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All of the Ten Most Useless Energy-Related Products can be found on Green Building Advisor's Web site, but here are a few worth noting:

The most controversial? The programmable thermostat. According to the author, simply installing a programmable thermostat makes no difference in energy use. One's own behavior — like your views about energy, and whether or not you even know how to use a thermostat correctly! — is a far more important factor.

Others worth noting:

• DuPont's Tyvek ThermaWrap, which only changes an R-value of an air space from R-1 to R-2.
  
• Powered attic ventilators, which more often than not draw conditioned indoor air into the attic through leaky ceilings.
  
• Inexpensive LED lamps, which are actually less efficient than CFL lamps. Higher quality LED lamps are more efficient and match that of CFL's.

Check out the rest of the list at Green Building Advisor.

Photos and original article via Green Building Advisor.

Originally posted at Re-Nest/Trent Johnson.