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Exhaust hood or extractor? Understand the differences and which to choose for the kitchen

Get to know the characteristics and differences between a range hood or a purifier to ensure the ideal choice for your kitchen

By CASACOR Publisher

Submitted at Mar 5, 2025, 9:24 AM

08 min de leitura
Apartment by architect Bárbara Dundes.

Apartment by architect Bárbara Dundes. (Fran Parente)

In the quest for efficiency and style in the kitchen, many people face the question: extractor hood or air purifier? These appliances aim to improve air quality but have different functionalities, costs, and suitability for certain projects. Understanding their operation can help you decide which one best fits the available space and your daily use.

What is an extractor hood?


The extractor hood is one of the main appliances in the exhaust category, offering efficiency in eliminating vapors and odors. The extractor hood system connects to a duct that leads the air outside, ensuring renewed and healthy air circulation. There are various types of extractor hoods, such as wall-mounted, island, and built-in, each with its own particularities.
Living Ametista by architect Michael Zanghelini.

Living Ametista by architect Michael Zanghelini. CASACOR Santa Catarina project | Itapema 2024 (Fábio Jr Severo/CASACOR)

Besides its functional purpose, the extractor hood can also become a design element in the kitchen, with models ranging from traditional styles to more modern and minimalist ones. Installing an extractor hood typically requires planning for air exhaust ducts, which may necessitate some adaptations in the structure of the project.
Bia Kestering - Cosmopolitan. CASACOR Santa Catarina project | Itapema 2024.

Bia Kestering - Cosmopolitan. CASACOR Santa Catarina project | Itapema 2024. (Lio Simas/CASACOR)

This piece is recommended for people who frequently use the kitchen to prepare meals. It is also suitable for larger and more robust projects.

What is an air purifier?


Junior Ordonez Space Ceres CASACOR Sergipe 2022 kitchen countertop sink wine cellar

Junior Ordonez - Space Ceres. CASACOR Sergipe project 2022. (Gabriela Daltro/CASACOR)

Unlike the extractor hood, the air purifier does not require external ducts. It works by filtering the air through activated carbon filters, which retain impurities and return clean air to the project. Common in apartment kitchens, this makes the air purifier a practical and economical option, ideal for places where installing a duct is not feasible. The air purifier is also a good choice for those looking for a compact and easy-to-install solution. Although it does not offer the same exhaust efficiency as the extractor hood, it fulfills the task of reducing odors and smoke well, becoming a functional and versatile piece in many kitchens.

How to choose between extractor hood or air purifier?


Sustainable beach house becomes a refuge in the middle of the Atlantic Forest. Project by Patrícia Martinez. In the photo, kitchen with island and stools.

Projeto de Patrícia Martinez. (Fran Parente/Divulgação)

The choice between extractor hood or air purifier depends on several factors, including the kitchen layout, frequency of use, and the type of food preparation that is typically done. If the priority is exhaust power and you have a structure for ducts, the extractor hood may be the best choice. It effectively removes grease and intense odors, ideal for those who cook like a chef at home. On the other hand, if space is limited and you cannot or do not want to make structural changes in your kitchen, the air purifier becomes an attractive option. It provides ease of installation and maintenance while also being more affordable in terms of cost.
The apartment has a view of four postcards from Rio de Janeiro. Project by João Panaggio. In the photo, dining room and kitchen with wooden wall.

Projeto de João Panaggio. (Foto: Denilson Machado, do MCA Estúdio / Produção visual: Aldi Flosi/Divulgação)

In addition to technical factors, design and style should also be considered. Extractor hoods tend to offer more options in terms of visual and finish, something to consider if aesthetics are important in your kitchen. Evaluating your budget, available space, and usage needs are essential steps in deciding between extractor hood or air purifier.
Meet the apartment of architect Bárbara Dundes in São Paulo. In the photo, integrated kitchen with counter and dining room on the balcony.

Project by Bárbara Dundes. (Fran Parente/Disclosure)

Efficiency and economy


For those seeking efficiency, the extractor hood stands out for its high suction capacities. In contrast, the air purifier offers a lower initial cost and a simplified installation, saving time and money.

Maintenance and practicality


Maintenance is another important aspect. Extractor hoods generally require fewer filter replacements, while air purifiers need regular carbon filter replacements to maintain their efficiency.

Aesthetic impact


If style is a determining factor, extractor hoods offer a variety of designs that can complement or highlight the kitchen decor. The air purifier, more discreet, may be the choice for projects with less space or a more minimalist design. CASACOR Publisher is a creator of exclusive content, developed by the Technology team of CASACOR based on the knowledge base of casacor.com.br. This text was edited by Yeska Coelho.