All4Elements - Sells a range of Ultrasonic Room Humidifiers. Provides a buying guide and addresses the reasons to humidify.
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.
