Professional Ventilation Systems & Accessories

We depend on air to breathe but, under normal conditions, you can neither taste, smell or see air. We typically only think about air when there is a problem. Heat recovery ventilation and switch cabinet cooling systems can help maintain fresh, comfortable air supply in your home or business. Meanwhile, they can reduce your energy costs and, by using less energy, contribute to climate protection. In addition to heat recovery and switch cabinet cooling systems, we also carry a variety of ventilation accessories made by well-known manufacturers.


  • Heat recovery instead of heat accumulation
  • Decentralised heat recovery
  • Centralised heat recovery
  • Temperature-difference-attenuation systems
  • Switch cabinet cooling
  • Ventilation accessories

Efficient heat recovery instead of heat accumulation

Hazards Caused by Heat Accumulation:

  • Excess humidity
  • Mould growth
  • Wasted heat energy
  • Unnecessarily high heating costs
  • Negative impact on the planet’s ecology
  • Cold floors in rooms and halls, production buildings, etc.

Warm air has a lower density of molecules and therefore a lower mass per unit area than cold air. These means warm air will always rise upwards like a balloon filled with helium. This causes the warmer air to build up right underneath the ceiling in enclosed rooms and buildings. Cold air, on the other hand, accumulates at ground level. Without ventilation to circulate air, the warm and cosy temperatures rise above our heads leaving our feet and living/working areas of the rooms in a cold and uncomfortable atmosphere. Fortunately, effective ventilation can provide better comfort while reducing the amount of energy required for heating while maintaining a comfortable temperature.

In storage and production facilities, air layering can cause considerable damage of goods. Products that are susceptible to temperature, like fresh foodstuffs and oxidising metals, can quickly experience damage when exposed to uneven heat distribution and high humidity. This can even cause items to become non-saleable.

Hazards of Heat Accumulation in Warehouses:

  • Damage to products susceptible to temperature, e.g. perishable foods
  • Damage to products susceptible to moisture, e.g. papers and textiles
  • Rust development on susceptible metals
  • Poor air quality for employees
  • Uncomfortable working temperatures for employees
  • Higher heating costs

Traditionally, to maintain a comfortable temperature for people seated in rooms with high ceilings, additionally amounts of heating was required. Needless to say, this increased the heating bill. Ever-growing prices for energy should be reason enough to rethink this strategy, since heat recovery technology keeps a lid on those expenses. The heat inside the air indoors is extracted and returned either through a centralised or decentralised system. The warmth that is already present is simply recovered, rendering continuous heating redundant. This provides added comfort and long-term savings.

Application of heat recovery:

  • Private households with high ceilings, e.g. old buildings, cellar
  • Production and storage facilities
  • Gyms, shops, culinary establishments, conference rooms, etc.
  • Also beneficial in newly built houses with insulation

However, heat recovery units are not only useful in a private household. Particularly large buildings with high, arched ceilings, e.g. public gyms and indoor tennis courts modern technology can help to cut heating costs drastically. Establishments with visitors coming and going, think of bars and restaurants, lose a substantial amount of precious heating energy through opened doors. Heat recovery is unable to stop this loss, however at least the financial loss can be minimised.

Plan with foresight and read up on effective devices used for heat recovery. This category in our shop contains systems for decentralised and centralised ventilation as well as TDA ceiling fans.

Decentralised heat recovery

Application of decentralised heat recovery:

  • Individual rooms
  • Old buildings
  • Newly built houses, passive houses
  • Environments with high humidity level
  • Environments with unpleasant smell

Frequent air change is vital in closed rooms to ensure quality of air and prevents possible damage due to humidity and mould. As long as you are rely on natural ventilation by opening windows in old, not yet renovated buildings, heat escapes to the outside – costing a pretty penny and is not ecologically justifiable in this day and age.

decentralised ventilation system is a brilliant alternative. It is installed exclusively in rooms that experience a lot of moisture. The system is set up with little effort and does not require too much constructional alteration, making them a good option both in newly built houses and as a means of support of existing heating and ventilation system in old building.

The room in question is supplied with fresh air from outdoors through a small duct in the house wall, e.g. near the window. Otherwise the duct can be attached to an exhaust shaft. A powerful fan extracts used and humid air by creating negative pressure and transports it to the outside through the ventilation shaft or duct. Incoming fresh air is supplied the same way.

