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AIR CONDITIONING FILTER, BEFORE AND AFTER USE
Air conditioning filters. Comparison of two filters from an air conditioner. The white filter has never been used, and the dark one is after use in a working air conditioner. Air conditioners pass air through filters to clean it before cooling. This filters out pollutants and dust. Air conditioning filters need to be regularly replaced. (KEYSTONE/SCIENCE PHOTO LIBRARY/ALEX BARTEL)
Instructions
COPYRIGHTPFLICHTIG
License
Rights Managed
Date created
19971022
Place
Credit
KEYSTONE
Source
SCIENCE PHOTO LIBRARY SPL
Byline
ALEX BARTEL
Size
5047 x 4013 px
File type
JPEG