Decision calculator
Repair the appliance or replace it?
Compare the cost per expected useful year. The key question is not just how old the appliance is—it is how much useful life the repair is likely to buy.
Do not treat a lifespan estimate as a promise.
Repair quality, prior failures, parts availability, model complexity, and how heavily you use the appliance can change the result.
Visible assumptions
The expected life after repair is explicit instead of hidden inside a rule of thumb.
Checkable math
Each path is shown as cost per expected useful year, including operating cost.
No fake precision
If the annualized costs are close, reliability, downtime, and convenience may matter more.