53 Ways to Conserve Energy
The following tips can help you lower your energy costs and use energy more efficiently. For example, you can achieve significant savings by using fluorescent light bulbs in place of the standard incandescent bulbs. One 18-watt fluorescent bulb will last the same number of hours as ten 75-watt incandescent's, with life-cycle savings of more than $80.00 over the life of the bulb.
Heating Tips
Cooling Tips
Refrigerator & Freezer Tips
Laundry Tips
Hot Water Use
Dishwashers
Cooking Tips
Lighting Tips
New Appliances
Heating Tips
- Heating
is the single biggest energy use in homes. A well-maintained heating
system will hold down fuel costs and provide reliable comfort. Check
the filters in your warm air heating system monthly and replace or
clean them when they become dirty. Have your heating system checked
periodically by a licensed professional.
- Proper insulation in walls, ceilings and floors also significantly reduces the loss of heat to the outdoors. Insulation will pay for itself in fuel cost savings and home comfort.
- Storm windows and doors are big
energy and money savers. They can reduce heating costs by as much as
15% by preventing warm air from escaping to the outside. Double glazed
and thermopane windows or even clear plastic across windows can
minimize heat escape.
- The many small openings in a home can
add up to big heat losses. Caulking and weatherstripping cracks in
walls and floors, windows and doors will save fuel and money. Keeping
the fireplace damper closed tightly when not in use will also result in
heating cost savings.
- Letting sunlight in by opening
curtains, blinds and shades over windows facing the sun helps keep your
home warm and reduces heating needs. At night or when the sky is
overcast, keeping drapes and curtains closed will help keep the warmth
indoors.
- Dry air makes you feel colder than moist air at
the same temperature. Maintaining home humidity will produce personal
comfort at a lower thermostat setting and save money. Shallow pans of
water near radiator tops or near warm air vents, or a room humidifier,
will help raise humidity levels.
- Keeping your heating thermostat at the lowest temperature comfortable for you will save on heating costs.
- Insulate heating hot air ducts and hot water pipes that provide heat to the rooms in your home. This will reduce heat loss in areas that are not insulated and will help your heating system work more efficiently.
Cooling Tips
- Make
sure your air conditioner is the proper size for the area you are
cooling. The wrong size air conditioner will use more electricity and
increase your energy bills. A unit that is too large for a given area
will cool the area too quickly, causing the air conditioner to
frequently turn itself on and off. If a unit shuts off quickly, chances
are it hasn't been running long enough to reduce the room's humidity
and you'll be uncomfortable. If your air conditioner is too small, it
will run constantly on hot days without ever achieving good results.
- The
location of your air conditioner has a lot to do with how efficient it
will be. If you have a choice, locate your units on the north, east or
the best-shaded side of your home. If the unit is exposed to direct
sunlight, it has to work much harder and use more energy to cool your
home. Keep shrubbery away from your air conditioner since it blocks
vents and reduces the unit's ability to exhaust air.
- Regular
maintenance will insure that your air conditioner operates efficiently
throughout the summer. Check the filter once a month by holding it up
to a bright light. If you can't see through it, it's time to clean or
replace the filter. You can also check your owner's guide to find out
how to safely clean the condenser coils and fins on the outside of the
unit.
- On very hot days, you can save energy by closing the
fresh air intake on your unit. Cooling fresh, warm outside air requires
more electricity than re-cooling the air that is already circulating in
your home.
- You can save on cooling costs by avoiding
cooling rooms that are not occupied. If you like your home to be cool
when you come home at the end of the day, special automatic timers for
air conditioners are available that will turn the unit on before you
arrive home.
- On hot summer days, the temperature in your
attic can reach 150 degrees. Improving the ventilation or increasing
the insulation in your attic will lower the temperature of the entire
house and make your air conditioner's job a lot easier. Installing an
attic fan that is controlled by a thermostat to exhaust the hot air or
increasing the insulation factor in your attic can greatly improve the
comfort of your home.
- Depending on the size of your home,
you can save 3% on your cooling costs for every degree you raise your
thermostat in the summer. Raising the thermostat from 73 to 78 degrees
can mean savings of up to 15% in cooling costs.
