From Earth Month Challenge: 30 Easy Actions:  

Here’s another action that many are already doing. It reminds me of the energy crisis of the 1970s. Yeah, I was around then, people. I’m old enough to know better. Suggested action for April 4 is this lower the thermostat (while the heat is on) by one degree. One simple degree Fahrenheit, folks. It’s an almost undetectable difference for us humans, but it makes a significant difference in the amount of fuel used to heat an entire home.

Heck, if you’re lucky enough to have a programmable or Smart thermostat, set it to a lower temperature when you’re gone to work and turn it up just before you arrive home. Make sense? Of course it does. It made sense in the 1970s, too.

Stay tuned for more eco-friendly actions throughout April – or go to Treehugger yourself!