A refrigerator that is opened frequently, common in households with children or in shared office kitchens, allows more warm, humid air to enter with each opening, increasing compressor workload and, over time, the likelihood of condensation-related issues around the door seal area compared to a less frequently accessed unit. Washing machines used for consistently heavy or bulky loads face more mechanical stress on the drum bearing and suspension system than those used mainly for lighter loads, suggesting a shorter interval for checking these specific components even if other aspects of the machine show no obvious wear.