Can one utilize existing ducts when installing a new kitchen exhaust fan?
In the heart of every home, the kitchen is a bustling hub where meals are prepared and shared. However, cooking can lead to unwanted odours, steam, and grease build-up, making a well-chosen kitchen extractor fan an essential addition. Here's a step-by-step guide to help you make the best choice for your kitchen.
Firstly, determine your kitchen's volume. Calculate the space the fan needs to ventilate using the formula: Length x Width x Height. This gives you the room volume in cubic metres (m³).
Next, aim for 15–20 air changes per hour in your kitchen, a robust standard for kitchens where cooking produces steam and odours. However, it's important to follow local building codes if they specify a different rate.
Calculate the required extraction rate by multiplying the room volume (m³) by the number of air changes per hour. For example, if your kitchen is 22.5 m³ and you want 15 air changes per hour, you'll need an extraction rate of 337.5 m³/h. However, if your regulations require a minimum (like 216 m³/h), you must select a fan that meets or exceeds this value.
When selecting a fan, consider the minimum duct diameter of 150mm for optimal airflow and to meet some regulations. Also, look for low-noise models if kitchen noise is a concern, and for a decent IP rating (like IPX4 for splash resistance) if the area is exposed to water.
In summary, calculate your kitchen's volume, use 15–20 air changes per hour as a target, ensure your fan meets or exceeds the minimum regulatory extraction rate, and choose a model with appropriate duct size and IP rating for your needs.
For example, the Airflow iCON60 extractor fan has an extraction rate of 78 l/s (280.8 m³/h), comfortably exceeding most regulatory minimums and suitable for most home kitchens.
Before starting any work on replacing a kitchen extractor fan, power to the extractor must be isolated and switched off, and electrical alterations should be done by a qualified person such as an electrician or appliance technician.
When choosing between recirculating and vented kitchen extractor fans, consider the kitchen layout and personal preferences. Vented extractors, which remove air directly outside, help prevent condensation and grease build-up, but require ducting that can be tricky to install if the kitchen isn't near an external wall. On the other hand, recirculating cooker hoods, which use filters to clean the air before releasing it back into the kitchen, are more flexible in terms of placement and easier to install.
Regardless of the type of kitchen extractor fan you choose, regular maintenance and energy efficiency are important factors to consider. For recirculating models, charcoal filters need replacing every few months, while grease filters in vented extractors should be washed regularly.
Lastly, remember that the minimum distance an extractor can be above a hob is 650mm for an electric hob and 750mm for a gas hob. Additionally, the cut-out made in the kitchen unit accommodating the previous extractor may be too big or small for the new extractor, meaning alterations and adaptations would need to be made.
In conclusion, choosing the right kitchen extractor fan is crucial for improving the appearance, condition, and air quality of the kitchen. With this guide, you're well-equipped to make an informed decision. Happy cooking!
- The calculation of your kitchen's volume is essential, as it helps determine the extent of ventilation needed.
- Aim for 15 to 20 air changes per hour in your kitchen for effective ventilation during cooking.
- The required extraction rate can be calculated by multiplying the room volume by the number of air changes per hour.
- When selecting a fan, ensure it meets or exceeds the minimum regulatory extraction rate and has an appropriate duct size and IP rating.
- The Airflow iCON60 extractor fan has an extraction rate that comfortably exceeds most regulatory minimums, making it suitable for many home kitchens.
- Before starting any work on replacing a kitchen extractor fan, power to the extractor must be isolated and switched off, and electrical alterations should be done by a qualified person.
- When choosing between recirculating and vented kitchen extractor fans, consider the kitchen layout, personal preferences, and installation challenges.
- Regardless of the type of kitchen extractor fan you choose, regular maintenance and energy efficiency are important factors to consider.
- Remember that the minimum distance an extractor can be above a hob is 650mm for an electric hob and 750mm for a gas hob, and the cut-out in the kitchen unit may need alterations for a proper fit.
