“If you really want to cut back on your energy use, you need to focus on heating and cooling your home,” Vargas says. That’s because these two categories combined account for 46% of your overall electric bill.
While most homeowners can’t afford a complete overhaul of their homes’ heating, ventilating and air-conditioning (HVAC) systems, some changes can increase energy efficiency and include:
- Installing a programmable thermostat, which lets you set temperatures for specific times of day. These devices can save about $180 each year on energy costs.
- Change air filters regularly. The harder your HVAC unit has to work, the more energy it eats away. Filters should really be changed monthly, especially during the summer and winter months when the HVAC unit has a heavy workload. If you find this tedious, EnergyStar suggests changing filters a minimum of every three months.
- Seal your heating and cooling ducts, especially those running through the attic, crawlspace, unheated basement or garage, as that improves the efficiency of your HVAC unit by as much as 20%.
According to EnergyStar, your water heating system accounts for 14% of your energy bill. Monetarily speaking, the average household spends $400-$600 per year on water heating. To reduce this expense, lower standby losses, such as heat that escapes the water heater and seeps into the surrounding basement area, as well as the amount of hot water you use in your home.
When set too high, or at 140 degrees Fahrenheit, your water heater can waste anywhere from $36 to $61 annually in standby heat losses, and more than $400 thanks to overall consumption. Lower that expense by bringing the heater’s thermostat to 120 degrees Fahrenheit or below.
- Lights Out -- In EnergyStar’s breakdown, lighting accounts for 12% of the bill, but it also represents one of the easiest fixes. In fact, by simply replacing five of your standard incandescent light bulbs with compact fluorescent light bulbs, you can save $70 a year.
- Hot Stuff -- Appliances only account for 13% of electric bills, so naturally, most people don’t upgrade to an energy efficient toaster. Still, if you are committed to reducing the amount of energy you use, you need to focus on larger appliances that use a heat coil, such as a refrigerator or washer and dryer. To do that, make sure that your fridge’s filters are cleaned regularly, and consider using only cold water to wash laundry loads. That can save $30 to $40 each year.
Don’t be too stingy, Vargas says. Replacing a major appliance, like a refrigerator that is 10 to 15 years old, may help you save in the long term as new technology is constantly subject to federal standards that adjust every year.
- Energy Vampires -- Any appliance or device that sucks up energy when it’s plugged in, despite being turned off, is one of these money-draining culprits. According to EnergyStar, this includes most electronic devices, especially those that use some sort of display, like a television, laptop or DVD player.
Slaying energy vampires won’t lower your energy bill significantly — electronics only account for about 4% of the total cost — but it’s important to keep them in mind, as they consume 75% of the electricity used to power home electronics and appliances.
- Powering Down -- The best way to eliminate this phantom menace is not only to turn energy vampires off, but unplug them. This may be easier said than done, but unplugging a laptop in between uses isn’t particularly problematic. However, doing so with your television would require you to wait for the cable to reboot every time you wanted to watch a program.
As an alternative, EnergyStar suggests plugging your television and/or DVD player into a power strip and then turning that off when your television is in stand-by mode. Put your computers on sleep mode, or manually turn off the monitor in between visits, as opposed to utilizing a screen saver, which, contrary to popular belief, does not reduce energy output. Also, make sure you unplug the battery charger of adapter as it continues to draw energy even when the product no longer needs it.
- Put Stand by on Stand by -- The final 11% of your electric bill comprises devices that don’t exactly fit into any particular category. This includes dehumidifiers, external power adapters and video game consoles, which are all considered energy vampires.
An Xbox 360, for example, if left on the draws approximately 1,000 kWh/yr. The PS3 draws 1,300 kWh/yr. According to EnergyStar, these values drop dramatically when users routinely turn the device off after use, lowering annual energy levels down to 110 and 120 kWh/yr, respectively. Since it costs about 12 cents per kWh/yr in the average residential home in the U.S., it costs $120 if to leave your Xbox plugged in for the entire year.
To lower these costs, unplug the devices when you are not playing and only resort to stand-by mode as, well, a stand-by. Energy Star estimates that stand-by power accounts for more than 100 billion kilowatt hours (kWh) of annual U.S. electricity consumption, and $11 billion in annual energy costs.