All4Elements: Sells a range of Ultrasonic Room Humidifiers. Provides a buying guide and addresses the reasons to humidify.
e-Humidifiers: Offers the Thermolec line of furnace humidifiers. Includes safety and installation information.
Miller Electric: Produces a whole house furnace humidifier that attaches to a forced air heating system. Includes photos and installation instructions.
Spring Air Products: Markets a on-furnace humidifier. Provides installation instructions as well as a FAQ page.
SureSource: Presents the Bemis product line, including accessories and parts.
Vesper Research: Sells the a non-electric room humidifier as well as a water purifying pitcher. Offers testimonials and policies.
