Capture Efficiency summarizes the hood’s behavior with regard to the effective elimination of odors, low energy consumption, cleaner and moisture-free air, no gas and particles after cooking, and noiseless functioning. Capture Efficiency testing allows data comparison in order to evaluate the best performances in terms of Indoor Air Quality (IAQ) and Energy Efficiency Ratio (E.E.R.) of range hoods, downdrafts and
aspiration hobs.

The challenge
Following the introduction of the Energy Efficiency Label, hoods are compared on the Efficiency Energy Class. Thus, it is possible to know the hood energy consumption but not the amount of vapors, odors and fumes absorbed by hood, in comparison with smokes and pollutants that spreads out in kitchen. The new method developed by 3P Engineering allows for evaluating the best balance between flow rate and noise, as well as the capacity of hoods on preventing the diffusion of vapors and smells during cooking, saving energy and guaranteeing IAQ. Visual, instrumental and olfactory procedures are used to measure the amount of fumes, vapors and odors generated by cooking, that are captured by hood.

Capture efficiency tests allow to rate a range hood’s behavior with regard to the operating conditions (i.e. kind of the cooktop, hobs thermal power, cooking method, installation height) and the designing features during hood product development (i.e. geometry, the suction areas position and shape, motor). Thanks to the 3P Engineering method, it is also possible to avoid useless noise using hoods suitable for the size of each cooktop: the capture efficiency grows proportionally with the airflow rate but beyond a certain level, an increasing airflow rate doesn’t improve hood efficiency, only intensify noise. It is so possible to combine the appropriate hood model for each hob without oversizing hood blower and wasting energy due to its inadequate power.

Why Capture Efficiency of 3P Engineering
3P Engineering:
• is an independent laboratory. No conflicts of interest on the analysis carried out and impartiality
of the data obtained: complete reliability (according to ILAC-MRA – UNI/EN/ISO/IEC 17025 – General
requirements for the competence of testing and calibration laboratories);
• has got the longest and in-depth experience of Capture Efficiency: 16 years of analysis in kitchen
hoods and cooktops, providing tests for international leading companies;
• is the unique company in Italy and one of the first laboratories in Europe to be accredited for the
measurement of FDE (IEC 61591:1997) to identify the precise class of consumption set in the Energy
Efficiency Label