Box Cooker Hoods (T-Shape Chimney Hoods): The Complete Buying Guide
Discover everything you need to know about box cooker hoods (also known as T-shape chimney hoods), including how they work, benefits, sizes, extraction rates and how to choose the right one for your kitchen.
What Is a Box Cooker Hood?
A box cooker hood, often called a T-shape cooker hood, is a wall-mounted chimney hood with a flat canopy and vertical chimney stack. The clean, squared design creates a bold focal point while delivering powerful extraction directly above your hob.
Unlike integrated or visor hoods, T-shape models are designed to be seen. They combine high performance with a contemporary aesthetic, making them ideal for modern and minimalist kitchens.
How Does a T-Shape Cooker Hood Work?
Box cooker hoods remove:
- Steam
- Grease particles
- Cooking odours
- Airborne moisture
They do this using a motor-driven fan that pulls air through grease filters and either:
- Extracts it outside via ducting (extraction mode), or
- Recirculates it back into the room through carbon filters (recirculation mode).
Extraction vs Recirculation
Extraction (Ducted Out)
- Removes air completely from the kitchen
- Most effective method
- Requires external wall or ceiling vent
Recirculation
- Filters and returns air to the room
- Easier installation
- Requires carbon filters
- Slightly less powerful than ducted extraction
For maximum performance and improved air quality, ducted extraction is usually recommended where possible.
Key Benefits of Box Cooker Hoods
1. Powerful Extraction Rates
T-shape cooker hoods typically offer higher airflow rates than smaller built-in models. This makes them ideal for:
- Open-plan kitchens
- Heavy cooking (frying, grilling, wok cooking)
- Large hob surfaces
Extraction rates often range between 400m³/h to 700m³/h, depending on the model.
2. Modern, Statement Design
The squared canopy and chimney create a sleek, professional look. Popular finishes include:
- Brushed stainless steel
- Black glass
- White glass
- Matte black
They complement induction, gas and ceramic hobs beautifully.
3. Larger Capture Area
The wide, flat canopy improves steam capture efficiency, especially on front cooking zones where steam can escape more easily.
4. LED Lighting
Most box cooker hoods include integrated LED lighting, providing:
- Clear visibility over your hob
- Lower energy consumption
- Longer bulb lifespan
This enhances both functionality and ambience.
What Size Box Cooker Hood Do I Need?
Your cooker hood should match or slightly exceed the width of your hob.
Common Sizes:
- 60cm – Ideal for standard 4-zone hobs
- 70cm – Slightly wider coverage for improved capture
- 80cm – Popular upgrade size
- 90cm – Perfect for range cookers or wide hobs
For optimal performance, your hood should be at least the same width as your hob.
What Extraction Rate Do I Need?
Your cooker hood should be able to change the air in your kitchen 10–12 times per hour.
To calculate:
- Measure kitchen volume (Length × Width × Height)
- Multiply by 10
Example:
Kitchen size = 4m × 3m × 2.4m
Volume = 28.8m³
Recommended extraction = approx. 288–350m³/h minimum
For open-plan kitchens, aim higher (500m³/h+).
Noise Levels Explained
Modern T-shape cooker hoods typically range between:
- 50–65dB on standard speeds
- Up to 70dB on boost mode
Look for multi-speed settings so you can adjust power and noise based on what you're cooking.
Installation Considerations
Height Above Hob
- Gas hobs: Minimum 65–75cm
- Electric/Induction: Minimum 60–65cm
Always check manufacturer guidelines.
Ducting Diameter
Standard ducting sizes:
- 120mm
- 150mm (recommended for higher airflow)
Wider ducting improves efficiency and reduces noise.
Wall Strength
T-shape hoods are heavier than integrated models and must be securely fixed to a solid wall or reinforced surface.
Are Box Cooker Hoods Energy Efficient?
Most modern models include:
- LED lighting
- Energy-efficient motors
- A to C energy ratings
While extraction uses power, the overall consumption is relatively low compared to other kitchen appliances.
Box Cooker Hoods vs Other Types
| Type | Best For | Visibility | Power |
|---|---|---|---|
| Box / T-Shape | Modern kitchens | High | High |
| Integrated | Hidden design | Low | Medium |
| Angled | Contemporary spaces | High | Medium-High |
| Island | Central hobs | High | High |
Who Should Choose a T-Shape Cooker Hood?
A box cooker hood is ideal if you:
- Have a wall-mounted hob
- Want a modern focal point
- Cook frequently
- Have an open-plan layout
- Need strong extraction
Final Thoughts
Box cooker hoods (T-shape chimney hoods) combine powerful extraction, sleek design, and practical performance. They’re one of the most popular cooker hood styles in UK kitchens for good reason.
By choosing the correct size, extraction rate and installation method, you’ll dramatically improve air quality, reduce grease build-up, and keep your kitchen fresher for longer.
If you're upgrading your kitchen ventilation, a T-shape cooker hood is a stylish and highly effective solution.
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