Table 1.

Specifications of both air purifiers.

Specifications	Air Purifier I (AP I)	Air Purifier II (AP II)
Dimensions (mm)	18 × 18×50	28 × 54×30
Weight	3.2 kg	5.7 kg
Wattage	16 Watts	30 Watts
Noise level	40 dB	22–45 dB
Coverage Area	19 m2	35 m2
CADR	120 m3/h	150 m3/h
Power Requirement	AC 220V/50 Hz	AC 110–120 V/50 Hz