Company: General Filters Product: 4400A Fan-assist Evaporative Humidifier Description: The GeneralAire model 4400A fan-assist evaporative humidifier offers 19 gallons per day and features a ...

"In general, air purifiers work by taking air in through a variety of filters and then sending it out particle-free. There are five basic types of filters -- electrostatic, ionizer, ozone, UV and ...

Ultrasonic humidifiers use rapid vibrations to propel a mist of water into your air. Evaporative humidifiers, meanwhile, heat the water until it is steam, then use a fan to push it through a filter.

Company: General Filters Product: GeneralAire 4400A Description: The GeneralAire model 4400A fan-assist evaporative humidifier offers 19 gallons per day and features a space-saving patented design ...