Oregon 30-Hour Real Estate Law Practice Test 2026 – Complete Study Resource

Changing air filters in an apartment complex is classified as preventive maintenance because this activity is performed to prevent future issues and maintain optimal system performance. Preventive maintenance focuses on routine checks and replacements, such as changing air filters, to ensure that the HVAC system functions efficiently and to extend its lifespan. By regularly changing air filters, property managers can prevent potential air quality problems, equipment failures, and increased energy consumption, thus saving money in the long run and providing a healthier environment for residents.

In contrast, reactive maintenance refers to repairs that take place after a problem has occurred, emergency maintenance involves urgent repairs needed to address immediate safety or health hazards, and deferred maintenance refers to necessary repairs or maintenance tasks that are postponed, which could lead to greater issues over time. Understanding these distinctions is critical in property management for maintaining both safety and comfort for residents.