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General questions about BORA

Steam and vapours rise at a maximum speed of one metre per second. The BORA cooktop extracts with cross flow suction that is higher than the speed at which cooking vapours rise. In this way, the cooking vapours and odours are effectively extracted on the cooktop.

BORA Professional cooktops have a depth of 540 mm and a width of 370 mm, i.e. there is more cooking space. They are controlled by a touch-operated rotary knob on the front cover. The BORA Professional System is modular and can be put together from a variety of different cooktops and ventilation components.Shop all BORA Professional products

BORA Classic cooktops have a standard depth of 515 mm and have touch-operated controls directly on the cooktop. The BORA Classic cooktop extractor system is a complete preset system. Right from the cooktop extractor, through the piping with integrated silencer to the plinth fan, all of the components are already contained in the scope of delivery. The BORA Classic System can be adjusted to suit a wide variety of different cooktops and can therefore be planned individually.Shop all BORA Classic products

BORA Basic is a compact unit with a size of 515 x 760 mm or 515 x 830 mm for BORA Basic with surface induction (BFI), consisting of a large cooktop with four cooking zones and a central extractor. BORA Basic also has intuitive touch-operated controls directly at the front of the centre of the cooktop. The new BORA Basic BFI has a new innovative operating concept with a touch roundslider.Shop all BORA Basic products

Up to 250 ml of liquid can collect in the cooktop extractor, where it can be easily wiped off. If more liquid runs into the cooktop extractor, this will not harm the electronics, as the airflow is directed outside of the electronics. 

With BORA Basic, larger quantities of up to 3 litres of liquid can collect. The housing base can be removed for simple cleaning.

Objects that fall into the cooktop extractor land in the collection dish and can be removed easily. The stainless steel grease filter prevents objects from being drawn into the airflow.

The grease filter and covers can be removed easily by hand and cleaned in the dishwasher.

In contrast to traditional extractor hoods with a high noise level at head height, BORA is quieter when cooking than normal noises that occur during roasting. The volume depends to a large extent on the individual installation and space.

Cooking vapour, evaporated grease and the odours that go with them are completely extracted where they arise – directly on the cooktop. The cook stands in fresh air, while his or her clothes and hair remain fresh and unaffected by cooking vapour.

Cooking vapour is easily absorbed even from a pan with a height of 20 cm. We recommend that for pans with a height of approx. 21 cm and over, you position the pan lid diagonally to conduct the vapours in the direction of the extractor.

You can obtain BORA from our competent retail partners in kitchen studios, cabinet makers’ workshops and furniture shops. You can easily find the BORA partner closest to you using the retailer search function. The partner will be able advise you in store with regard to any questions you may have about planning your kitchen with BORA cooktop extractors.

2 years plus the option of extending the warranty by a further year

Yes, BORA offers an extended warranty for any BORA cooktop extractor system. There is a sticker with a registration code on the cooktop extractor, which the customer can enter simply at The warranty extension is free of charge.

Yes, it is the same for any BORA cooktop extractor system.

Either from the retail partner in store or in our online shop.

Questions about humidity

Relative humidity gives the saturation level of the air at the current temperature. Warm air can take up more water, cold air can take up less water. I.e. cold air is saturated more quickly. For a comfortable heat, the relative humidity lies between 25 and 60% at a room temperature of 20 to 25 degrees Celsius.

Application examples of ventilation and air-conditioning technology | Download | PDF (Source: TROGISCH, FRANZKE. Feuchte Luft. VDE Verlag)

During normal cooking, say cooking for approx. 30 minutes e.g. vegetables, fish or meat, the increase in relative humidity in the exhaust air is barely measurable. If water is boiled vigorously for 30 minutes, the relative humidity increases by approx. 10%.

Watch the video "How humidity develops during cooking” here.

In compliance with current building standards and the German Energy Saving Ordinance (EnEV and DIN 4108), mould formation is excluded when using BORA air circulation or exhaust systems in old and new buildings, and in a normal indoor climate. Wood and kitchen components, as well as other components, are not damaged.

In general: Observe the general instructions in BORA’s assembly documentation for air circulation and exhaust operation!

