The Carbon Footprint of Office Furniture


The Evidence Base for Reuse, Refurbishment and Recycling

Introduction

Office furniture carries significant embodied carbon: the emissions locked in during raw material extraction, manufacturing, assembly and transportation. Once a desk or chair has been produced, those emissions are permanent. The only question is whether the product is used once and discarded, or kept in circulation to justify the carbon already spent making it.


This page consolidates data from UK Government conversion factors (DEFRA/DESNZ 2023), peer-reviewed life cycle assessments, Environmental Product Declarations (EPDs) and academic research to present the carbon case for extending the life of office furniture.

Embodied Carbon of New Office Furniture



The following figures are drawn from published EPDs and LCA studies. All values are cradle-to-gate (covering raw material extraction through to finished product at the factory gate, excluding the use phase and end-of-life).

Item Embodied Carbon (kg COâ‚‚e) Source Notes
Office chair (task/swivel) 72-76 Herman Miller EPDs (2016–2020); FIRA (2011) Range reflects different models. Average ~76 kg.
Desk / workstation 91-120 Steelcase LCA (Dietz, 2005); Koleksiyon EPD (2018) Varies by size and material. MFC desks lower; larger systems higher.
Lateral file / storage unit 219 Steelcase LCA (Dietz, 2005) 97% steel by weight. Steel production dominates.
Panel / screen 230 Steelcase LCA (Dietz, 2005) Mixed materials: steel, plastic, fabric. Highest energy consumption (3,730 MJ).
Meeting chair 30-45 Industry estimates; FIRA (2011) Lighter construction, fewer materials.
Sofa (2-3 seat) 80-120 Industry estimates Primarily foam, fabric, timber frame.
Wooden pedestal 23-45 Bisley EPD (2019); FIRA (2011) Weight and material dependent.
Metal filing cabinet 50-60 Industry estimates; FIRA (2011) Powder-coated steel construction.

Sources: Dietz, B.A. (2005) Life Cycle Assessment of Office Furniture Products, University of Michigan CSS05-08; Herman Miller EPDs for Aeron (2016), Cosm (2019), Mirra 2 (2020); Koleksiyon EPD for Lean Desk Systems (2018); Bisley EPD (2019); FIRA (2011) Carbon Footprinting Document.

Carbon Savings from Refurbishment



When furniture is refurbished rather than replaced, the embodied carbon of the original product is preserved. Only the incremental emissions from refurbishment processes are incurred.

Item New (kg CO2e) Refurb (kg COâ‚‚e) % Saved Typical Actions
Office chair 76 8-12 84-89% Reupholstery, gas lift, castors, clean
Desk / workstation 100 15-22 78-85% Resize, powder coat frame, clean top
Meeting table 60-80 8-12 80-90% Clean, minor surface repair
Sofa (2–3 seat) 80-120 10-15 81-92% Deep clean, reupholster if needed
Wooden storage 23-45 8-12 65-78% Deep clean, repair hinges/runners
Metal storage 50-60 12-16 68-80% Clean (90%), powder coat (10%)
Screen / divider 55-230 10-15 82-93% Reupholster fabric, clean frame

Refurbishment emissions are estimated from: reupholstery (~2.5 kg COâ‚‚e), powder coating (~6 kg COâ‚‚e), component replacement (~4 kg per swap), industrial cleaning (~1 kg COâ‚‚e).

What Happens at End of Life: Scope 3 Reporting Reality


This section is critical for anyone using this data in carbon reporting. The UK Government 2023 GHG Conversion Factors align with the GHG Protocol Scope 3 Standard, which changes the way emissions from waste management are accounted for.


Key rule: The company sending waste for recycling does not receive any carbon benefit. Under Scope 3 accounting, emissions from recycling and energy recovery are attributed to the organisation that uses the recycled material or generates energy from the waste. The waste producer only reports collection and transport emissions.


This means:


Reuse/refurbishment: Avoids procurement emissions entirely. This is the only pathway that genuinely reduces your reported Scope 3 footprint.


Recycling: You report only collection/transport (~21 kg COâ‚‚e per tonne for most materials). You get no credit for displacing virgin production.


