I've been reading about HVAC systems lately, and one thing that keeps coming up is the importance of return air. I get that it helps circulate air, but I’m still a bit confused — does blocking or closing vents in unused rooms really impact how return air works and affect the system’s efficiency? I’ve always thought it could help save energy, but now I’m not so sure. Has anyone tested this in real life or found some reliable info on it?
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I’ve recently had my HVAC system checked and the technician also stressed the importance of proper return airflow. It’s something that often goes unnoticed, but it really plays a critical role in how efficiently the whole system operates. I guess it's not just about heating or cooling — it’s about air balance, which is easy to overlook. Thanks for the insights and resources shared above.