Hopefully this demystifies what makes the smaller Panasonic Whisper fans special.
FV-08VK1
Now compare it to the FV-08VQ3
It is the variable speed DC motor which allows for it to maintain the rated air flow.
FV-08VK1
Static Pressure (in inches w.g.) 0.1
0.25
Air Volume (CFM) 80 @ 0.1" static pressure
82 @ 0.25" static pressure
Noise (sones) <0.3 at 0.1" static pressure
Power Consumption (Watts) 11.1 at 0.1" static pressure
21.5 at 0.25" static pressure
Energy Efficiency (CFM's/Watt) 7.2 at 0.1" static pressure
3.8 at 0.25" static pressure
Speed (RPM) 733 at 0.1" static pressure
987 at 0.25" static pressure
Current (Amps) .09 at 0.1" static pressure
.17 at 0.25" static pressure
Power Rating (V/Hz) 120/60
Motor Type DC
Type of Motor Bearing Ball
Thermal Fuse Protection Yes
Blower Wheel Type Sirocco
Duct Diameter (inches) 4"
Now compare it to the FV-08VQ3
Air Volume (CFM) 80 (57 at 0.25" static pressure)
Noise (sones) 0.3
Power Consumption (Watts) 22.8 (22.6 at 0.25" static pressure)
Energy Efficiency (CFM's/Watt) 3.5 (2.5 at 0.25" static pressure)
Speed (RPM) 716 (909 at 0.25" static pressure)
Current (Amps) 0.19 (0.19 at 0.25" static pressure)
Power Rating (V/Hz) 120/60
Motor Type Condenser
It is the variable speed DC motor which allows for it to maintain the rated air flow.