How to Choose the Right Cooker Hoods & Extractors

In depth

Choosing a cooker hood or extractor isn’t just about aesthetics; it's fundamentally about managing the heat, steam, and odours generated by cooking – a critical factor in maintaining a comfortable and healthy kitchen environment, especially considering the UK’s often damp climate. The effectiveness of your chosen appliance hinges on several key considerations, starting with understanding its purpose and then assessing how well it fits your specific needs and circumstances. Primarily, you need to differentiate between cooker hoods and extractor fans. Hoods actively pull air *out* of the room, while extractors draw air *in*, usually through a grease filter and then expel it outside. For most UK kitchens, particularly those with gas cookers, an integrated hood – one that sits flush against the ceiling and wall – is generally preferred for its efficiency in capturing rising steam and fumes before they spread throughout the room. However, if you have an extractor fan installed separately, often positioned above your hob or oven, it’s vital to ensure it's appropriately sized and vented correctly.

The first step in selecting a cooker hood involves measuring your kitchen space meticulously. Don't just estimate; take accurate dimensions of the area directly above your hob or range cooker. The CFM (cubic feet per minute) rating – a measure of airflow – is crucial, and it’s directly related to this measurement. A general rule of thumb for integrated hoods is to choose one with a CFM rating that is at least 100 times the size of your hob in square feet. So, a 30cm hob would need an extractor with a minimum of 3000 CFM. However, this is a starting point; consider the type of cooking you primarily do. Heavy use of frying or grilling will necessitate a higher CFM rating than occasional baking or simmering. Furthermore, pay attention to the noise level – measured in decibels (dB). Hoods can be surprisingly noisy, particularly at high speeds, so look for models with low dB ratings (ideally below 60dB) and consider those featuring quiet running technology if this is a priority. You'll need a basic tape measure and a pen to record your measurements accurately.

Beyond the CFM rating and noise level, grease filtration is another critical factor. There are three main types: baffle filters, foil filters, and mesh filters. Baffle filters – often made of stainless steel – are the most effective at capturing grease particles, as they create turbulence that forces fat droplets back onto the filter surface. Foil filters are a cheaper alternative but require more frequent cleaning. Mesh filters are the least effective and should generally be avoided, especially for frequently used ranges. The type of cooker you own also influences your choice; gas cookers produce significant amounts of water vapour, while electric cooktops generate mainly grease particles. For gas cooking, an integrated hood with a particularly efficient baffle filter is essential. Regular cleaning – at least once a week for foil filters and monthly for baffle filters – is non-negotiable to maintain optimal performance and prevent build-up that can reduce airflow.

Safety considerations are paramount when installing and using cooker hoods. Most UK kitchens must comply with Building Regulations Part F, which concerns ventilation. The regulations stipulate that each hob or range cooker must be served by a dedicated extraction system – this is where an integrated hood comes into play. Older properties may not have sufficient existing ventilation, requiring you to consult a qualified electrician or building surveyor before installing any new appliance. Always ensure the hood’s electrical cable is appropriately sized for the appliance's power consumption and that it’s installed correctly by a competent person. Regularly check the extractor fan’s vent – it should discharge air *outdoors*, not into an adjoining room or cupboard, as this can create condensation problems. Failing to do so can lead to mould growth and damage to your walls and ceilings, particularly prevalent in the UK's often damp conditions.

A common mistake UK homeowners make is overlooking the importance of ducting. The ductwork – the pipe that carries extracted air from the hood to the outside – must be sized appropriately for the CFM rating of the hood. A undersized duct will severely restrict airflow, rendering the hood ineffective and potentially damaging the appliance. Ensure the ducting is made of a material that resists grease build-up (stainless steel is ideal) and that it's properly sealed at all joints to prevent leaks. Another frequent oversight is neglecting regular cleaning. Even with the best hood, if you don’t clean the filters regularly, grease will accumulate, reducing airflow and potentially causing the motor to overheat. Finally, consider the height of your ceiling – integrated hoods need sufficient clearance to function correctly; a minimum of 150mm above the hob is generally recommended. The UK climate, with its frequent dampness and relatively cool temperatures, means that even minor ventilation issues can quickly lead to problems.