How do downdraft cooker hoods work?

A downdraft cooker hood works by extracting cooking fumes, smoke, and odours downwards rather than upwards like a traditional overhead extractor. These systems are designed to be installed behind or beside a hob, often on an island or against a wall, and remain hidden within the worktop when not in use.

How It Works

Retractable Mechanism

• When activated, the downdraft extractor rises from the worktop, typically at the push of a button or via touch controls.
• Some models have a fixed, flush-mounted vent alongside the hob instead of a retractable system.

Extraction Process

• The built-in motor draws in steam, smoke, and cooking odours horizontally from the hob.
• The air is either vented outside through ducting or recirculated back into the kitchen after passing through carbon filters.

Filtration System

• Grease filters trap oil and grease particles, preventing buildup in the kitchen.
• Carbon filters (for recirculating models) help remove odours before releasing clean air back into the room.

Discreet Storage

• When switched off, the extractor lowers back into the worktop, making it invisible and maintaining a sleek kitchen design.

Key Benefits

• Space-Saving: Ideal for open-plan kitchens or islands without overhead units.
• Aesthetic Appeal: Maintains a clutter-free look when not in use.
• Flexible Installation: Suitable for kitchens where ceiling or wall-mounted extraction isn’t practical.

Limitations to Consider

• Less Effective for High Steam Output: Since steam naturally rises, downdraft systems may struggle with boiling pans at full power.
• Requires Adequate Venting Space: Ducted models need sufficient space for underfloor or wall ducting.

Downdraft extractors are a stylish and practical solution for modern kitchens, but their effectiveness depends on factors such as hob placement, room ventilation, and cooking habits.