Preventing Global Warming through the Proper Use of Energy
Air conditioners use a lot of electricity to carry out cooling and heating. To produce this electricity, power plants burn fuel and generate CO2, one of the causes of global warming.
What's the Relationship Between Air Conditioners and CO2 Generation?
Air conditioners use a lot of electricity. Of the energy consumed in the average home, air conditioners account for about 25.2% *, more than TVs or refrigerators. This alone shows the amount of CO2 emissions during air conditioner use. That's why it's important to buy an energy-efficient air conditioner and to avoid wasting electricity by doing things like setting the cooling temperature as high as possible and the heating temperature as low as possible, as well as regularly cleaning the air conditioner filter.
* For homes in Japan.

Source: Overview of Electric Power Supply and Demand(2004)
CO2 emitted by a room air conditioner from manufacture to final disposal
| During manufacture of materials and parts |
126kg-CO2 |
| During manufacture of air conditioner |
22kg-CO2 |
| During transport |
7kg-CO2 |
| During air conditioner use |
3,586kg-CO2 |
| During disposal and recycling |
10kg-CO2 |
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(Daikin calculations) |
| You can see that most of the CO2 emission occurs during air conditioner use. |
APF: The Energy Efficiency Standard to Shoot For
To reduce CO2 emissions during air conditioner use, we have to develop and promote the use of energy-efficient products. To show how successful we have been in this endeavor, our catalogues carry the symbol below, which shows target values of annual performance factor (APF) and what percentage of each product line have reached the targets of Japan's Energy Conservation Law.
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| These figures are for air conditioner models for the target year 2010 under the Energy Conservation Law. The symbol is color coded: it is green if the product reaches the energy-efficiency targets and orange if the product does not reach the targets. |
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