Air Conditioning for Home Owners - Interactive manual includes basic troubleshooting and maintenance tips for do-it-yourselfers. Feedback form provided for technical questions.

Air Conditioning Information and Diagnosis - Diagnostics chart for troubleshooting. Tips on air filters, refrigerant charging, thermostats, and operation.

Allexperts Repair Q and A - Volunteer mechanics answer questions via e-mail. Volunteers can be evaluated based on credentials and user ratings.

Humidifiers Direct - Offers Ultrasonic cool mist humidification for home, travel and the office at affordable prices!