A cooker hood is one of the most important appliances in any kitchen. It removes steam, smoke, and cooking odours, helping maintain air quality and preventing grease buildup on surfaces. But with so many sizes, types, and performance specs available, choosing the right model can feel overwhelming.
The two most critical factors are ensuring the hood is at least as wide as your hob and calculating the required extraction rate based on your kitchen’s volume. Beyond that, you need to decide between ducted and ductless venting, consider noise levels, and pick a style that fits your space. This guide breaks down everything you need to know, from sizing and installation to maintenance and cost.
Whether you are replacing an old hood or fitting a new kitchen, understanding these fundamentals will help you make an informed purchase. For a broader look at kitchen worktop materials, see our Kitchen Work Surface – Complete Guide to Types and Prices.
What size cooker hood do you need? (60cm, 70cm, 90cm)
Overview of common cooker hood sizes
| Size | Type / Style | Typical Extraction Rate (m³/h) | Noise Level (dB) | Filter Type | Installation Method | Price Range (£) | Best For |
|---|---|---|---|---|---|---|---|
| 60 cm | Wall-mounted, integrated, canopy | 250–450 | 55–65 | Grease + optional charcoal | Under cabinet or wall | 80–250 | Small kitchens, standard 4-burner hobs |
| 70 cm | Canopy, wall-mounted | 350–550 | 55–65 | Grease + optional charcoal | Wall or under cabinet | 120–350 | Standard hobs with 5 burners |
| 90 cm | Canopy, island, wall-mounted | 450–700+ | 60–70 | Grease + optional charcoal | Wall or ceiling (island) | 200–500+ | Large hobs, range cookers, open-plan kitchens |
| Integrated / Built-in | Telescopic, slide-out | 200–400 | 50–60 | Grease + charcoal (for ductless) | Inside cabinet | 100–300 | Minimalist kitchens, low ceilings |
Key insights about cooker hood sizing
- Size is the first decision: match hood width to hob width (or slightly wider).
- Extraction rate (m³/h) must be adequate for hob size and kitchen volume; gas hobs need higher rates.
- Noise level (dB) is often overlooked; 65 dB is standard, quieter models (50–60 dB) are available.
- Ducted is more effective than ductless for performance; ductless is easier to install.
- Black and stainless steel are the most popular colours, but white and integrated designs suit modern kitchens.
- Installation complexity varies greatly: integrated vs wall-mounted vs island hoods.
Key cooker hood facts at a glance
| Fact | Detail |
|---|---|
| Standard widths | 60 cm, 70 cm, 90 cm. |
| Minimum extraction rate for gas hob | 10 times kitchen volume per hour. |
| Ductless hoods require charcoal filters | Replaced every 3–6 months. |
| Most cooker hoods have at least 3 speed settings | High for cooking, low for continuous ventilation. |
| LED lighting is standard on modern models | Energy-efficient and bright. |
| Average cost range for most models | £80 to £500. |
| Clearance for electric/induction hobs | Minimum 65 cm (650 mm) from hob to hood base, per Wren Kitchens and AO.com. |
| Clearance for gas hobs | Minimum 75 cm (750 mm) to prevent heat damage, per Wren Kitchens and AO.com. |
| Hood should be at least as wide as the hob | If narrower, performance drops significantly, per Bosch buying guide. |
For electric and induction hobs, maintain at least 65 cm clearance. For gas hobs, increase to 75 cm. These minimums are based on UK building regulations and manufacturer guidelines. Sources: Wren Kitchens, AO.com.
What are the different types of cooker hoods and how do they work?
Ducted (extraction) vs ductless (recirculation)
The most fundamental choice is between ducted and ductless venting. A ducted hood vents air outside through a pipe, removing moisture and odours completely. According to Consumer Reports, this is the most effective option and is highly recommended if ducting is possible. A ductless hood, on the other hand, filters air through a charcoal filter and returns it to the kitchen. This is less effective at removing heat and odours but works well when external ducting is not feasible, as noted by AO.com and DIY Kitchens.