Questions about the exhaust solution

For BORA Professional and BORA Classic, exhaust ducting of a maximum 12 metres may be used. For longer exhaust channels of 6 metres and over, a second fan must be deployed and it is recommended that you increase the duct cross-section. If the exhaust channel is longer than 12 metres, it is also possible to use the additional fan, ULIE, and implement exhaust ducting of up to 16 metres.

For BORA Basic with BFIA surface induction, exhaust ducting of 10 metres can be implemented if the additional fan, ULIE, is used.

For BORA Basic BIA and BHA, the exhaust channel must not exceed a maximum length of 6 metres.

The BORA Professional cooktop extractor can be combined flexibly with any two fans.

The BORA Classic cooktop extractor CKASE and BORA Basic with BFIA surface induction can be expanded with additional fans.


Questions about air circulation

Yes, all BORA cooktop extraction systems can be planned both as air circulation and as exhaust air variants.

The ULB1/UUE1 air circulation unit must be changed once a year, the ULB3/UUE3 exhaust air units every two years. The integrated filter of the BORA Basic cooktop extractor system (BAKFS) should also be renewed once a year or after 150 hours of operation. The integrated filter display indicates when this running time has been reached. Go to mybora to easily order your replacement filter.

The cleaned air is conducted into the plinth area. It is returned to the room through a return flow sequence of at least 500 cm².

In a normal indoor climate and with proper installation, there is no risk of condensation or mould. With regard to this, please take note of the operating instructions.

To guarantee optimal performance from the odour-neutralising activated charcoal filter, we always recommend the automatic cut-off. This takes 20 minutes and adjusts itself automatically as soon as the ventilation is turned off. Basically, you should ensure that there is sufficient ventilation (e.g. an open window) when cooking in recirculation mode.

Questions about cooktops

Yes, within the BORA Professional and BORA Classic product ranges, there is a large selection of modular cooktops. You can choose between induction cooktops and HiLight or hyper cooktops, the classic radiant heating variants. The gas cook top and the Tepan stainless steel grill complete the range. BORA Basic is available in hyper, induction and surface induction variants. Further information on our product ranges can be found here.

BORA cooktop extractors are only available in combination with BORA cooktops.

The cooktops are precisely tailored to the measurements of the cooktop extractor and therefore enable optimal installation.

Yes, BORA cooktops can also be purchased without the cooktop extractor.

All BORA product lines can be installed flush and surface-mounted. For Classic, there is also the option of installing the standard combination with 2 cooktops and 1 cooktop extractor virtually flush on worktops made of any kind of material, including laminate, with the help of the BORA Classic CER frame.

No, the product lines cannot be combined with each other.

The BORA Basic cooktop frame made of brushed stainless steel is an accessory for surface mounting. It comes in two sizes: BKR760 for the 760 mm-wide BORA Basic BHA/BHU and BIA/BIU cooktops, as well as the BKR830 in the width of 830 mm for BORA Basic BFIA/BFIU. 

The black air inlet nozzle is available as an accessory for all new  Basic models. 

However, this combination is not recommended for BHA/BHU and BIA/BIU Basic cooktops that have already been installed due to to the fact that the fit will not be exact or joints will appear.

Yes, absolutely. This has a special DLC (diamond-like carbon) coating.

Questions about planning and assembly

Yes, but you may need to shorten the depth of the drawers, depending on the installation.

Basically, this is not recommended, as the BORA system will not be accessible to service engineers when the appliance needs to be serviced. In addition, the cooktops could overheat. 

This varies according to the assembly and number of cooktops and cooktop extractors. For a standard assembly of two cooktops and one cooktop extractor, for BORA Professional and BORA Classic you need a floor unit of at least 900 mm in width. For three cooktops and two cooktop extractors, 1,400 mm are needed. These can be put together in any way you choose with a full-length front cover and several floor units.

For BORA Basic BIA/BIU and BHA/BHU, the floor unit must be 800 mm in width. For BORA Basic BFIA/BFIU, the floor unit must be 900 mm in width.

From the front edge of the front cover, a depth of at least 600 mm must be available (plus worktop overhang, if present) for the installation of BORA Basic and BORA Classic.

The installation depth of BORA Professional varies according to the type of installation. A minimum depth of 650 must be given (plus worktop overhang, if present).

For all three BORA cooktop extractor systems, we need a worktop with a thickness of between 10 and 40 mm, including base. The basic needs to be notched accordingly for thicker worktops.

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