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The Cameo buyers guide to cooker hoods and extraction

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   There are many types of hood/extractor available. Most of them are listed below:

  • Chimney
  • Integrated
  • Canopy Motor Units
  • Conventional
  • Telescopic
  • Downdraft (For worktop or island installation)


The main reason for installing an extractor is to take away the smells and grease that are produced during cooking. Extractors will also help to take away the steam and heat that is associated with cooking on a hob. The dirty air passes through a grease filter first, which is normally made up of layers of aluminium mesh (metal grease filters). A few extractors do still use paper of fibre grease filters, which can be washed a few times but will eventually need to be replaced. Metal grease filters can be washed in the sink or a dishwasher, and therefore do not need to be replaced.

Ducted out or re-circulating?


  
All extractors are designed to take the dirty air through ducting and then out to the outside world. The majority of extractors also have the facility to have a carbon/charcoal filter fitted, which will get rid of the cooking smells. The cleaned air is then blown back into the kitchen via a vent in the extractor. This does not help alleviate the problem of condensation caused by steam and will slow the air-flow, but sometimes is the only option if the extractor is not close to an outside wall.

It is important to keep the ducting run as short as possible. Every bend or elbow in the ducting will reduce the efficiency by approximately 5%. Always use the manufacturers recommended size of ducting.

Current building regulations require virtually all hoods fitted within new properties to be ducted out.

Avoid common ordering and installation errors

  • If ducting out check to make sure you have an uninterrupted run to the outside wall.
  • Use the correct ducting, if it is to small the hood will be inefficient and too noisy.
  • Check for obstructions outside to ensure the ducting hole will not be restricted.
  • Ensure the ducting kit is the correct diameter for your hood.
  • Plan out under floor ducting for Island units well in advance

How noisy is my hood?

This handy guide will help you make sense of decibel ratings and how long you should be exposed to noise.

Remote Motors

   Some manufacturers offer extractors with a remote motor. This means that the motor/fan unit is not situated inside the appliance, but is fitted remotely. The remote motor is normally fitted in a loft space or onto an outside wall and is connected to the hood by a power cable. Ducting is required to take the dirty air from the hood to the motor and this must be ordered separately. The main advantage of this type of extractor is that they are a lot quieter than standard hoods. The extraction rate is also improved, and can be up to 25% more efficient.

Avoid common ordering and installation errors

  • Plan out under floor ducting for Island units well in advance.
  • Ensure sufficient uninterrupted space is available for ducting to be run above a ceiling.
  • Ensure that you order the correct motor for your hood.

Chimney hoods mounted on a wall

   Avoid common ordering and installation errors

  • Please check ceiling heights - even though hoods can have adjustable chimney sections, some ceilings are too low or too high!
  • Ensure that you have the correct clearance above your hob, 650mm if electric 750mm if gas.
  • Ensure you order the correct type, for example an island hood cannot be fitted against a wall.
  • Remember to order the ducting or recirculation filters.
  • Check extraction rates and motor noise levels to ensure the hood meets your needs.

These are available in various sizes. The most common are 600mm, 700mm, 900mm. There are other sizes available – 800mm, 1000mm and 1200mm to name a few, but these are less common. Most canopy hoods have chimneys supplied in 2 sections, this enables them to be installed to suit varying ceiling heights.

It is not necessary to match the width of the hob and hood. You can fit a 900mm hood over a 600mm hob or a 600mm hood over a 700mm hob! We recommend that the hood is at least as wide as the hob for maximum efficiency. In any event furniture MUST NOT be fitted above, or overlap, a hob unless some form of extraction system is between the hob and your units.

Please ensure that the model you order is the correct height and type.

Island Hoods

   Avoid common ordering and installation errors

  • Please check ceiling heights - even though hoods can have adjustable chimney sections, some ceilings are too low or too high!
  • Some island hoods are a fixed height, make sure the size is suitable.
  • Remember that Island hoods must be fixed to a ceiling.
  • The fixing must be strong enough to hold the Island hood (40kg+).
  • Ensure that you have the correct clearance above your hob, 650mm if electric 750mm if gas.
  • Ensure you order the correct type, a standard hood cannot be fitted above an island.
  • Remember to order the ducting or recirculation filters.
  • Ducting out can be tricky. Check you have a clear ducting run.
  • Check extraction rates and motor noise levels to ensure the hood meets your needs

These are available in various sizes from 600mm to 1500mm. Many island hoods have chimneys supplied in 2 sections, this enables them to be installed to suit varying ceiling heights. Beware of fixed height island hoods – these are often unsuitable for ceiling heights higher or lower than the average 2400mm.

It is not necessary to match the width of the hob and hood. You can fit a 900mm hood over a 600mm hob or a 600mm hood over a 700mm hob! We recommend that the hood is at least as wide as the hob for maximum efficiency. In any event furniture MUST NOT be fitted above, or overlap, a hob unless it is below some form of extraction system.

Island hoods must be fixed to the ceiling. These hoods need to be fixed to a joist etc. in order to obtain a secure fixing. Please ensure sufficient support is available in the correct position before ordering your hood.

