When it comes to your heat/Ac, I find it worth the money to have the tech come out once a year and do a check up on the unit. They will clean it out, test everything and do what's needed to get it working at peak efficiency. Also useful to diagnose small problems before they become huge.
Get good filters and keep them clean.
Keep a clean house. You'd be surprised how much dust, dirt and pet hair can make it past even the best filter and get into your heat/ac unit. If you keep things clean, you lessen that.
Clean under and behind the fridge and any chest freezers. Vacuum off or dust the coils. Again, pet hair and dust can really clog things up and drag down the efficiency.
Empty the lint filter on your dryer regularly, and clean out the hose leading outside. Again, not only money saving, but safety related as well since lint can cause fires.
It's not always about turning things off, but it's also about keeping things clean so they work in the most efficient was possible.
That's nice. Gas company here has a minimum $25 charge per month no matter how little gas you use. Always used to make my mom mad when her bill was an even $25 because she was paying for nothing.
We're also going to have to figure out about leaving things plugged in. So if something is plugged in, say a toaster or a coffeepot, but not being used, does it pull power? Or does it use power only when in use? (I've read it both ways.) What about a TV? Does using a power strip help this if you keep it turned off? A little confused about that. (And seems like it would be rather incovenient to have to plug in with each use - I know our main TV is up high, I can't even reach the plug!)
What about cordless phones? Or mobile phone/tablet chargers?
Things like coffee pots and toasters don't pull power unless they have something like a clock or indicator light on them, or something internal to them that "keeps time." This is why things like TV's, game consoles, dvd players, and cable boxes pull power. Even if they don't have a clock on them, most have some internal bit or battery that's keeping track of the date/time and that's constantly drawing power even though you can't see it. Either that or they're in some kind of stand by mode to decrease the amount of "boot time" you experience when turning it on. Cordless phones pull power all the time, I believe. Chargers I'm not sure. I don't believe they use power unless something is plugged into them, but I would unplug them just for safety reasons. (I don't like just leaving stuff plugged into the wall for no reason.)
We're also going to have to figure out about leaving things plugged in. So if something is plugged in, say a toaster or a coffeepot, but not being used, does it pull power? Or does it use power only when in use? (I've read it both ways.) What about a TV? Does using a power strip help this if you keep it turned off? A little confused about that. (And seems like it would be rather incovenient to have to plug in with each use - I know our main TV is up high, I can't even reach the plug!)
What about cordless phones? Or mobile phone/tablet chargers?
I've also wondered about this too. I leave EVERYTHING plugged in 24/7. If it's only going to save me $5/month to run around and plug/unplug cords anytime I need to use something, it's totally not worth it to me.