumes 1.000 ø160 10 – 15 ASA, ESA and Wing arms, GFB2 filter, MEF and MSFG fans
Exhaust gas <3.0L engines 400 ø100 10 – 15 GTE and GTS hose reels, channel duct, MEF, MSFG
Exhaust gas >3.0L engines 1.000 ø150 10 – 15 GTE and GTS hose reels, channel duct, MEF, MSFG
Exhaust from trains 2.000 – 6.000 ø200 – ø400 10 – 15 ø200 and ø250mm hose reels are available. Fixed or telescopic hood solutions are applied in ø315 and ø400mm applications
Exhaust from emergency vehicles
Smaller vehicles
400 – 600 ø125 10 – 15 MRS Rail System, MRSP Rail System, PRS Rail System
Exhaust from emergency vehicles
Larger vehicles
1.000 ø150 10 – 15 MRS Rail System, MRSP Rail System, PRS Rail System

Why choose Geovent?

Our company has existed for more than 50 years and has a
passion for extraction and filtration technology.

Customer-oriented solutions for many applications

Based on the needs of each customer we find effective and cost-efficient solutions

Excellent service

Our technical sales people internal and external is ready to serve you, and we offer you various documentation online.

Short delivery times

With a well-stocked warehouse of raw materials and finished goods, we are able to deliver within a short time after receiving an order.

Reliable partner of the specialized trade

We work closely with installers and distributors across the country, supporting them with advice and documentation for their needs.

A short video on exhaust fumes

The video shows an example of how quickly our extrication system is decoupled when the emergency vehicles is leaving the garage

Product range

Below you will find some of our well-known and recognised extraction products.

Click the products to read more or visit our website to get an overview of our entire range.

Hose reel

Hose reels GTE – electric driven

Hose reel type GTE – electric driven. With a wide selection of nozzles, types of hoses, and accessories.
Width: 750 to 1400 mm
Dim.: ø80 to ø200 mm
Length up to 15 meter

Hose Reel wall

Hose reels GTS – spring driven

Hose reel type GTS – spring driven. With a wide selection of nozzles, types of hoses, and accessories.
Width: 750 to 1000 mm
Dim.: ø80 to ø150 mm
Length up to 10 meter

Suction channel duct for exhaust gas extraction

The channel duct

The channel duct type 35. Flexible and efficient to be used in various applications. A wide range of accessories are available.

Exhaust nozzles

A wide selection of nozzles for connecting hoses to exhaust pipes of cars, trucks, wheel loaders, caterpillars, fire trucks, tanks, and any other vehicle

Extraction arm with internal carrying arm.

WING arm

Extraction arm with internal carrying arm. Dim.: ø160 and 200 mm. Length: 2 to 9 m.



Extraction fan. Corrosion resistant. Energy saving. Airflow: 700 to 24.100 m³/h. Pressure: 200 to 4500 Pa



Our High vacuum units, for Industrial and Heavy Duty use, are used for the preparation of cars, extraction of grinding dust, welding with extraction at the torch etc. Various options are available.
Pressure: Up to 35.000 Pa
Air Volume: Up to 2.600 m³/h

Extraction arm for glue fumes


Extraction solutions for glue and other fumes based on the WING arm Extraction arm for glue fumes The GEOVENT glue

Our customers

We serve large and small customers throughout the World and offer you
the opportunity to get in touch with them and learn from their experience in working with us.

"Geovent offers high quality Danish products.
The service is top notch with fast delivery and help when we need it."

Jesper V. Jensen

”Geovent has perfect extraction, they give us super advice which resultet in a perfect result.”

Sámal Trolle
Sp/f Rock Trawl-doors

We look forward to serving you
in person, by telephone or online

Send us a message now and we will return to you without delay.


Exhaust Gas Extraction: Efficient Solutions for a Healthier Workplace

If you’re looking for effective solutions to ensure a healthier and safer workplace, exhaust gas extraction should be high on your list. Exhaust gases are harmful to both workers and the environment, and proper extraction is crucial for compliance with workplace health and safety regulations.

At Geovent, we provide a comprehensive range of exhaust gas extraction systems that can meet the specific needs of your workplace. An example of this could be our GTS and GTE hose reels, we produce them in different lengths and diameters, making them suitable for anything between moped/scooter to diesel train repair and maintenance workshops. Our team of experts will assess your facility and recommend the most suitable solution for your operation, ensuring you have a safe and efficient system in place.

Our exhaust gas extraction systems are designed to effectively remove harmful fumes and gases from your workspace, exhaust gases, welding fumes, dust, smoke, and toxic harmful substances. With our innovative technology, we can extract gases at the source, preventing them from circulating in the air and posing a risk to workers’ health.

We offer a variety of extraction solutions, including fixed and flexible extraction arms, hose reels, and channel duct systems for moving vehicles such as emergency vehicles, all designed to meet the highest industry standards. Our systems are easy to use and maintain, with minimal downtime, ensuring your workplace remains safe and productive.

At Geovent, we understand the importance of a healthy and safe work environment. That’s why we provide our clients with top-quality exhaust gas extraction systems that are reliable, cost-effective, and tailored to their specific needs. Contact us today to learn more about our services and how we can help improve the air quality in your workplace.

Frequently asked questions

Below you will find answers to some of the most common questions which we receive from customers.
If you have other questions, please do not hesitate to contact us.

Yes! We have our channel duct system, made for moving vehicles, or moving work areas.
We also have our PRS and MRS(G) systems, made for emergency vehicles start up inside the garage and drive out.

We have made a line specifically for emergency vehicles where the extraction nozzle disconnects automatically and moves out of the way as the vehicle exits the garage.

Vehicle exhaust fumes can irritate the eyes and respiratory tract, and are a risk to health by breathing in. Carbon-fuelled engine fumes contain carbon monoxide, a poisonous gas. Prolonged exposure to diesel fumes, especially blue or black smoke, may lead to coughing and breathlessness. Long-term repeated exposure to diesel fumes over a period of about 20 years may increase the risk of lung cancer.

Exhaust fumes can quickly reach harmful concentrations, particularly from cold or intermittently run engines (when run indoors without exhaust ventilation). Don’t rely on catalytic converters to run engines safely indoors. They are less effective when exhaust gases are relatively cool, eg from vehicles idling for long periods or used intermittently for short periods. Catalytic converters do not remove toxic oxides of nitrogen.

Keep the workplace well ventilated. Connect an exhaust gas extraction system to the vehicle tailpipe when idling, particularly when working in a vehicle inspection pit. It should ventilate to a safe place in the open air – where fume will not be drawn back into the workshop or affect other premises or people nearby. Maintain couplings and flexible connections in good condition to prevent leaks. You should not rely on vehicle access doors being left open to provide ventilation as in winter these will be kept closed.