Please ensure that the model you order is the correct height and type.

Integrated Hoods

   Avoid common ordering and installation errors

  • Ensure that you have the correct clearance above your hob, 650mm if electric 750mm if gas.
  • This model will require a door to match your kitchen.
  • Remember to order ducting/filters with the hood.

This type of hood has a door mounted on the front of it. All manufacturers offer at least one of these in their range as it is relatively inexpensive and when fitted is virtually undetectable. Available only in 600mm wide and normally offered in silver (not stainless steel), this type of extractor is an old favourite.

Conventional Hoods

   Avoid common ordering and installation errors

  • Ensure that you have the correct clearance above your hob, 650mm if electric 750mm if gas.
  • Remember to order ducting/filters with the hood

Conventional extractors were very popular at one time. They can be fitted to the wall above a hob, or to a top box unit as shown on the previous page. These tend to be bought nowadays as a replacement for old existing extractors, and are used less in new installations. These hoods are generally not as powerful as other types and are usually not the most attractive.

Canopy Motor Units

   Avoid common ordering and installation errors

  • Ensure that you have the correct clearance above your hob, 650mm if electric 750mm if gas.
  • This model is designed to fit within a furniture canopy or chimney.
  • Remember to order ducting/filters with the hood.
  • Check the sizes, particularly the height and depth to ensure you have sufficient space.

Also described as motor units, this variation is normally used in a wooden canopy or a chimney breast style installation. There is a very limited range that will fit into a wall unit, but extreme care must be taken to ensure that your units will accommodate these hoods. There are a few sizes available, but they are generally made in 52-54cm or 72-75cm wide sizes. These hoods are generally 300mm deep or more and will not fit into a standard wall unit.

Care must be taken by the client/installer with regard to the size of these extractors, as some will not fit in certain furniture canopies.

Telescopic Hoods

   Avoid common ordering and installation errors

  • Ensure that you have the correct clearance above your hob, 650mm if electric 750mm if gas.
  • Not all of these extractors come with a trim on the front. This is often an optional extra.
  • Remember to order ducting/filters with the hood.

This style of extractor is slowly becoming more popular. These are fitted into a wall unit, and are available in various widths. The extractor motor is hidden in the unit and all that is visible is a pull out section at the bottom. This section can normally have light pelmet fitted to it, so it will blend in with the rest of the furniture. The disadvantage with type of extractor is that the unit above it is lost due to the motor inside.

Downdraft Extractors

   Avoid common ordering and installation errors

  • Remember to allow sufficient space below for the motor unit
  • Use the correct length ducting
  • Allow for ducting when fitted within an Island unit
  • Remember to order ducting with the hood.
  • Plan your ducting run prior to installation.

Care must be taken in the installation of this type of extractor but get it right and they are fabulous.

This extractor fits into the work-surface adjacent to the hob or hobs. Most often used in island installations where it is more difficult to install an extractor overhead.

The tricky area with this type of extractor is the way the ducting is installed. If it is an island installation, then the ducting has to be run under the floor. Not easy when it is a concrete floor! Some models allow the use of a remote motor within, or at the end of, the ducting run (often outside).

Downdraft hoods work best with ceramic and induction hobs.

Ceiling Extractors

   Avoid common ordering and installation errors

  • Check that you have sufficient ceiling space for the hood.
  • Ensure you have sufficient space for ducting
  • Use the correct length ducting
  • Remember to order ducting with the hood.
  • Plan your ducting run prior to installation.

Careful consideration is required for the installation of this model. If you have the space above then this hood, fitted flush with you ceiling is discreet and efficient. It there is insufficient ceiling space some of our customers have built a feature boxing above their island to house the extractor and lighting – we have seen some wonderful examples of this.

Take care to consider the way the ducting is installed within your ceiling. Some models allow the use of a remote motor within, or at the end of, the ducting run (often outside).

Cleaning Appliances

   We are often asked questions about keeping appliances clean. The most popular question being, How do I stop fingerprints appearing on stainless steel?. The short answer is You cannot!. That said many manufacturers use anti fingerprint stainless steel so it is far less of an issue than it was.

If baby oil on a soft cloth is used to clean the front of the oven, this will keep them at bay, but will not stop them completely. Another useful aid to cleaning is the E-Cloth. This is a cloth that manufacturers recommend to use on the exterior of ovens etc., particularly stainless steel. These cloths are similar to a face flannel, and are best used slightly damp. Some manufacturers have tried to solve the problem by using a clear lacquer, which coats the steel and protects it from our greasy fingers. This does seem to be effective.

Generally, appliances that are offered in a colour are easier to clean. Often the surfaces are glass and colour is sprayed on the back. However there are still a large number of appliances that have an enamel finish, e.g. hobs and cooker hoods. These are relatively easy to clean, but enamel/painted finishes can chip.

Induction hobs are a revelation when it comes to cleaning. As the hob heats the pan not the hob surface, burnt on spillage is no longer a problem. Water is generally all that is needed for cleaning with a soft dry cloth to finish off. A liquid cleaner may be required on occasions.
Still not sure? Need more information?
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