- Fans can
make your air conditioner's job easier while saving you money. Pedestal
and ceiling fans improve the air circulation in your home, allowing you
to raise the air conditioner's thermostat. In moderate heat, fans can
sometimes completely replace air conditioners. Ceiling fans use only
about one tenth the electricity of a typical home air conditioner.
- To
stay most comfortable during the hottest hours of the day, do your
cooking, laundry and bathing in the early morning or late evenings.
These activities all increase the level of humidity in your home,
making it less comfortable and forcing the air conditioner to work even
harder. If other heat generating appliances, such as irons, ovens and
blow dryers are used only in the early morning or late evening, your
home will stay cooler.
- Drapes, shades and awnings shield windows from the hot sun, keeping your home cooler. Your storm windows also come in handy during the summer since they keep cool air in and hot air out. Weatherstripping and caulking windows and door frames will also keep cool air from leaking out. Certain reflective films can be used on windows to screen out the hot rays of the sun without reducing the amount of light you receive. And, when doors and windows are shut, your air conditioner will operate more efficiently.
Refrigerator & Freezer Tips
- Like
other appliances that heat and cool, refrigerators are big energy
users. If your refrigerator door does not shut tightly, check the door
seal to see if it needs to be cleaned or replaced. A door leak allows
cool air to escape, forcing your refrigerator to use more energy to
keep food cold.
- Cleaning the condenser coils found in the
back or bottom of the refrigerator will maximize its efficiency. A
brush or vacuum can be used. Be sure to unplug the refrigerator before
you start cleaning.
- Keep the refrigerator away from heating
appliances (ovens and dishwashers), windows, and heating ducts. Direct
exposure to heat forces the unit to work harder and use more energy. If
you have a freezer or refrigerator in your garage, remember that the
garage is not cooled and it will run more to keep cool.
- When
purchasing a new refrigerator consider a high efficiency model. Compare
yellow Energy Guide labels and choose the unit that uses the least
amount of electricity.
- A freezer's efficiency is increased
by keeping its compartment full. Be careful not to block the fan that
allows cold air to circulate.
- Although automatic defrost
refrigerators are convenient, their defrosting features use a lot of
electricity. A manual defrost refrigerator typically uses 36% less
energy.
- Check temperature settings for the most efficient appliance operation. Refrigerator temperature should be 36-38 degrees and freezer temperature should be 0-5 degrees.
Laundry Tips
- Ninety
percent of the energy your washer uses goes toward heating water. You
can save energy dollars by using hot water only for heavily soiled
laundry. Most laundry can be washed in warm water and lightly soiled
loads can be washed in cold water. You can also save by using cold
water rinses for each load, because the temperature of the water used
during the rinse cycle will not make your clothes any cleaner.
- Run the washer only when you have a full load of laundry to save energy and water.
- If
you have more than one load of clothes to dry, try to do each load
immediately after the one before to use the heat left over from the
previous cycle and increase the efficiency of the dryer.
- If
you're in the market for a new clothes dryer, consider purchasing one
with a "moisture sensing" device that shuts off automatically when your
clothes are dry so the dryer doesn't run longer than needed.
- You
can reduce drying time and energy use by setting your timer carefully.
Over-drying your clothes uses more energy than necessary, and shortens
the life of the fabric. Other side effects include shrinkage and static
cling.
- Drying heavy and light fabrics separately will also
keep drying time to a minimum. Mixing different weight fabrics causes
the dryer to run longer than necessary.
- Remember to check the lint filter before each load. Lint buildup blocks air flow and lengthens drying time, costing you energy dollars.
Hot Water Use
- The
water heater is the second largest energy consumer in the home and
using it efficiently can add up to big savings. For families with an
automatic dishwasher, the hot water heater setting can safely be
lowered to 130-140 degrees. If the automatic dishwasher has a water
temperature booster, the water heater temperature can be set to 110-120
degrees. If your house will be vacant for two or more days, you can
lower the temperature of your water heater even more until you return.
If you have a new water heater, drain a few gallons from your tank
every six months to remove sediment that accumulates and reduces the
heater's efficiency. If you only use your hot water once or twice a
day, you may consider installing a timer on your hot water heater and
set it up to run two hours in the morning and the evening.