Decentralised ventilation systems with heat recovering units can collect between 70 to 75 percent of the heating energy inside the used air and return it to the same room! There are two different functional modes:

Recuperators (preheater)
Supply and exhaust air stream at the same time, the heat inside the extracted air is transferred directly to the incoming air by a plate heat exchanger, for instance.

Regenerators (short-term heat accumulator)
In ventilation systems with alternating supply and exhaust air a heat store, e.g. ceramic element, is warmed up during the extraction phase. The material has an outstanding temperature endurance so that incoming air is heated up.

A tip for maintenance:
Take costs for frequent cleaning and maintenance work into account! Professional checks and replacement of the filters (if need be) in accordance with the manufacturers guidelines are important to prevent contamination of the ventilation system. Pay attention to the recommended specifications when purchasing new filter units. Coarse, medium and fine particle filters are available on the market, and they must be compatible with your system. Fresh air filters remove pollen and other allergens from the incoming supply. Extractor filters protect the device against impurities such as dust, etc. Improper use can cause the system to clog up and lead to the growth of mould. Furthermore it is essential to make sure possible condensate will not drain off directly on the building envelope before installing the air ducts. Special grilles can be added in this situation to avoid unnecessary damage of the building material.

Centralised heat recovery

Application of centralised heat recovery:

  • Passive houses
  • Zero energy buildings
  • Energy-plus-houses
  • Particularly in damp rooms like kitchen, bathroom, WC
  • After renovation of a house

Did you already consider a low energy building or passive house? When planning for this keep in mind that regular ventilation must be provided in an airtight building to prevent moisture, pollutants and mould spores. A centralised heat recovering ventilation system is the way to go in this situation, its efficiency is unbeatable! It takes over supply and extraction of breathing air in all rooms permanently and saves energy in the process. The centralised ventilation system is installed in a room where it is easily accessible, e.g. the cellar, the attic or a storage room. From there it is able to extract the used indoor air evenly from all rooms, filters the air and returns it together with fresh supply air with a more improved quality. The used air is transported to the outside through a duct in the roof where 90 to 95 percent of heat is recovered from the airflow and passed on to the supply. The recovery is done by a big central heat exchanger, the preheating recuperators or the short-term storage regenerators.

Stuffy, muggy indoor air usually measures about 20°C as it has had enough time to heat up by itself. In the shape of an airflow it is driven past the incoming supply flow, for instance through a cross-flow heat exchanger, thus passing on the heat. A major part of the heat in the extracted air is transferred to the fresh supply. Alternatively, a temperary storage passes on the heat: The extracted air gives off its heat when it leaves the building, later this heat is picked up by the incoming airflow.

As quite a few constructional alternations need to be done to implement a centralised ventilation system, it has to be planned by a professional architect or energy consultant. Only then a sufficient air change is guaranteed in all rooms. The ventilation shafts should be layed in a way that provides easy access for maintenance. The amount of maintenance required in a centralised system can be rather extensive, because air filters need to be replaced on a regular basis to ensure cleanness of the indoor air. However, the effort is worth the trouble, the enormous energy savings redeem the initial costs quickly and once the system has been implemented completely it will last decades when maintained by a professional.

Summary ventilation systems with heat recovery

Centralised ventilation system with heat recovery

  • For newly built houses, passive houses, zero energy buildings, energy-plus-houses
  • Extremely efficient, outstanding energy savings
  • Requires structural measures and professional planning
  • Acquisition costs are quite expensive as the entire house requires pipe installation
  • High maintenance: filters must be replaced frequently to ensure cleanness of the air
  • Retrofitting old buildings is not always feasible
  • Entire housing units can be ventilated

Decentralised ventilation systems with heat recovery

  • Old and new buildings with norm of passive house or higher
  • Efficient, saves energy
  • Limited constructional measures are required as only individual rooms are equipped
  • Reasonable costs for acquisition and operation in individual rooms (more expensive when used in the entire building)
  • Low-maintenance
  • Can be retrofitted in existing buildings
  • Ventilation can be adjusted individually in every room

TDA ceiling fans

Benefits of Temperature-Difference-Attentuation systems:

  • Prevents heat accumulation
  • Controlled, targeted circulation of air
  • Air movement without draught
  • Efficient utilisation of heat
  • Less heat is required, resulting in cost savings
  • Goes well with any type of heating
  • Can be added to existing systems
  • Fully automatic regulation
  • Use in summer for cooling purposes

Vortice, one the brands in our range, offers TDA ceiling fans with a high-quality, sophisticated design.

