The Baby Brezza One Step sterilizer is a countertop steam appliance often used multiple times a day during an infant feeding stage. Frequent heat cycles and mineral buildup are the main stressors; heating elements and thermostats can fail early if hard water scaling isn't managed.
Lids, hinges, and seals also wear from constant opening and exposure to steam, which can cause leaking or incomplete drying. Repair is usually only worthwhile when it's a simple part (seal, latch, or a replaceable reservoir) and the unit is relatively new; otherwise labor can exceed the value quickly.
Replacement becomes the practical choice if the heater or control board fails, if there's persistent error behavior, or if plastic components have warped from heat. Because this device touches feeding items, reliability and consistent sterilization performance should weigh heavily in the decision-especially if problems recur.