Wall-mounted, integrated, island, and canopy hoods
Wall-mounted hoods attach to the wall above the hob and are the most common style. Integrated hoods slide into a cabinet and are nearly invisible, ideal for sleek kitchens. Island hoods are suspended from the ceiling, requiring proper ducting. Canopy hoods are wider and more angular, often used over large ranges. Brands like AEG and Kaiser offer a range of styles across these categories.
What is a ductless cooker hood?
A ductless cooker hood, also called a recirculation hood, does not require an external vent. It pulls air through a grease filter and then a charcoal filter before releasing it back into the room. These models are easier to install but need regular charcoal filter replacement to remain effective. They are a practical solution for flats or kitchens without external wall access, as highlighted by AO.com.
Charcoal filters in recirculation hoods typically need replacement every 3–6 months. Set a calendar reminder to maintain performance and avoid odour buildup.
How powerful and quiet should your cooker hood be?
Calculating the right extraction rate
The extraction rate, measured in cubic metres per hour (m³/h), determines how quickly a hood removes air. The industry standard is that a hood should filter the room’s air 10 times per hour. To calculate your needed rate, measure your kitchen’s width × depth × height (in metres) to get the volume, then multiply by 10. For example, a kitchen of 3.6 m × 2.4 m × 2.8 m has a volume of 24.1 m³, requiring a minimum extraction rate of 241 m³/h. This rule is cited by Wren Kitchens, AO.com, and K-C-A.
For gas hobs, especially high-output ones, you may need a higher rate because of the heat and combustion byproducts. In the US, power is measured in CFM (cubic feet per minute). Consumer Reports and Lowe’s suggest at least 350 CFM for heavy cooking, and 1 CFM per 100 BTU for gas ranges. A shortcut: multiply your hob width (in inches) by 10 to estimate minimum CFM.
Noise level and speed settings
Noise is measured in decibels (dB). Standard hoods operate around 65 dB; quieter models fall between 50–60 dB. Lower dB ratings often come with a higher price. A key strategy, recommended by Wren Kitchens and Consumer Reports, is to choose a powerful hood that can run on a lower, quieter setting for most of the time rather than always on maximum. Look for at least two speeds: a high setting for active cooking and a very low setting for background ventilation after cooking.
Colour and design considerations
Black and stainless steel are the most popular finishes, but white and integrated designs are also common. The hood should be visually proportionate to the kitchen; an oversized hood in a small space can dominate, while a tiny hood over a large hob looks awkward, according to Wren Kitchens and a YouTube guide.
A very powerful hood that is always noisy can be disruptive. Check the dB rating at each speed and test the sound if possible. A hood around 55 dB on its low setting is comfortable for daily use.
How to install a cooker hood extractor fan
Step-by-step installation overview
Installation complexity depends on the hood type and whether you choose ducted or ductless. For ducted models, you need to run ducting from the hood to an external wall or through the roof. This may require cutting holes and working with electrical wiring. UK building regulations set minimum clearance heights: 65 cm for electric/induction hobs and 75 cm for gas hobs, per UK Building Regulations and AO.com.
General steps: measure and mark the position, cut a hole for ducting if needed, mount the bracket or cabinet, connect the ducting, secure the hood, and connect the electrical supply. Always turn off the power at the circuit breaker before starting electrical work.
Can you install a cooker hood yourself?
Many homeowners can install a cooker hood if they are comfortable with basic tools and electrical work. Integrated and ductless hoods are simpler because they don’t require external ducting. However, for ducted installations where you need to cut into walls or ceilings, hiring a professional is recommended. Electrical connections must comply with local regulations, so if you are unsure, consult an electrician.
Always check the manufacturer’s mounting distance. For gas hobs, a minimum 75 cm clearance is essential to avoid fire risk. Ensure the hood is securely fixed and the electrical supply is correctly rated.
How have cooker hood designs evolved over the years?
- Pre-2000s: Basic canopy and wall-mounted hoods with simple fans and no frills.
- 2000s: Introduction of integrated and telescopic hoods for concealed installation.
- 2010s: Silent technology, LED lighting, and energy efficiency ratings become common.
- 2020s: Smart features (WiFi, app control), sleek minimalist designs, and improved recirculation systems.
- 2025 Trend: Ultra-quiet models with high extraction rates, black finish popularity, and ductless innovation.
