Bathroom Fan Timers. How often have you left the bathroom, only to discover hours later that the fan was still running? Geeesh. Install a timer so you don’t keep the fan running for ever and waste precious electricity. We use the spring based type so we don’t consume electricity through the timer mechanism itself.
Dimmer Light Switches. We use these in our family room, kitchen and bedrooms to allow us to adjust the brightness of the recessed ceiling lights as needed, especially to not keep them on the brightest setting when not needed to reduce their electricity consumption.
Replace Worn Seals on Refrigerators. If your refrigerator’s seal is broken or cracked, then all of that cooled air inside the fridge is escaping, causing your refrigerator to work harder and consume more electricity.