Key points
- Compare equivalent service over a shared time horizon.
- Separate confirmed costs, estimates and missing information.
- Test what would change the decision before committing funds.
Define the decision and its constraints
Describe the asset, the service required and the consequence of losing it. The technical lead establishes whether repair is feasible and what reservations remain. Management sets the comparison period and decision budget. Equipment judged unsuitable for use by the competent person must not remain in operation merely to improve an economic calculation.
Separate disqualifying constraints from preferences. Compatibility, site access, parts availability and return-to-service requirements may rule out an option. Ease of use or consistency across the equipment fleet can then help distinguish viable alternatives. Reliability history and MTBF in hospitality provide context, but cannot replace an assessment of the specific asset.
Request comparable information
Ask suppliers the same questions about scope, labour, travel, accessories, installation, proposed lead time, warranty and exclusions. Check what each price actually includes. Purchasing retains quotation versions, engineering explains technical assumptions and operations confirms availability constraints. Mark uncertain information as such instead of presenting an unsupported amount as a confirmed cost.
DOE describes life-cycle costs beyond the initial purchase price. The method proposed here adds future costs for each option over a shared period. Previous spending remains useful historical information, but should not be added to the future choice when it is unchanged by either option. Finance can advise on the treatment needed for larger investment decisions.
Work through a twenty-four-month example
This entirely fictional example uses euros excluding tax for a service appliance. Both options meet the same need for twenty-four months. It is a simple undiscounted comparison, not a quotation or a forecast return on investment. Residual value is set to zero for both scenarios because no documented estimate is available.
| Cost over 24 months | Repair | Replace |
|---|---|---|
| Repair or installed purchase | €600 | €1,800 |
| Planned servicing | €300 | €160 |
| Estimated energy | €960 | €720 |
| Temporary cover during downtime | €160 | €80 |
| Removal of old appliance | €0 | €60 |
| Total future cost compared | €2,020 | €2,820 |
Repair is €800 cheaper over this period: €2,820 minus €2,020. The result depends on the assumptions. If another incident adds a €500 repair and €320 of temporary cover, the repair option reaches €2,840, which is €20 more than replacement. This sensitivity scenario does not assign a probability to that additional failure; it shows which uncertainty could change the decision.
Review unknowns and prevent double counting
An unavailable room does not automatically cost its published rate multiplied by the number of nights. Operations and finance need to agree the measure: actual relocation spending, supported lost contribution or unquantified commercial exposure. If the effect cannot be estimated credibly, show it separately. Do not count the same consequence under both downtime and guest compensation.
Expected remaining service life is a technical estimate, not the commercial warranty. Ask the professional what supports the estimate and what the assessment cannot establish. If replacement is expected to last beyond the comparison period, test a supported residual value or a longer horizon shared by both options. Do not assign a convenient residual benefit to only one alternative without explaining the basis.
Record a conditional, reviewable decision
Keep the decision note concise: proposed option, period, compared costs, constraints, unknowns and the trigger for a further review. For example: “repair selected subject to confirmed parts availability and scope; reassess if the quotation or timing changes”. Management approves the choice and purchasing records the selected order. A supplier quotation does not itself establish internal purchasing authority.
After completion, compare actual cost, observed downtime and remaining reservations with the initial case. Close the decision when the asset has been received, its status confirmed and the required documents supplied. An incomplete economic case may justify temporary continuity arrangements, but keep that exception visible and give it an explicit review date and owner.
Frequently asked questions
Is there a universal repair percentage that triggers replacement?
Not in this framework. A repair-to-new-price ratio may flag a case for review, but ignores useful life, installation constraints, lead time and the actual service delivered.
Should all previous repair costs be added?
Keep them as historical evidence. To compare choices from today, use future costs that differ between options. Ask finance to confirm the appropriate treatment for significant investments.