- Wrapping
a fiberglass blanket around your water heater and securing it with duct
tape, or installing a ready-made insulation kit can save up to 10% on
water heating costs. Most new water heaters are already insulated, so
this tip is most effective for heaters that are more than five years
old. Also, insulate hot water pipes to reduce heat loss as the hot
water is flowing to your faucets.
- Leaky faucets can add to
your hot water bill so repair them as soon as possible. The constant
drip wastes water, energy and money. You can also save by installing an
inexpensive "flow control" device in shower heads and faucets.
- It pays to operate appliances that use hot water wisely. Running the clothes washer with a full load and using cold water whenever possible can lead to big energy savings. Use detergents that clean clothes effectively in cold water. Rinsing dishes with cold water before loading them into the dishwasher and running the dishwasher only when it's completely full will also save money.
Dishwashers
- Eighty
percent of the energy used in automatic dishwashers goes toward heating
water. Significant savings take place by running the dishwasher only
when it is full. Running a half-filled dishwasher twice uses two times
as much energy as running a full load once.
- Washing dishes
by hand may not save energy or money. In fact, you can probably save
energy using the dishwasher since hand-washing usually requires more
hot water.
- When shopping for a new dishwasher, look for
models that require less hot water. Dishwashers differ in the number of
gallons of hot water used in the wash cycle. The manufacturer's
specifications or the Energy Guide label should list this information.
- Many
new dishwashers have an internal water heater that raises the
temperature of the incoming water to 140 degrees. This device allows
you to turn down the temperature on the water heater in your home and
still have your dishes washed thoroughly.
- Take advantage of the energy saving control on many dishwashers. It turns off the heat during the drying cycle. Opening the dishwasher after the rinse cycle and letting the dishes air dry is another way to save energy.
Cooking Tips
- A
microwave oven is an energy efficient alternative to a conventional
oven. It cooks food more quickly and it uses 70-80% less electricity
than a regular oven.
- When you're cooking on top of the
range, use pots and pans that are properly sized to "fit" the burners.
Using a small pan on a large burner wastes energy and can be a safety
hazard. Cookware with flat bottoms and tight covers are your best
choice. Always cook with lids on your pans, as this keeps the heat
inside and speeds up cooking time.
- If you do use a
conventional oven, try to avoid "peeking" by opening the oven door.
Each "peek" can lower the oven temperature by 25 degrees. Use a toaster
oven to cook small items.
- Although often recommended, it's
not really necessary to preheat the oven for foods with a cooking time
of over one hour. Using glass pans allows you to set the oven 25
degrees lower because glass retains heat.
- When preparing a meal in your oven, try to use foods that are cooked at about the same temperature. That way your oven can cook several dishes at the same time.
Lighting Tips
- Lighting
accounts for about 15% of a home's electric use. New screw-in
fluorescent bulbs can replace the incandescent ones most of us use.
Fluorescent bulbs are more expensive, but they last 10 times longer and
use 75% less electricity.
- If you prefer incandescent bulbs,
try to use "energy saver" bulbs. These bulbs use halogen gases that allow the filament to burn brighter while consuming less electricity.
- A
lot of energy can be saved by matching as closely as possible light
bulb wattage to lighting needs. For example, a high wattage reading
light in a hallway or alcove is not energy efficient.
- You can save by turning off incandescent lights when you leave the room. If you use fluorescent lighting, however, turn them off only if you'll be gone longer than 15 minutes. Fluorescent lights use as much energy in starting as they use during 15 minutes of operation, so it's not
worthwhile to turn them off for brief periods.
- Lighting
controls or "timers" can help save energy dollars, too. Timers can be
set to turn lights on or off at predetermined times while photocell
controls are sensitive to light and turn lamps on and off at sundown
and sunrise. Dimmers can vary the level of illumination according to
how much light you may want in a given situation.
- Consider
using task lighting (lighting directed at a specific area) instead of
overhead or general lighting, which may light unused areas of the room.
By limiting lighting only to areas where it is needed, savings in the
cost of bulbs and energy can be made.
- Keeping lights and fixtures clean can improve efficiency as much as 20%. Take advantage of reflected light by keeping portable fixtures as close as possible to light colored walls or other surfaces. These easy steps may reduce the number and wattage of bulbs you need and help you save on your energy bills.

