iMac (21.5 inch)

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iMac (21.5 inch)
Carbon Footprint
GHG Emissions Facts
Per device (MK452)
Total:630 kg CO₂e
630,000 gCO₂e
 Production:347 kg CO₂e
347,000 gCO₂e
 Distribution:38 kg CO₂e
38,000 gCO₂e
 Usage:227 kg CO₂e
227,000 gCO₂e
 End of Life:19 kg CO₂e
19,000 gCO₂e
Carbon Budget
Per person annual emissions
Material Use
glasscircuit boards
power supplyspeakers
plastichard drive
Source: Apple Inc.[1]

The iMac (21.5 inch) is an all-in-one desktop computer designed, developed, and marketed by Apple Inc. This article is an overview of the environmental impact of the device throughout its life cycle. Unless otherwise specified, data on this page refers to version MK452 of the device. The device has life cycle greenhouse gas (GHG) emissions of 630 kg carbon dioxide equivalent (CO2e).[1]

The principal source of information for this article is an environmental report published by Apple Inc.[1] Third-party verification of carbon emissions associated with company operations was obtained by Apple from Bureau Veritas, and calculations of downstream emissions related to the product were checked for quality and accuracy by the Fraunhofer Institute in Germany.[2]


The device is composed of aluminum/steel (2360 g), display (1490 g), glass (555 g), circuit boards (310 g), power supply (290 g), speakers (262 g), plastic (213 g), hard drive (100 g), and other materials (100 g). GHG emission information specific to materials was not available. The manufacturer states that the devices comply with the Restriction of Hazardous Substances Directive (RoHS). This directive limits the amount of lead, mercury, cadmium, hexavalent chromium, and brominated flame retardants PBB and PBDE that can be present in the product. Emissions information specific to materials is included in the production data..[1]


Production of a device is responsible for 347 kg CO2e of GHG emissions or 55% of total life cycle emissions. This includes the extraction, production, and transport of raw materials for the device and product packaging.[1]


GHG emission information specific to packaging was not available. The retail box is composed of paper (1753 g), expanded polystyrene (431 g), polypropylene film and fabric (60 g), and other plastics (23 g). The shipping box has an additional 1,113 grams of paper.[1]


Distribution of the product is responsible for 38 kg CO2e of GHG emissions or 6% of total life cycle emissions. Apple has included, in these measurements, air and sea transport from the manufacturing site to regional distribution hubs and from the distribution hubs to the end consumer.[1]


Use of the device is responsible for 227 kg CO2e of GHG emissions or 36% of total life cycle emissions. This is based on four years of electricity usage.[1]

End of Life

The service life of the device is estimated to be four years. Disposal of the device is responsible for 19 kg CO2e of GHG emissions or 3% of total life cycle emissions. Apple Inc. offers recycling programs in 99% of countries where the products are sold..[1]

See also[edit]

  • Apple Inc - comparison of Apple Inc product environmental impacts


  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 21.5-inch iMac and 21.5-inch iMac with Retina 4K Display Environmental Report. Apple Inc, 13 Oct 2015. Web. 10 Jan. 2017. Archived
  2. "More answers to your questions about Apple and the environment.". Apple. Accessed January 4 2017. Archived