What is clear and what is uncertain about cooker hoods?
| Established information | Information that remains unclear |
|---|---|
| A 60 cm hood is standard for a 60 cm hob; a 90 cm hood for a 90 cm hob. | Exact noise level varies by brand and model; check dB ratings in specs. |
| Ducted hoods remove steam and odours outside more effectively than ductless. | Installation difficulty varies by kitchen layout and hood type. |
| Extraction rate is measured in m³/h; higher is better for large kitchens. | The ‘best’ brand is subjective and depends on budget and style preference. |
| Cooker hoods must be installed at a minimum height above gas hobs (65–75 cm). | Whether a hood is suitable for an island depends on ceiling mounting and ducting options. |
| Charcoal filters are needed for ductless operation and must be replaced regularly. | Effectiveness of recirculation in large open-plan kitchens can be lower than ducted. |
Why does the right cooker hood matter for UK kitchens?
UK kitchens often follow standard cabinet widths, with 60 cm being the most common hob size. However, gas hobs with five burners frequently require 70 cm or 90 cm hoods for full coverage, as noted by Wren Kitchens. Open-plan living, increasingly popular in UK homes, demands higher extraction rates – often 600 m³/h or more – to effectively remove cooking odours from combined living spaces.
For rental properties or kitchens without external wall access, ductless hoods offer a practical alternative. Retailers like AO.com and Appliances Direct provide convenient delivery and a wide selection, but it is essential to verify dimensions and installation requirements before purchasing. Brands such as AEG, Kaiser, and Cookology each have distinct strengths: AEG is known for build quality, Kaiser for design, and Cookology for value, according to the Energy Saving Trust.
What do experts say about cooker hoods?
“From stylish vertical hoods to sleek integrated cooker hoods, all are designed to keep your kitchen air clean and fresh.”
– AEG
“A cooker canopy hood is a very simple and convenient way of removing smells and odours from your kitchen.”
“Premium wall-mounted, built-in, and island cooker hoods in modern and classical styles.”
– Kaiser
What should you do next after choosing your cooker hood?
Once you have determined the correct width, type, extraction power, and noise level, the next steps are straightforward: measure your kitchen and hob, decide on ducted or ductless, choose a style and colour, compare rates and decibels, check installation requirements, and then purchase from a reputable retailer. For a comprehensive guide to kitchen worktops, see our Kitchen Work Surface – Complete Guide to Types and Prices. Then schedule installation or, if you are confident, follow manufacturer instructions to fit the hood yourself.
Frequently asked questions about cooker hoods
How do I clean and maintain a cooker hood?
Clean the grease filter monthly (most are dishwasher safe). Replace charcoal filters every 3–6 months for ductless hoods. Wipe the exterior with a damp cloth.
What brand of cooker hood is most reliable?
AEG, Siemens, and Bosch are known for reliability and build quality. Kaiser offers premium design, while Cookology provides good value for money.
Can I get a cooker hood delivered from Appliances Direct / AO?
Yes, both Appliances Direct and AO.com offer delivery across the UK, often with next-day or nominated day options.
What is the best cooker hood for my kitchen?
The best cooker hood depends on your hob size, kitchen layout, budget, and style preference. Start by determining the correct width (60 cm, 70 cm, or 90 cm), then choose a type and performance level that matches your cooking habits.
How much does a cooker hood cost?
Basic models start from around £80, mid-range hoods cost £150–£350, and premium models can exceed £500.
How do I measure for a cooker hood?
Measure the width of your hob – the hood should be at least that wide. Also measure the height from hob to ceiling to ensure correct clearance (65 cm for electric, 75 cm for gas).
Can a cooker hood be installed over an island?
Yes, island hoods are designed for ceiling mounting. Check your ceiling structure and ducting options before purchase.
What is the difference between a cooker hood and an extractor fan?
The terms are often used interchangeably. A cooker hood is an appliance that sits above the hob, while an extractor fan may also refer to a wall or window fan. Both remove air, but hoods are more effective directly above the cooking surface.
Are ductless hoods effective?
Ductless hoods are less effective than ducted at removing heat and heavy odours, but they are a good solution when external ducting is not possible. Regular filter changes improve performance.
James Morgan is Senior Reporter at readingwire.co.uk, covering breaking UK and world news, politics and current affairs.