Extraction

What a good extractor will do?

Ultimately, good extraction will remove grease and odours from the air. If the grease is not removed it will settle on every surface, making it much harder to clean. By removing the grease, it will eliminate the dust and dirt from clinging to kitchen surfaces. A good extractor should work in 2 ways, it will remove air directly from the cooking zone, it will also clean the air in the room. The power of the motor, measured in cubic meters per hour should be 10x the area of the room for it to extract adequately e.g
If your room is 5M long by 3M wide and 2.5M high, your room is 37.5M3
You will therefore, need a hood which extracts at a rate of 375M/H

 

The position of the extractor in relation to the hob has an impact on how effective it is. The optimum position is around 750mm, directly above the cooking area, this allows the steam, vapours and cooking odours to be removed immediately from the air, minimising the dispersal to the rest of the room. Having said this, extraction can be placed further away, an example of this is ceiling extraction. Companies such as Westin offer bespoke solutions for your extractor needs. They are able to create custom made products that vary in size, colour and power.

Extraction is probably the most overlooked aspect of kitchen design and the importance of good extraction can’t be underestimated.

Exhaust Air

This means taking the extracted air from the kitchen, out of the house, through a system of ducted pipes that are connected to the extractor. Most extractor companies give a free-flowing reading for their extraction rate figures, but it’s important to consider the length and route of the ducting when planning your own kitchen. The longer the route, and the more bends there are, the less efficient the extraction. This also applies to the diameter of the ducting pipe used along the whole route, this should be to the manufacturers recommend specification – do not listen to what the builder says, as he will want to drill a 4inch hole, rather than a 5/6inch. It is most beneficial to use non-flexible, smooth ducting as opposed to the flexible version, which has more of an irregular surface. Achieving this will lead to quieter extraction.

With open plan living sometimes a large motor is required, which can be noisy. One way to combat this is to move the motor away from the hood itself, either in line (this can be anywhere along the route of the ducting) or externally (on a wall or a roof).
By placing the motor elsewhere, it can also be much larger, which in turn, means that it can be more powerful.
Recirculation

Re-circulating

Historically, re-circulating hoods have been inferior or a last resort, if you can’t vent out. With the increase in passive, eco and sealed housing, the development of filtration technology has come a long way. A recirculating extractor will recycle the air back into the room after passing through a filtration system. Most manufacturers have invested in active carbon filters, some of which can remove up to 97% of odours (Berbel), others can even filter pollen from the air (Novy). Charcoal filters need changing on a regular basis to maintain performance. However, Berbel and Novy are two of the brands that have introduced a self-cleaning recirculating extractor. When required, the internal section of the extractor heats up to 120C/140C, breaking down the odour molecules. After this process, the filter has been regenerated and can be used like normal.

 

Downdraft extractor

 

Down draft extractors offer an alternative solution to the traditional hoods, sitting directly next to the hob. These appliances are especially useful if you have vaulted ceilings where conventional extractors can’t be fitted.
Novy have developed their range and offer a 2 in 1 hob with integrated extractor option, with the extraction tower located at the heart of the action, quickly and vigorously extracting all vapours and odours. When it’s not in use, it disappears almost invisibly into the hob.
Miele’s Smart line option allows the consumer to customise their cooking zones with versatility and elegance. Individual and unlimited combination options, such as, tepan yaki, gas, induction and wok cooking can sit along side downdraft extractor modules. As a safety feature these downdrafts also come with a flame guard which is essential when installed next to a gas hob, preventing flames being drawn into the extractor.

Extraction technology has evolved significantly in the last few years and there are now an abundance of excellent brands that offer quiet, efficient extraction, to suit all needs.