Landfill: Full landfill emissions are attributed to you. For wood, this is 925 kg COâ‚‚e per tonne. For textiles, 497 kg COâ‚‚e per tonne.



This is why reuse and refurbishment are not just environmentally preferable but reporting-preferable. They are the only routes that reduce your Scope 3 material procurement footprint.

DEFRA 2023 Waste Disposal Factors (per tonne, kg CO₂e)

Material Recycling (closed-loop) Recycling (open-loop) Combustion Landfill
Metals (construction) 0.98 0.98 - 1.26
Metals (scrap) 21.28 21.28 21.28 8.88
Plastics (average) 21.28 21.28 21.28 8.88
Wood (construction) 21.28 - 21.28 925.24
Textiles/clothing 21.28 - 21.28 496.68

Source: DEFRA/DESNZ 2023 GHG Conversion Factors for Company Reporting, Waste Disposal worksheet. These factors cover collection and transport to treatment point only (except landfill, which includes gate-to-grave emissions).

DEFRA 2023 Waste Disposal Factors (per tonne, kg CO₂e)

These show what your organisation reports when procuring new materials:

Material (Primary Production) kg COâ‚‚e per tonne
Construction metals 4,005
Aluminium 9,109
Steel cans 3,087
Construction wood 313
Insulation 1,862
Plastics (average) 3,336

Source: DEFRA/DESNZ 2023 GHG Conversion Factors, Material Use worksheet.

When you reuse a 30 kg steel filing cabinet instead of buying new, you avoid reporting approximately 120 kg COâ‚‚e in material procurement (30 kg x 4,005 kg/tonne). That is the genuine Scope 3 saving.

UK Market Data: Office Furniture Reuse


According to WRAP (2011), approximately 295,000 office chairs (3,500 tonnes) are reused in the UK every year. This represents 14% of all office chairs reaching end of life annually, saving over 35 kg COâ‚‚e per chair reused. Businesses and households benefit by more than £6 million per year through second-hand chair sales and avoided new purchases.


The Reuse Network coordinates over 400 organisations for furniture and appliance reuse across the UK. Platforms such as Globechain, Warpit and Reyooz connect businesses with surplus furniture to those who need it.


Remanufacturing in the UK is valued at £2.4 billion, with potential to grow to £5.6 billion (Chapman et al., 2010; APPSGR, 2014).


Carbon Savings Certificates


Every Coggin SOS project involving reuse, refurbishment or recycling comes with a Carbon Savings Certificate. Each certificate includes total carbon saved (kg COâ‚‚e), breakdown by product and material type, methodology reference and tangible impact equivalents.


Equivalency metric: 1 kg COâ‚‚e saved = approximately 4 miles not driven, based on a UK fleet-average vehicle emission of 0.28 kg COâ‚‚e per mile (DEFRA 2023 GHG Conversion Factors).


Methodology and Transparency


All embodied carbon values use cradle-to-gate accounting (raw material extraction through to finished product).


Refurbishment emissions are calculated from measured energy and material inputs for each process. Waste disposal and material use factors are taken directly from DEFRA/DESNZ 2023 GHG Conversion Factors for Company Reporting. Where multiple sources exist for the same product, ranges are provided rather than single-point estimates.


This approach aligns with the GHG Protocol Corporate Value Chain (Scope 3) Accounting and Reporting Standard for waste disposal accounting, and uses cradle-to-gate methodology consistent with PAS 2050 for embodied carbon.


Sources


Dietz, B.A. (2005). Life Cycle Assessment of Office Furniture Products. University of Michigan, Center for Sustainable Systems, CSS05-08.


Casas-Arredondo, M. (2021). Circular economy and office fit-out. PhD thesis, University College London.


DEFRA/DESNZ (2023). UK Government GHG Conversion Factors for Company Reporting.


WRAP (2011). Benefits of Reuse: Case Study: Office Furniture.


Herman Miller EPDs: Aeron Chair (2016), Cosm Chairs (2019), Mirra 2 Chair (2020).


Koleksiyon (2018). EPD: Lean Desk Systems. Registration: S-P-01295.


FIRA (2011). Carbon Footprinting Document.



Chapman, A. et al. (2010). Remanufacturing in the UK. Centre for Remanufacture and Reuse.