Safety thresholds determine whether your appliance reaches the repair or replacement boundary

https://www.livebinders.com/b/3720236?tabid=3e66ed3e-4cf9-c890-e2fc-6c9d574b1e32

The 50/50 rule measures appliance safety and function against documented thresholds: if repair cost reaches 50 percent of replacement cost and the unit is halfway through its rated lifespan, measured readings show operating limits have degraded