My kids!

The dishwasher. I can do dishes by hand, so that is kind of a waste. When considering the energy consumption of a household, home appliances account for a large portion of energy usage. The energy consumption of a typical household includes lighting, cooling and heating, and home appliances. While the total energy consumption of home appliances is typically less than lighting and temperature control in a year’s time, many household appliances use a significant amount of energy. The two most energy-consuming home appliances are the refrigerator and the clothes dryer. The refrigerator is always on although it consumes the most energy when the compressor cycles on to maintain the proper temperatures. Clothes dryers do not remain on, but when they are in use they consume a lot of energy. Though energy costs and types vary by location and type of dryer, the typical clothes dryer averages $85.00 US Dollars (USD) annually to operate. Other high-energy usage household appliances include ovens, microwaves, water heaters, automatic dishwashers and stove tops. Generally, the home appliances that are used to create heat (or in the refrigerator’s case remove heat) use the most energy. Smaller home appliances including coffee pots, toasters, and fans consume less energy overall, but the actual usage of any appliance depends greatly on its frequency of use. You can reduce the energy usage of home appliances by using them wisely and by replacing older, out of date models with newer, energy efficient models. Because heating and cooling is a huge source of energy consumption, replacing an inefficient furnace or air conditioning unit will save the most energy and money. When purchasing new home appliances, you can compare their energy efficiency by checking the yellow tag that displays the appliance’s energy rating. Using your home appliances wisely can also reduce energy consumption. Avoid leaving appliances turned on that are not in use and avoid running home appliances like washing machines, dryers, and dishwashers until they contain a full load. Remember that home appliances such as your dishwasher and washing machine combine several sources of energy. Utilize the energy saving features of many newer models by washing in cold water or selecting the “no-heat” drying cycle on your dishwasher. You can also reduce the energy consumption of your oven by foregoing pre-heating when baking. http://www.wisegeek.com/which-home-appliances-use-the-most-energy.htm

My washer and dryer, with three kids I am constantly doing laundry.

I have to go along with Nursey's answer :) The kids haven't quite grasped the concept of turning lights off when they leave a room, and they'll frequently leave the doors wide open while the air conditioner (and lately the heat) is running. They also have this habit of standing in front of the open refridgerator, until they decide what snack they'd like...It sometimes takes a while for them to make up their minds..Yeah, they definitely waste a whole lot of energy...Its too bad you can't use all the energy that they have somehow..

i can see a little daylight at the bottom edge of my front door ha!

Hey jay baby!! definitely the lights., i switch them on all over the house whenever it gets dark, the lamp in the bedroom (nobody goes in there before 11pm) the lamp at the bottom of the stair, the kitchen lights under the units, the bathroom light (just incase the kids wake up).. its crazy, my house is like Blackpool Illuminations!

Can I include my hair curlers here ?! That's the biggest waste ,as some days I want it all curled up ...and my hair is the only thing that won't listen to me . Well ...there are other things too :)

my cats ~ theyre a bunch of lazy, shiftless mofos and they eat too much for their own good. actually in all seriousness, because i am building my home with energy efficiency as a top priority (high r-factor insulation, nasa radiant barrier technology, energy efficient windows, etc.) id say the biggest waste would be the hvac system/appliances. i mitigated the energy waste by replacing all of them with energy star high energy-efficiency appliances & hvac unit and getting an hvac system with a high seer rating also. i minimize energy waste by turning off my appliances when not in use (except for the fridge of course). i also use smart strips that automatically switches off appliances when not in use so they dont drain power while in idle mode. but theyre still huge power suckers. i try to minimize usage whenever possible and keep the temperatures comfortably high in the summer and low in the winter.