Lift refurbishment vs lift replacement – Which is the more sustainable option?

For many existing buildings, refurbishing a lift can reduce material use, cost and disruption compared with full replacement. The right decision depends on the condition of the existing equipment, accessibility requirements and the building’s physical constraints. Within the vertical transportation sector, this principle is particularly relevant due to the high embodied carbon, material intensity, and operational impact associated with lift systems.

For building owners, developers and asset managers, this article explains when lift refurbishment can offer a lower-impact alternative to replacement, and when a new installation remains necessary. The analysis demonstrates that refurbishment is often the more sustainable, cost effective, and operationally efficient solution, especially in constrained or heritage environments.

The following table presents the component weights for 6 floor, 7 floor, and 11 floor lift installations. All figures are taken from actual project data, sourced directly from shipment delivery lists provided by the lift manufacturers during previously completed installations. These values therefore represent real world, as installed equipment weights, rather than theoretical or catalogue estimates.

This dataset forms the basis for assessing material retention and steelwork savings achievable through refurbishment.  In the three installations assessed, retaining the guide rails produced calculated steelwork savings of approximately 16%, 25% and 29% respectively.

The data: Lift component weights

Introduction
For many existing buildings, refurbishing a lift can reduce material use, cost and disruption compared with full replacement. The right decision depends on the condition of the existing equipment, accessibility requirements and the building’s physical constraints. Within the vertical transportation sector, this principle is particularly relevant due to the high embodied carbon, material intensity, and operational impact associated with lift systems.

For building owners, developers and asset managers, this article explains when lift refurbishment can offer a lower-impact alternative to replacement, and when a new installation remains necessary. The analysis demonstrates that refurbishment is often the more sustainable, cost effective, and operationally efficient solution, especially in constrained or heritage environments.

The following table presents the component weights for 6 floor, 7 floor, and 11 floor lift installations. All figures are taken from actual project data, sourced directly from shipment delivery lists provided by the lift manufacturers during previously completed installations. These values therefore represent real world, as installed equipment weights, rather than theoretical or catalogue estimates.

This dataset forms the basis for assessing material retention and steelwork savings achievable through refurbishment.  In the three installations assessed, retaining the guide rails produced calculated steelwork savings of approximately 16%, 25% and 29% respectively.

The data: Lift component weights

 Sustainability context in vertical transportation
Lift systems contain significant quantities of steel, copper, and electronic components. Full replacement typically involves:

•    Removal and disposal of the existing lift
•    Manufacture and transport of a complete new system
•    Structural modifications to the building
•    Increased embodied carbon due to new materials

Refurbishment, by contrast, retains major structural components such as guide rails, counterweight frames, and car structures. This aligns with circular economy principles by prioritising reuse over replacement, reducing waste, and lowering carbon emissions.

Comparative analysis: Refurbishment vs replacement

Cost efficiency
Refurbishment is typically 20–40% cheaper than full replacement. This cost reduction is achieved by:

• Retaining the existing shaft and structural elements
• Avoiding demolition and disposal costs
• Minimising building infrastructure upgrades (e.g., power supply, shaft modifications)

Full replacement often triggers additional expenditure due to compliance with modern installation standards and the need for structural alterations.

 Programme and downtime
Refurbishment offers significantly shorter programme durations:

• Refurbishment: typically completed within 2-3 weeks less than replacement
• Replacement: often requires longer on site due to structural works and commissioning

Reduced downtime is critical in:

• Residential buildings
• Healthcare facilities
• High traffic commercial environments

Minimising lift unavailability directly improves building usability and occupant satisfaction.

 Compliance and standards
Refurbishment can upgrade older lifts to meet new key safety and accessibility requirements and regulation in many existing buildings, including:

• EN 81 series
• UK Equality Act
• Evacuation and emergency standards

Importantly, refurbishment does not always trigger the full suite of “new installation” requirements, which can be more stringent and costly. This provides a practical route to compliance without extensive building modifications.

Building fabric and heritage considerations
In many existing or heritage buildings, the lift shaft dimensions, door openings, and structural constraints do not accommodate modern lift packages without major alterations.
Refurbishment enables modernisation within the existing physical envelope, avoiding:

• Structural demolition
• Enlargement of shafts
• Alteration of protected architectural features

This approach preserves building integrity while improving performance.

Environmental impact assessment
Real project data demonstrates that retaining major lift components yields substantial material and carbon savings. In one documented case, reusing the guide rails and counterweight frame resulted in a minimum of 16% steelwork savings compared to full replacement.
This reduction directly lowers:

• Embodied carbon
• Transport emissions
• Waste generation

Given the high carbon intensity of steel production, even modest material retention has a meaningful environmental benefit.

When refurbishment is the optimal solution
Refurbishment is most appropriate when:

• The lift shaft and structural components remain in good condition
• Issues relate primarily to controls, doors, ride quality, or finishes
• The building cannot accommodate the physical changes required for a modern lift
• Sustainability targets prioritise carbon reduction and material reuse
• Minimising downtime is essential

These conditions are common in existing buildings, but a detailed engineering assessment is needed to determine whether refurbishment is appropriate.

When full replacement is required
Replacement remains the optimum solution when:

• Structural components are severely corroded or damaged
• The shaft is non compliant and cannot be adapted
• The lift car size cannot meet accessibility requirements
• The building is undergoing major redevelopment
• The existing system is beyond economic repair

These cases represent a minority but must be identified through thorough engineering assessment.
Before specifying a replacement, commission a condition and options assessment covering component integrity, accessibility, compliance, programme, cost and embodied carbon. This creates a comparable evidence base for deciding which elements can be retained.

Conclusion
Based on engineering analysis and real project data, lift refurbishment is often the more sustainable, cost effective, and operationally efficient solution for existing buildings. It reduces embodied carbon, preserves building fabric, minimises downtime, and provides a practical route to compliance.
Full replacement should be reserved for cases where structural or regulatory constraints make refurbishment unviable.
Sustainable engineering requires making informed decisions that balance performance, cost, and environmental impact. In the context of vertical transportation, refurbishment aligns strongly with these principles and should be considered the default option wherever feasible.