| 1 | Product suitability | Whether the proposed elevator type and configuration suit the home, number of floors, intended users, and installation conditions. | Model-specific proposal, layout drawings, and a site-survey report. | Prefer a documented assessment based on the actual building rather than a generic quotation. |
| 2 | Rated load and car dimensions | Rated load, car size, door opening, and permitted passenger capacity for the selected model. | Technical data sheet and approved configuration drawings. | Check that dimensions and capacity match household needs and the available space; do not rely on estimates alone. |
| 3 | Building and civil-work requirements | Required shaft or enclosure, pit depth, overhead clearance, floor openings, and any structural or electrical work. | Dimensioned installation drawings and a written scope of site preparation. | Confirm feasibility with the building professional and clarify which party is responsible for each item. |
| 4 | Drive and operating performance | Drive type, rated speed, ride comfort, noise information, and performance under the proposed operating conditions. | Model specifications, test information where available, and a demonstration of a comparable installation. | Compare like-for-like models and ask how performance figures were measured. |
| 5 | Safety and regulatory compliance | Applicable safety requirements, protective devices, inspection obligations, and local installation rules. | Relevant conformity and inspection documents for the exact model and destination. | Verify applicable requirements with the relevant local authority or qualified inspection professional. |
| 6 | Emergency and power-failure provisions | Available alarm, communication, emergency lighting, and rescue or evacuation procedures for the selected configuration. | Written description of emergency functions, backup-power options, and user instructions. | Confirm what is included, how it operates during an outage, and who can perform a rescue. |
| 7 | Installation and project management | Installation scope, estimated schedule, site coordination, commissioning, and handover responsibilities. | Project plan, installation contract, commissioning checklist, and handover documents. | Ensure the contract identifies exclusions, dependencies, and responsibility for delays or additional work. |
| 8 | Warranty and after-sales service | Warranty coverage, exclusions, response arrangements, maintenance options, and availability of local service support. | Written warranty terms, service contact details, and a sample maintenance agreement. | Compare coverage and response commitments in writing; clarify travel, labor, and parts charges. |
| 9 | Customization and accessibility | Available door, control, finish, lighting, and accessibility options, subject to technical and regulatory limits. | Options list, finish samples, and confirmation that selected features are included in the quotation. | Prioritize usability and safety; confirm any accessibility requirements with a qualified professional. |
| 10 | Total ownership cost and documentation | Equipment, installation, site work, commissioning, maintenance, and other clearly stated costs over the expected service period. | Itemized quotation, payment milestones, operating guidance, maintenance schedule, and parts information. | Compare complete scopes rather than headline prices, and keep all specifications and commitments in the contract. |