Surround Air Multi-Tech A4000 Silver air purifier

Multi-Tech A4000 Odor Sensor. Detects level of odor-causing pollutants, adjusts fan speed accordingly (in auto mode).
Dust Sensor. Detects level of dust & allergens, adjusts fan speed accordingly (in auto mode).

- Pre-Filter for larger particles.
- Anti-Bacterial non-woven filter.
- Carbon Filter absorbs chemicals, smoke and odors.
- HEPA traps 99% of dust/allergens.
- Cold-Catalyst Filter decomposes harmful gases and micro-organisms.
- Air-purifying Ionizer removes variety of pollutants.

Quiet Operation. Even on the powerful high setting, the fan operates smoothly and quietly.

No Maintenance. Simply replace the spare filter set every 6-12 months, at a very affordable price of $35. The spare filter set easily snaps into place from the bottom of the unit.

Timer Function. Allows you the option to operate the air purifier for 1, 2, 4 or 8 hours before automatically shutting off.

Remote Control. Enables you to control the air purifier from across the room. Very convenient if the A4000 is being used in the bedroom, preventing you from having to get out of bed to change the settings.