Nate Core Practice Test 2025 – 400 Free Practice Questions to Pass the Exam

In HVAC systems, increased energy efficiency is typically achieved through practices and components that promote optimal performance and minimize energy waste. Regular maintenance checks ensure that the system operates correctly, helps identify issues early, and can lead to improved efficiency. Using energy-efficient appliances reduces energy consumption and often results in lower utility bills. Proper insulation is crucial as it helps maintain the desired temperature within a building, reducing the load on HVAC systems and allowing them to use energy more effectively.

In contrast, dirty filters reduce airflow and efficiency, leading to the HVAC system working harder to maintain the desired temperature. When filters are clogged or dirty, the system may run longer and consume more energy, thus promoting inefficiency rather than improved energy efficiency. So, the presence of dirty filters is not associated with increased energy efficiency in HVAC systems.