|
Appliances |
Rating |
Special Considerations |
Natural Gas and
Oil Systems
 |
Look for the FTC (Federal Trade Commission)
EnergyGuide label with an AFUE (Annual Fuel Utilization
Efficiency) rating for natural gas- and oil-fired furnaces and
boilers. The AFUE measures the seasonal or annual efficiency.
ENERGY
STAR furnaces have a 90 AFUE or higher. |
Bigger is not always better! Too large a system
costs more and operates inefficiently. Have a professional assess
your needs and recommend the type and size of system you should
purchase. |
Air-Source Heat
Pumps
 |
Look for the
EnergyGuide label that lists the SEER (Seasonal Energy
Efficiency Ratio) and HSPF (Heating Seasonal Performance Factor)
for heat pumps. The SEER measures the energy efficiency during the
cooling season and HSPF measures the efficiency during the heating
season. The
ENERGY
STAR minimum efficiency level is 13 SEER or higher. |
If you live in a cool climate, look for a heat pump
with a high HSPF.
ENERGY
STAR heat pumps are about 20% more efficient than standard
models. Contact a professional for advice on purchasing a heat
pump. |
Central Air
Conditioners
 |
Look for the
EnergyGuide label with a SEER for central air conditioners.
The
ENERGY STAR minimum efficiency level is 13 SEER. |
Air conditioners that bear the
ENERGY
STAR label may be 25% more efficient than standard models.
Contact a professional for advice on sizing a central air system. |
Room Air
Conditioners
 |
Look for the
EnergyGuide label with an EER (Energy Efficiency Ratio) for
room air conditioners. The higher the EER, the more efficient the
unit is.
ENERGY STAR units are among the most energy-efficient
products. |
What size to buy?
|
Area in
square feet |
Btu/hour |
Two major factors should guide your purchase: correct size and
energy efficiency. If the room is very sunny, increase
capacity by 10%. If the unit is for a kitchen, increase the
capacity by 4,000 Btu per hour. |
|
100 to 150 |
5,000 |
|
150 to 250 |
6,000 |
|
250 to 350 |
7,000 |
|
350 to 450 |
9,000 |
|
400 to 450 |
10,000 |
|
450 to 550 |
12,000 |
|
550 to 700 |
14,000 |
|
700 to 1,000 |
18,000 |
|
Programmable
Thermostats
 |
For minimum
ENERGY
STAR efficiency, thermostats should have at least two
programs, four temperature settings each, a hold feature that
allows users to temporarily override settings, and the ability to
maintain room temperature within 2°F of desired temperature. |
Look for a the
ENERGY
STAR label and a thermostat that allows you to easily use two
separate programs, one that can be programmed to reach the desired
temperature at a specific time, and a hold feature that
temporarily overrides the setting without deleting the preset
programs. |
Water Heaters
 |
Look for the
EnergyGuide label that tells how much energy the water heater
uses in one year. Also, look for the FHR (first hour rating) of
the water heater, which measures the maximum hot water the heater
will deliver in the first hour of use. |
If you typically need a lot of hot water at once,
the FHR will be important to you. Sizing is important—call your
local utility for advice. |
Windows
 |
Look for the NFRC (National Fenestration Rating
Council) label that provides U-values and SHGC (solar heat gain
coefficient) values. The lower the U-value, the better the
insulation. |
Look at the Climate Region Map on the
ENERGY
STAR label to be sure that the window, door, or skylight you
have selected is appropriate for where you live. |
Refrigerators and
Freezers
 |
Look for the
EnergyGuide label that tells how much electricity, in kWh, the
refrigerator will use in one year. The smaller the number, the
less energy it uses.
ENERGY
STAR refrigerators use at least 15% less energy than required
by federal standards. |
Look for energy-efficient refrigerators and
freezers. Refrigerators with freezers on top are more efficient
than those with freezers on the side. Also look for heavy door
hinges that create a good door seal. |
Dishwashers
 |
Look for the
EnergyGuide label that tells how much electricity, in kWh, the
dishwasher will use in one year. The smaller the number, the less
energy it uses.
ENERGY
STAR dishwashers use at least 25% less energy than required by
federal standards. |
Look for features that will reduce water use, such
as booster heaters and smart controls. Ask how many gallons of
water the dishwasher uses during different cycles. Dishwashers
that use the least amount of water will cost the least to operate. |
Clothes Washers
 |
Look for the
EnergyGuide label that tells how much electricity, in kWh, the
clothes washer will use in one year. The smaller the number, the
less energy is uses.
ENERGY
STAR clothes washers use less than 50% of the energy used by
standard washers. |
Look for the following design features that help
clothes washers cut water usage: water level controls,
"suds-saver" features, spin cycle adjustments, and large capacity.
For double the efficiency, buy an
ENERGY
STAR unit |