Active diffuser

An air supply outlet with a local fan to deliver air from the plenum through the diffuser into the conditioned space.

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Building upon previous years' growth, active diffusers are warming up to become new gems on the market.

Luxury's burning bright in home fragrance

The package includes active diffusers at the front and rear of the car as well as an active rear spoiler, which only generate downforce when required, activating automatically, in response to myriad factors, including driver input.

Details: creme de la creme at Geneva Motor Show-in the rarefied world of supercars

There also are active diffusers on the market that work in conjunction with a thermostat.

Churn down the heat: underfloor HVAC systems allow easy space reconfiguration and improve comfort