Ceiling fans can help in another way, though. Instead of cranking up the air conditioner (a huge waste of energy), turn it to low and use it with a ceiling fan, acording to Consumer Reports.

Product Description
56" Industrial and Home Ceiling Fan
Specifications
•Powerful Industrial Grade Motor
•5 Speed Switch
•3 All Metal White Blades
•56 INCH Ceiling Fan
•For cooling during summer, heat distribution during the winter.
•Motor has die-cast housing & permanent pre-greased sealed ball bearings
•High efficiency motor is very economical
•Easily installed and requires practically no maintenance
•Fans comes complete with Metal blades and all mounting hardware
•Eliminates cold spots
•Helps maintain an even temperature
•Pushes down warm air that normally collects in the upper ceiling area of most industrial and commercial buildings (warm air migrates to ceiling fan area)
•By utilizing the 5 speed the fan generates constant supply of fresh air that migrates to the ceiling, it pushes the warm air down to people level, thereby effecting a savings in heating costs
•Provides continual air circulation which eliminates stagnant air and creates a comfortable warming breeze
•Improves workplace comfort and strengthens worker morale
•Dual purpose for both heat reclamation and warm weather cooling
•Saves 25% to 35% in cooling costs
•Ideal for both winter heat distraction and summer time cooling.
•Ideally suited for Homes, Offices, Schools, Gyms, Warehouses, Stores or Backyards
•Powerful motor with 5 Speed Control Makes this Ceiling Fan Functional for Many Places.
*Warranty cover?
This warranty covers any defect in manufacturing or defect caused by normal use. This warranty extends to the original end user purchaser, only.
*What does this warranty not cover?
This warranty does not cover defects caused by improper use or abuse.HD makes no other warranties, express, implied or otherwise. In no event HD will be liable for indirect, special, incidental or consequential damages for the breach of any warranty, including economic loss, damage to property, and, to the extent permitted by law, damages for personal injury. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation may not apply to you.