Major Home Appliances

Material Composition Assumptions

The default bill of materials for a representative major home appliance (approximately 65 kg blended average across refrigerators and washing machines) includes:

• Steel (body, drum, inner tank): Cold-rolled and hot-rolled steel sheet, galvanised steel tub — approximately 38 kg (58%)
• Compressor or motor assembly: Cast iron housing, copper motor windings, aluminium rotor — approximately 8 kg (12%)
• Refrigerant (refrigerators): HFC-134a or R-600a isobutane charge — approximately 0.1-0.2 kg; leakage over product life is a significant S1 driver due to high GWP of HFC-134a (GWP 1,430)
• Insulation foam: Polyurethane foam blown with cyclopentane or HFO agents — approximately 4 kg (6%)
• Plastics (liners, door seals, drawer components): Polypropylene and ABS — approximately 5 kg (8%)
• Electronics and controls: PCB, temperature sensors, digital display, wiring harness — approximately 1 kg (2%)
• Copper (wiring, heat exchanger tubing): Approximately 2 kg (3%)
• Other (glass shelves, rubber seals, hardware): Approximately 7 kg (11%)

Steel production is the single largest material contributor by mass. The compressor is the most energy-intensive sub-assembly due to precision motor winding and hermetic sealing processes. Refrigerant choice materially affects Scope 1: R-600a (isobutane) has a GWP of only 3 compared to 1,430 for HFC-134a, making appliances using hydrocarbon refrigerants significantly lower in lifecycle Scope 1 emissions.

Manufacturing Geography

The default manufacturing region is China with significant production in South Korea, EU (Germany, Poland, Italy), and USA.

• Grid intensity: ~565 gCO2e/kWh (China average) is used as the default. EU manufacturing would use ~300 gCO2e/kWh; US manufacturing ~390 gCO2e/kWh.
• Rationale: China manufactures the majority of global appliance volume (Haier, Midea, Hisense, and contract manufacturing for Western brands). South Korean production (Samsung, LG) accounts for a substantial premium segment share. European-market appliances increasingly shift production to Poland and Turkey, with lower grid intensities than China but still fossil-heavy.
• Steel sourcing: The majority of appliance steel is sourced from integrated blast-furnace mills in China and South Korea, with high embedded carbon per tonne (~2.0 tCO2e/t). European electric arc furnace (EAF) steel offers a pathway to ~0.4-0.6 tCO2e/t, which can reduce the total score by up to 20% if fully verified.

Regional Variation

Manufacturing Region	Grid Intensity	Estimated Score Adjustment
China (default)	~565 gCO2e/kWh	Baseline (0%)
EU average (Poland/Germany)	~300 gCO2e/kWh	-15% on Scope 2 (saves ~11 kgCO2e)
USA average	~390 gCO2e/kWh	-10% on Scope 2 (saves ~7 kgCO2e)
South Korea	~450 gCO2e/kWh	-7% on Scope 2 (saves ~5 kgCO2e)
Nordic (Sweden/Norway)	~30 gCO2e/kWh	-47% on Scope 2 (saves ~36 kgCO2e)

Note: Scope 2 represents approximately 25% of the total footprint. Regional variation in grid intensity has a moderate effect on total score. Refrigerant choice (Scope 1) and steel sourcing (Scope 3) are often more impactful levers.

Provenance Override Guidance

A supplier or manufacturer may override the default CCI score by submitting:

1. Environmental Product Declaration (EPD) per ISO 14025 or an equivalent verified Product Carbon Footprint per ISO 14067, covering at minimum cradle-to-gate emissions.
2. Refrigerant specification and charge weight with confirmed GWP value, enabling a precise Scope 1 recalculation to replace the default HFC-134a assumption.
3. Steel mill certificates specifying electric arc furnace (EAF) origin or certified low-carbon steel (e.g., SSAB Fossil-free, Tata Steel ZeroCarbon) with associated emission factors.
4. Factory energy data including grid connection region, renewable energy certificates (RECs), or power purchase agreements (PPAs).
5. Insulation blowing agent specification: HFO or cyclopentane-blown foam has materially lower GWP than legacy HCFC blowing agents.

BSH, Electrolux, and Whirlpool all publish product-level environmental reports that qualify as valid provenance overrides if third-party verified.

Methodology Notes

• CCI score of 300 kgCO2e is a conservative central estimate for a blended major appliance unit (refrigerator/washing machine average at ~65 kg). Published LCAs for individual models range from ~150 kgCO2e (small, efficient European-market units) to ~500+ kgCO2e (large US-market French-door refrigerators).
• Scope breakdown: Scope 3 dominates at ~60% (180 kgCO2e) from upstream materials and component manufacturing. Scope 2 (factory electricity) is ~25% (75 kgCO2e). Scope 1 (~15%, 45 kgCO2e) is elevated versus most product categories due to HFC refrigerant leakage; this drops substantially for R-600a appliances.
• Functional unit: One major home appliance, cradle-to-gate (manufacturing and transport). Use-phase electricity consumption is a significant but separate lifecycle stage and is not included in the CCI score.
• HFC leakage assumption: The default Scope 1 assumes an HFC-134a appliance with a 0.03 kg charge and a 15% leakage rate over product life (GWP 1,430), yielding ~6.4 kgCO2e from refrigerant alone. Appliances using R-600a reduce this to under 0.1 kgCO2e.
• Data gaps: Precise compressor manufacturing emission factors vary significantly by manufacturer and automation level. Washing machine motor and bearing manufacturing are estimated using generic electric motor LCI data.
• Blended average caveat: The score blends refrigerators and washing machines, which have meaningfully different profiles (refrigerators carry more refrigerant/insulation impact; washing machines carry more motor/drum/control impact). Category-specific scores should be used where product type is known.