The TDA system combines your heating system with a ceiling fan in one big cycle that is automatically controlled by sensors. These TDA ceiling fans fall in the category “decentralised“ too and offer various benefits that make the best of your current heating system! They operate by making use of thermodynamics by circulating air in the environment, generating an exchange of energy. The warm layer of air underneath the ceiling forced down to the ground and spread evenly across the room. The temperature of the upper layer then blends with the cooler layer on the ground. The heat transferring process is finished once the entire air in the room has reached a homogenous temperature. This method is very efficient, saving expenses when used in large buildings and hangars!

The taller the room or building, the more heating costs can be saved - as much as 30%! Even in a heat insulated building the heating load can be reduced by more than 20%. Investing in a TDA model pays off quickly due to the low acquisition costs. Seeing that fans consume only a minimum of power, the operational costs reach less than 5% of the saved heating costs on average.
Gas, fuel, geothermal energy or solar panels – TDA fans can be combined with any type of heating system without much constructional alteration or effort. Another plus is the use during summer where the rotating blades provide cooling by circulating the otherwise hot stagnant air. Switching back from summer to winter mode is done by a central controller unit.
In professional environments, e.g. in assembly hangars, several fans have to be operated at the same time to achieve optimum results. For instance, a 1000m2 area with 10m ceiling height requires 6 type 1200 or 1400 TDA fans. We are happy to help you decide about the right quantity for your place of application.

We recommend a fully automated control of the TDA ceiling fans via thermostats in domestic and professional environments. The sensors inside two temperature detectors constantly monitor the temperature difference between the ceiling and the floor and even it out whenever it is required. This allows you to experience maximum comfort in the room. The basic TDA control 6 takes measurements about once in a minute and regulates the rotation speed of the fan blades. The best part is: You do not have to move a single muscle to achieve results. Once the desired room temperature is reached the fans switch off automatically.

Switch cabinet cooling

Any place with an electric current is bound to experience energy conversion into heat. Switch cabinets house particularly many live wires, and high temperatures drastically shortens the life span of semiconductors. It the inside of the cabinet gets too hot, serious damage on the electrics and cable ducts is almost guaranteed. Insufficient air circulation and the resulting humidity due to accumulated heat only speed up this process. For that reason the warm air inside the cabinet needs to be extracted to the outside.

The method of heat release depends on the construction of the control cabinet. There open, permeable and closed types that prevent the automatic air exchange with the ambient air. A natural heat release (passive climatisation) through simple air inlets on the housing is not enough in most cases. If the cabinet is standing next to a wall, the natural release is slowed down further.

Our professional heat removal units protect your switch board against overheating. A fan sucks in the warm air on the inside and transports it away through an exhaust grille on the upper portion of the cabinet. Potential condensed water can exit through openings in the sealing cap. Fresh, cool air should be supplied from the outside. If the temperature of the ambient air in the room is not much different from the air inside the cabinet, a separate ventilation unit can cool down the air to a sufficient level.

Careful: The IP rating of the cabinets is a crucial factor when it comes to choosing the right cooling and ventilation ducts. Our fans are protected against solid foreign objects, dust and splashing water. We recommend adding a thermostat with indicator light for more convenience and easier handling.
Even though the installation of our SystemCool model is easily done with connectors, consult a professional, for example your technician, if you are unsure about setting up the system.

Accessories – Everything you need for your system

Upgrade your ventilation systems with tried and tested branded accessories. This category offers useful add-ons for your ventilation units, for instance controllers and regulators, environmental sensors and shutters, as well as everything you need for a successful installation. Extras designed specifically for ceiling fans are also available here.

Rely on the competence of our hand-picked suppliers and our quality requirements for branded goods. The ventilation systems we offer all comply with international safety standards, you will often find that materials can be recycled and are easy to install. A long service life is guaranteed!

A few clicks around our webshop take you to your new product. Use the filter function to sort out specific requirments like airflow or IP ratings. Our detailed product description tells you more about the technical data – simple and convenient, guidance could not be easier.

Our product choice for you

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