My central air- conditioning system doesn't seem to be moving much air. What's the problem?—Laura I., Boise, Idaho Of the things that can contribute to lack of air movement, some are simple enough for ...

When selecting inverter driven systems, the contracting community tends to ignore sizing issues because the popular belief is: The system will run only as necessary — you can’t oversize. Nothing could ...

Our team designed, built, and tested a fan/duct assembly (Figures 1 and 2), to investigate general airflow properties, only to inadvertently discover that HVAC ducts ...