Localised extraction at odor sources (kitchen, bathroom)

Targeted ventilation removing odor/moisture at the point of generation rather than diluting it building-wide.

Cost
Low
Upkeep
Occasional
Lifespan
Extraction fan itself: 10-15 years typical bathroom/kitchen extractor fan life; ducting far longer
Embodied carbon
Low
Space / material use
Low
Output timing
On-demand/controllable
Skill to repair
Basic

Note: Cost, carbon and footprint are rated against the other options for this same need, not in absolute terms.

Inputs

Outputs

Sources

What this page does not tell you

No sizing or quantities: how much a technique yields, and how much a household needs, both depend on the build and the people, so the catalogue compares options rather than dimensioning them. It carries no bill of materials and no build sequence, and it is written for an oceanic, clay-soil climate (Normandy, France). Regulatory notes are indicative and need confirming locally.