User Manual Levoit LV-H133 Air Purifiers

The only information I have on your question is this.
When changing the filter for this device, use the Levoit LV-H132-RF True HEPA Filters. If the Filter Reset button is on, the air filter lifetime must be reset. There are 2. Press and hold the Filter Reset button for 3 seconds while the air purifier is on.
The motors do burn out occasionally also. If the reset has been done and it still doesn't work it's probably the motor.

The noise level for this air purifier is between 25dB and 54dB depending on the fan speed.

Levoit LV-H133 Air Purifier
The Levoit LV-H133 is ENERGY STAR qualified with a rated power of 47 Watt. Per watt, the smoke-free CADR is 6.0, which is above the average. ... The True HEPA filter traps dust, smoke, and other airborne pollutants as small as 0.3 microns.

Our products are designed and tested in California, and manufactured in China.

After replace the water filter, the WATER FILTER button (red light) must be pressed and held down for 3 seconds until the red light goes off (or turn green).