Saving Energy Around the Home, Separating Energy Efficiency Myths From the Facts

Background
Turn Off Lights
Compact Fluorescent Lightbulbs
Warming Up The Car
Turn Down The Thermostat
Heating and Air-Conditioning Maintenance
Choose the Right Equipment and Contractor
Check Appliance Efficiency
Turn Computers Off
Energy Efficient Windows
Walls Beat Windows

Background

The average person today is inundated with messages about saving energy. Unfortunately too many messages perpetuate long-standing myths, making it difficult to sort out good advice from bad. ACEEE has compiled a list of tips below to help separate energy savings fact from energy wasting fiction.

Turn Off Lights

Turning off lights, even for short periods of time, really saves energy, with little impact on the lifespan of the bulb. Turn off the lights even when you’re leaving a room for just a few minutes.

Compact Fluorescent Lightbulbs

Today's compact fluorescent lightbulbs work just as well as incandescents, and are just as safe. CFLs have come a long way in terms of quality and variety, and use a fraction of the energy of incandescent bulbs. Look for the ENERGY STAR label to ensure high quality bulbs, and try out different color varieties to find the one you like best (“soft white” most closely mimics the color of an incandescent). As for safety, even if a bulb breaks in your house authorities suggest that there is not enough mercury in the bulb to present a substantial health hazard. That being said, efforts should be taken to dispose of CFLs properly.

Warming Up The Car

Don't spend time warming up the car when it’s cold outside. While it is best to avoid stressing the car while the engine is cold, simply drive a bit more “gently” for the first few minutes. Also, idling a modern car always wastes more energy than turning it off (even for short periods of time).

Turn Down The Thermostat

Turn down the thermostat while you’re away from the house for the day. If you are out for a good stretch of time (say 8 hours or so), this temperature "set-back" will save more energy than it will take to bring your home back to the desired temperature. (Note: If you have a heat pump, make sure you have a heat pump thermostat designed for your heat pump, and that it has been properly programmed.)

Heating and Air-Conditioning Maintenance

Don’t forget the simple maintenance needed to keep your heating and air-conditioning systems running efficiently. Change the air filter regularly (once a month during heating and cooling season) and get a “tune-up” by a contractor every 2 to 3 years.

Choose the Right Equipment and Contractor

While heating and air-conditioning equipment is much more efficient than it used to be, there are still significant variations in energy use. The most important decision is which contractor to choose, so the equipment will be the right size and installed properly, and the ductwork will be fixed so that it doesn’t leak a quarter of the energy you buy (the US average)! Qualified contractors will ask about comfort issues, run a real load calculation program so they won't need to sell oversized equipment, and discuss options with you. Premium equipment offers even better efficiency, and features such as quieter operation and better humidity control.

Check Appliance Efficiency

Refrigerators, clothes washers, and dishwashers on the market today are much more efficient than those available ten or twenty years ago, but there are still significant differences in energy use among models. For example, side-by-side refrigerator/freezers generally use more energy than freezer-on-top models. Features such as icemakers also use extra energy. Most front-loading clothes washers save significant amounts of energy and water compared to conventional top-loading designs. On the other hand, products like stoves vary relatively little in their inherent efficiency.

Turn Computers Off

The best way to save energy for your computer is to turn it off when you’re not using it. The second best way is to set it to automatically go into “sleep” or “hibernate” mode to save energy. Also, make sure the next computer you purchase has an ENERGY STAR label. Contrary to popular belief, using a screensaver saves no energy.

Energy Efficient Windows

Energy-efficient windows save energy, but a window replacement is unlikely to pay for itself in energy savings alone. If you need to replace your windows for other reasons, the premium you’ll pay for high performance windows (ENERGY STAR or better) is generally worth the investment. And like so many other major energy efficiency projects, much of the energy savings depends on the quality of the contractor you hire to do the work. Bad installations can not only leak and cause drafts, but can also lead to major moisture damage.

Walls Beat Windows

While energy-efficient windows are a step in the right direction, walls always outperform windows. Be careful not to choose oversized windows, and take extra steps to increase the performance of windows, such as shading for western- and southern-facing windows.

Source: ACEEE

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