What Is Perimeter Extraction In A Cooker Hood?

Perimeter extraction in a cooker hood refers to a design feature that enhances the efficiency of capturing and extracting steam, grease, and odours generated during cooking.

In this post, I’ll explain how it works, its pros and cons and some more helpful information on the topic.

Let’s get into it!

You May Also Like
The Different Types Of Cooker Hoods For Your Kitchen

What Is Perimeter Extraction In A Cooker Hood?

Perimeter extraction is when the cooker hood sucks in the air from a vent running around the edge of the appliance rather than straight up the middle, as is most common.

Using this extraction technique can reduce the noise caused by cooker hoods and optimize the effectiveness of the extraction by exploiting the ‘venturi effect’.

Air accelerates as it passes through the constricted extraction space of the panel, slows down immediately inside the hood and is then easily expelled without the need for any particular pressure.

Having perimeter extraction also increases the extraction area over the hob, allowing you to have a wider hob than the cooker hood.

Ceiling cooker hood with perimeter extraction
I’ve highlighted the ‘perimeter’ in red so you can see.

Benefits of Perimeter Extraction

  • Efficiency: By focusing the extraction around the perimeter, these hoods can operate more effectively at lower speeds, reducing energy consumption and noise. The directed airflow improves the capture of pollutants before they spread into the kitchen space.

  • Aesthetics and Space: They often have a sleek, modern design. The focused intake area can also allow for a more compact and less obtrusive hood design, which can be particularly appealing in contemporary kitchen aesthetics.

  • Filter Coverage: The design often allows for larger or more strategically placed filters, which can improve filtration and make maintenance (like cleaning or replacing filters) more efficient.

Drawbacks of Perimeter Extraction

  1. Cost: These cooker hoods can be more expensive than traditional hoods. The advanced design and technology that improve their efficiency and aesthetics often come at a higher initial purchase price.

  2. Performance Expectations: While they are designed to be more efficient, the actual performance can vary depending on the kitchen layout, cooking habits, and how well the system is maintained. In some cases, you might not experience a noticeable difference in extraction efficiency compared to traditional systems.

  3. Limited Choice: In terms of available models and styles compared to traditional extraction hoods.

You May Also Like
Cooker Hood Dimensions & Installation Factors – A Complete Guide

How much more expensive are cooker hoods with perimeter extraction?

The cost difference between cooker hoods with perimeter extraction and those with traditional extraction can vary widely based on several factors, including brand, model, features, and the market you’re in.

However, as a general guideline:

Perimeter extraction cooker hoods are typically positioned in the mid to high range of the market.

Their advanced design and technology for more efficient and quieter operations usually command a premium.

This premium can be anywhere from 20% to 50% more expensive than basic traditional extraction hoods, depending on the specific models and features you’re comparing.

You May Also Like
Kitchen Island Cooker Hoods – Everything You Need To Know



Michael from

Michael is a kitchen designer from the UK. He's been designing and project managing new kitchen installations for over 10 years. Before that, he was an electrician and part of a team that fitted kitchens. He created Kitchinsider in early 2019 to help give people advice when it comes to getting a new kitchen.